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    Wyświetlanie 1-42 z 42
    Tytuł:
    Recognition of the flysch substrate using the electrical resistivity tomography (ERT) method to assess the effectiveness of the injection process
    Autorzy:
    Ćwiklik, Michał
    Pasierb, Bernadetta
    Porzucek, Slawomir
    Powiązania:
    https://bibliotekanauki.pl/articles/27310120.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    electrical resistivity tomography ERT
    monitoring
    Carpathian flysch
    injection
    Opis:
    During the construction of a section of the S-7 Lubień – Rabka-Zdrój dual expressway, located in the area of the Carpathian flysch (Carpathian Flysch Belt, South Poland), damage to the embankment was observed, as well as cracks and depressions in the new pavement. An analysis of the geological and engineering conditions in the area of the road section under construction showed the existence of a complex tectonic structure of the flysch formations, a shallow groundwater table, and numerous landslides. In order to stabilize the road substrate, it was decided to carry out injections, and the locations of these injections were initially geotechnically tested. However, due to the high variability of the geological structure, the target method employed was electrical resistivity tomography (ERT), which performed the survey in two stages. In Stage I, the geoelectrical/geochemical structure of the near-surface zone was identified, and the probable causes of road damage were indicated. This stage was completed by performing the stabilization and sealing process of the ground with an injection mixture. In Stage II, studies were carried out to evaluate the effectiveness of the injection process. The ERT method effectively identified the shallow geological structure and, in particular, delineated the zone of strong fractures in the flysch and areas associated with faults. Using the electrical resistivity tomography method, it was also possible to determine the injection mixture’s approximate penetration depth and the loosening zone’s degree of filling.
    Źródło:
    Geology, Geophysics and Environment; 2023, 49, 2; 197--202
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of electrical resistivity tomography in assessing complex soil conditions
    Autorzy:
    Kowalczyk, S.
    Zawrzykraj, P.
    Mieszkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060284.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    electrical resistivity tomography
    ERT
    resistivity cone penetration test
    RCPT
    peat
    Opis:
    Appropriate assessment of spatial variation of soil and hydrogeological conditions is a crucial issue in recognizing foundation soil. The best methods to achieve this goal are those that supply continuous rather than scattered data on soil medium variation. Electrical resistivity was measured with the resistivity cone penetration test (RCPT) and electrical resistance tomography (ERT) with electrodes spaced at 1 and 3 m in order to discriminate peat layers beneath low-resistivity clays. Soil conditions determined by drillings and ERT were not concordant, therefore resistivity modelling of the medium was conducted based on geological units determined by drillings and values of apparent resistivity obtained from RCPT. The strata thickness and electrode spacing is shown to have influence on resistivity imaging in complex soil conditions.
    Źródło:
    Geological Quarterly; 2015, 59, 2; 367--372
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of near-surface sediments based on Electrical Resistivity Tomography measurements in the vicinity of the Wawel Hill (Krakow, Poland)
    Autorzy:
    Ćwiklik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/955197.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    applied geophysics
    electrical resistivity tomography
    near-surface
    Wawel Hill
    Opis:
    The Electrical Resistivity Tomography (ERT) method was applied at the SW foot of the Wawel Hill was applied. The survey was carried out along five survey lines (P1-P5), 50 m long each. The Wenner alpha array with spacing a = 0.5 m, 1.0 m, 1.5 m, 2.0 m, 2.5 m, 4.0 m, 5.5 m, 7.5 m, and 10.0 m was used. The basic electrode spacing was 0.5 m. In apparent resistivity contours and sections we can distinguish two zones, which have noticeably different resistivity values. The low resistivity zone dominates in the deeper part of the section on all survey lines, especially on the profiles located in the close neighbourhood of the Vistula River. The relative high resistivity zone is probably the effect of complex local geology, as well as the influence of the limestone of the Wawel Hill. Based on ERT inversion results, three resistivity zones were distinguished. Then the probable lithological or/and anthropogenic character was assigned to them. The shallowest zone has the thickness of about 0.5 m and results probably from accumulation of weathered limestone fragments derived from the Wawel Hill. It may be that high resistivity zones have anthropogenic character. Below, a zone of water-bearing sands was recorded, which may result from redevelopment and reclamation of this area. Thickness of this zone increases towards the Vistula River. Another zone, which can be identified with limestone, was identified on survey lines P4 and P5. This could also be result of accumulation of the calcareous debris for the purpose of planation of the area. In order to generalize and simplify the characterization of the quaternary sediments, ID interpretation was made. The method allows us to estimate the depth of groundwater, which in that place is about 5 m.
    Źródło:
    Geology, Geophysics and Environment; 2013, 39, 4; 351-361
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Rogowiec Landslide Complex (Central Sudetes, SW Poland) : a case of a collapsed mountain
    Autorzy:
    Kasprzak, M.
    Duszyński, F.
    Jancewicz, K.
    Michniewicz, A.
    Różycka, M.
    Migoń, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059941.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    landslide
    hillslopes
    digital terrain model (DTM)
    LiDAR
    geomorphometry
    electrical resistivity tomography
    Opis:
    The paper focuses on a large relict landslide complex in the northeastern part of the Kamienne Mts. (Sudetes, SW Poland) developed on Carboniferous and Permian volcanic and clastic sedimentary rocks. Whilst the presence of mass movements around Mt. Rogowiec has long been known, no attempts have yet been made to offer a comprehensive analysis. This study is based on recognition of geomorphic features from LiDAR-derived DTM, geomorphometric analysis, field geomorphological mapping, joint measurements at representative exposures, and electrical resistivity tomography. The total area affected by gravitational slope deformation exceeds 40 ha and consists of a few smaller units that show distinctive patterns of displacement. The eastern slopes of the Mt. Rogowiec ridge have been reshaped by large slides involving rigid blocks of trachyandesite in the upper part and deformed sedimentary successions in the middle and lower part. The central part of the area has experienced lateral spreading which resulted in complete disintegration of the volcanic cap. Fresh-looking ridge-top trenches indicate that this process is ongoing. Subsequent movements included flows into pre-existing valleys and rock wall collapses to produce spectacular block streams. The scale and variety of deformation structures at Mt. Rogowiec make this locality unique in the Sudetes.
    Źródło:
    Geological Quarterly; 2016, 60, 3; 695--713
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mapping of the north-eastern part of kozłowicka buried valley based on geoelectrical data
    Autorzy:
    Topolewska, Sylwia
    Stępień, Marcin
    Kowalczyk, Sebastian
    Powiązania:
    https://bibliotekanauki.pl/articles/2025652.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    buried valley
    geoelectrical methods
    electrical resistivity tomography
    ERT
    Nauki o Ziemi
    Opis:
    The pa per is aim ing to de ter mi nate the ex tent of the north east ern arm of Koz³owicka bur ied val ley on the grounds of own re search by means of elec tri cal re sis tiv ity to mog ra phy – ERT and avail able ar chi val re searches. On the Hy drogeo log i cal map of Po land, ¯yrardów sheet (Felter and Nowicki, 1998a, b) Koz³owicka bur ied val ley was dif fer en tiated as an in di vid ual hydrogeological unit. The re sults of the anal y sis show that the ex tent of the struc ture, de fined by its up per bound ary, dif fers sig nif i cantly from the one sug gested on the sheet of Hydrogeological map of Po land. Since there was no data avail able in the north east ern part of the dis cussed arm of Koz³owicka bur ied val ley, the north ern bound ary was de fined only based on avail able geoelectrical sound ing pro files (Czerwiñska, 1988; Topolewska, 2015). In or der to con firm sug gested so lu tion, geoelectrical re search by means of elec tri cal re sis tiv ity to mog ra phy (ERT) was con ducted. The mea sure ments were per formed along 3 pro files lo cated in the area of in ter est. The au thors would like to point out the need of the us age of ERT in map ping and study ing bur ied struc tures that might be ground wa ter res ervoirs. As a re sult, one ob tains quasi-con tin u ous im age of elec tri cal re sis tiv ity of the subsurface. Due to the con trast of elec tri cal prop er ties of sed i ments, it is pos si ble to de ter mine up per and bot tom sur faces of bur ied struc tures, formed within gla cial de pos its.
    Źródło:
    Studia Quaternaria; 2016, 33; 91-101
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical resistivity tomography (ERT) and sedimentological analysis applied to investigation of Upper Jurassic limestones from the Krzeszowice Graben (Kraków Upland, southern Poland)
    Autorzy:
    Woźniak, T.
    Bania, G.
    Mościcki, W. J.
    Ćwiklik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059759.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    electrical resistivity tomography
    ERT
    Upper Jurassic limestones
    Oxfordian
    Krzeszowice Graben
    Southern Poland
    Opis:
    This paper highlights the application of shallow non-invasive geophysics (electrical resistivity tomography) supported by sedimentological analysis applied to the investigation, description and interpretation of Upper Jurassic limestones exposed in the abandoned quarry near the village of Tomaszowice (Kraków Upland, southern Poland). Within this site, on the northern margin of the Krzeszowice Graben, a facies diversity of Upper Jurassic limestones can be observed. Field exposures were analysed to broadly characterize these Upper Jurassic limestones in terms of facies and microfacies development. Three facies types, including pelitic limestones, bedded limestones and carbonate gravity-flow deposits, composed of numerous microfacies, have been distinguished. ERT study using a dipole-dipole array has been carried out, along 5 parallel 110 m long profiles and along a perpendicular 110 m long profile, north of the Tomaszowice Quarry wall. The use of ERT in combination with the geological data allowed characterization and description of the geology at the research site as well as the determination of the lithological composition and internal architecture of the subsurface. Furthermore, the ERT interpretation results indicated the presence of a series of a secondary faults closely linked with the Krzeszowice Graben. The distribution of the gravity-flow deposits reflects the fault zone pattern of the graben and Late Jurassic fault activity.
    Źródło:
    Geological Quarterly; 2018, 62, 2; 287--302
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    2D Electrical Resistivity Tomography interpretation ambiguity - example of field studies supported with analogue and numerical modelling
    Autorzy:
    Bania, G.
    Ćwiklik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/184445.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    electrical resistivity tomography ERT
    ambiguity
    2D inversion
    analogue modelling
    numerical modelling
    Opis:
    Single Electrical Resistivity Tomography (ERT) survey was carried out in the Manor and Park Complex in Nowa Huta (Krakow Branice, Poland). It was applied at a small distance and parallel to the longer wall of a monumental building containing an empty 3 m deep basement. Analogue modelling was performed in order to recreate the field study at the proper scale. The laboratory set-up consisted of a water tank where electrodes were mounted to the particular plate, which rested on water surface. The basement model was made out of a non-conducting material. The default and robust inversions were tested and these variants were also considered with the use of numerical modelling. Laboratory experiments have confirmed that zones visible in the interpreted field section are caused by the influence of the building cellar located next to the survey line. Zones of this kind are additionally disturbed by the local geological structure. The experiment has pointed out, among others, that as the distance between the survey line and the underground body increases, the inversion results are still burdened by an object influence. Thus, similar situations can be verified with the use of analogue modelling presented in this paper or 3D numerical one.
    Źródło:
    Geology, Geophysics and Environment; 2013, 39, 4; 331-339
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using Electrical Resistivity Tomography (ERT) as a tool in geotechnical investigation of the substrate of a highway
    Autorzy:
    Maślakowski, Maciej
    Kowalczyk, Sebastian
    Mieszkowski, Radosław
    Józefiak, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/2027103.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electrical resistivity tomography (ERT)
    expressway
    field testing
    geotechnical engineering
    organic soils
    peat
    Opis:
    Geo log i cal and geotechnical en gi neer ing field tests, like struc ture drillings and dy namic (DPL, DPSH) or static probing (CPT), are con sid ered for a fun da men tal source of in for ma tion about soil and wa ter en vi ron ments. Since Eurocode 7 has been in tro duced, it has be come more com mon to use also dilatometers (DMT) or pres sure me ters (PMT). Re sults ob tained us ing all the men tioned tests are al ways of a dis crete na ture – in for ma tion is pro vided in cer tain points in the field. How ever, they de ter mine the ba sis for cre at ing spa tial mod els of geo log i cal struc ture and geotechnical con di - tions of a sub stra tum. The range and num ber of in ves ti ga tions con ducted (in clud ing drill ing, prob ing and lab o ra tory tests) in flu ence pre ci sion, in which a geo log i cal struc ture is iden ti fied and thus, also af fect prob a bil ity of com pat i bil ity be tween spa tial model and real geo log i cal con di tions of a sub stra tum. In the pa per, re sults of non-in va sive elec tri cal re sis tiv ity to mog ra phy (ERT) method are pre sented, com pris ing 2-di men sional im age of a soil me dium re sis tance. Elec tri cal re sis tance is a pa ram e ter that re flects di ver si fi ca tion of a soil me dium, con sid er ing its lithological as pect. In ad di tion, when com bined with drill ing re sults, it can be used to ac cu rate de ter mi na tion of bound aries be tween soil lay - ers. Car ry ing out of ERT tests in the field dur ing ex press way con struc tion con trib uted to iden ti fi ca tion of weak, low-strength soils like or ganic soils (peat, aggradated mud) and of soft con sis tency co he sive soils. These kinds of soil are the main cause for un ac cept able de for ma tions ap pear ing in the new road en gi neer ing struc ture.
    Źródło:
    Studia Quaternaria; 2014, 31; 83-89
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An integrated approach for landslide hazard assessment: A case study of the Middle Dnieper Basin, Ukraine
    Autorzy:
    Ivanik, Olena
    Fonseca, Joana
    Shabatura, Oleksandr
    Khomenko, Ruslan
    Hadiatska, Kateryna
    Kravchenko, Dmytro
    Powiązania:
    https://bibliotekanauki.pl/articles/2073724.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    Dnieper River basin
    electrical resistivity tomography
    ERT
    infrared thermography
    IRT
    landslide hazards
    Opis:
    Ukraine is characterised by active natural hazards processes within different structural, tectonic and landscape zones. In Middle Dnieper basin region mass movement processes have great impact on people’s livelihoods and infrastructure. These processes occur on the slopes with different geological structure. The determining causes include lithologic and stratigraphic conditions, hydrogeological regime, structural and textural peculiarities of rocks and the geomorphology of the slopes. Landslide inventory database has been developed based on long-term observations of more than 400 landslides and landslide-prone areas. This paper takes efforts forward by combining different geological and geophysical methods to advance the current understanding of landslide phenomena and contributing towards a better informed assessment of landslide hazard and risk. The developed methodology is implemented in a test sites of Kyiv region, covering an area of 18.3 km2 situated in the Middle Dnieper basin. Electrical Resistivity Tomography, Self-Potential and Infrared Thermography techniques were employed to investigate the lithostratigraphic sequences, the geometry of landslide body and potential mass movement. The results presented here confirm the potential of using an integrated approach that combines different field data to better plan mitigation activities and measures for the effective land management. This study will be useful in increasing the safety aspects of the infrastructures and lives and also for planning of research and developmental activities.
    Źródło:
    Journal of Water and Land Development; 2022, 52; 81--86
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Role of geophysical surveys in the identification of water escape zones from retention lakes: a case study on a selected object in Upper Silesia
    Autorzy:
    Mieszkowski, Radosław
    Wójcik, Emilia
    Kozłowski, Mikołaj
    Popielski, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2025248.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Ground penetrating radar (GPR) method
    electrical resistivity tomography (ERT) method
    retention lake
    water reservoir
    Opis:
    The main scientific goal of this work is the presentation of the role of selected geophysical methods (Ground-Penetrating Radar GPR and Electrical Resistivity Tomography ERT) to identify water escape zones from retention reservoirs. The paper proposes a methodology of geophysical investigations for the identification of water escape zones from a retention fresh water lake (low mineralised water). The study was performed in a lake reservoir in Upper Silesia. Since a number of years the administrators of the lake have observed a decreasing water level, a phenomenon that is not related to the exploitation of the object. The analysed retention lake has a maximal depth between 6 and 10 m, depending on the season. It is located on Triassic carbonate rocks of the Muschelkalk facies. Geophysical surveys included measurements on the water surface using ground penetration radar (GPR) and electrical resistivity tomography (ERT) methods. The measurements were performed from watercrafts made of non-metal materials. The prospection reached a depth of about 1 to 5 m below the reservoir bottom. Due to large difficulties of conducting investigations in the lake, a fragment with an area of about 5,300 m2, where service activities and sealing works were already commenced, was selected for the geophysical survey. The scope of this work was: (1) field geophysical research (Ground-Penetrating Radar GPR and Electrical Resistivity Tomography ERT with geodesic service), (2) processing of the obtained geophysical research results, (3) modelling of GPR and ERT anomalies on a fractured water reservoir bottom, and (4) interpretation of the obtained results based on the modelled geophysical anomalies. The geophysical surveys allowed for distinguishing a zone with anomalous physical parameters in the area of the analysed part of the retention lake. ERT surveys have shown that the water escape zone from the reservoir was characterised by significantly decreased electrical resistivities. Diffraction hyperboles and a zone of wave attenuation were observed on the GPR images in the lake bottom within the water escape zone indicating cracks in the bottom of the water reservoir. The proposed methodology of geophysical surveys seems effective in solving untypical issues such as measurements on the water surface.
    Źródło:
    Studia Quaternaria; 2018, 35; 121-129
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rola obrazowania elektrooporowego w uszczegółowieniu skomplikowanej budowy geologicznej wzgórza Morasko w Poznaniu
    Geoelectrical imaging of complex geological structures of the Morasko Hill in Poznań
    Autorzy:
    Pacanowski, G.
    Sokołowska, M.
    Mieszkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075561.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda elektrooporowa
    ERT
    model geologiczny
    zdeformowane glacitektonicznie
    electrical resistivity tomography ERT
    geological model
    glaciotectonic deformations
    Opis:
    The paper focuses on the problem of developing reliable geological models based on point data from boreholes and two-dimensional results of geophysical surveys with application of electrical resistivity tomography (ERT). The study area was the Morasko Hill in Poznañ (Poland), located within frontal moraines overlying Pliocene clays with a top surface strongly deformed glaciotectonically. Due to the presence of these deformations, the study area shows a complex geological structure. Analysis of archival boreholes indicates that the top surface of the Pliocene clays is extremely variable, hampering unequivocal determination of geological boundaries. ERT measurements were used to recognize the detailed geological structure of the area. Next, additional boreholes and CPTU soundings were made in selected localities characterized by anomalies in the distribution of electrical resistivity values. Following the drillings and soundings, and the results of the geophysical survey were reinterpreted. Such complex methodology of field work, including geophysical and geological surveys, has allowed us to present a reliable geological model of the area, in which the ERT results coincide with the drilling results. In practice, the preparation of an appropriate geological model, particularly in the vicinity of escarpments and slopes, is indispensable for designers of construction objects in the selection of foundations and analysis of slope stability.
    Źródło:
    Przegląd Geologiczny; 2016, 64, 4; 238--244
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena stateczności wybranych fragmentów skarpy warszawskiej w świetle badań geofizycznych metodą tomografii elektrooporowej
    The stability evaluation of Warsaw slope selected pieces based on Electrical Resistivity Tomography survey (ERT)
    Autorzy:
    Kowalczyk, S.
    Mieszkowski, R.
    Pacanowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074252.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    stateczność skarpy
    skarpa warszawska
    metoda tomografii elektrooporowej
    ERT
    slope stability
    Warsaw Slope
    electrical resistivity tomography
    Opis:
    In this paper there are presented application of Electrical Resistivity Tomography method (ERT) for the evaluation of slope stability on the example of four pieces of Warsaw slope. The survey was conducted on Bielany at Farysa street, downtown close to Academic Church St. Anne, on Ursynów at Kiedacza Street and at Kokosowa Street. Selected pieces of Warsaw slope differ between therself with soil-water conditions, geometry (a slope angle and height), an urbanized terrain and hazard of landslide. In this paper there are geological cross-section for selected slop pieces, the slop stability index was calculated (F) and ERT measurements. The purpose of this paper is presentation of the processing and interpretation of data received in ERT measurements for more exact description of slop stability.
    Źródło:
    Przegląd Geologiczny; 2014, 62, 10/2; 634--640
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical resistivity tomography (ERT) of pit-and-mound microrelief, Mt Rogowa Kopa case study, the Stołowe Mountains, SW Poland
    Autorzy:
    Pawlik, Ł.
    Kasprzak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/294410.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    2D electrical resistivity tomography (ERT)
    pit-and-mound microtopography
    tree uprooting
    Stołowe Mountains
    Sudety
    Opis:
    This article presents results of geophysical analyses based on electrical imaging of slope mantles with pit-and-mound microtopography developed on the Rogowa Kopa hillslope in the Stołowe Mountains, SW Poland. The use of two dimensional electrical resistivity tomography (2D ERT) to non-invasive analyses of the hillslope microrelief allowed completing previous results of geomorphological and soil studies. The tomograms (inversion results) acquired across individual forms of treethrow pits and mounds can be interpreted according to regolith thickness and its wetness, but also smaller features such as relict and fresh tree root systems detected in the mounds. These features were compared to a general picture of geoelectrical resistivity measured in the main cross-section of the analyzed hillslope. The differences in slope cover characteristics observed on the tomograms confirm important role of the tree uprooting process in formation of some basic features of the regolith and soils, including their uneven redistribution across the hillslope.
    Źródło:
    Landform Analysis; 2015, 29; 41-47
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geophysical exploration of castle remains in Barwałd Górny (near Kalwaria Zebrzydowska, Poland) using electrical resistivity tomography (ERT) with assistance of depth of investigation index (DOI) method
    Autorzy:
    Glazer, M.
    Kula, D.
    Saternus, R.
    Lewicki, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/100776.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    tomografia
    ERT
    archeologia
    indeks DOI
    metoda
    electrical resistivity tomography
    archeology
    depth of investigation index
    DOI
    Opis:
    In March of 2014 at ruins of the 14th century castle, situated at the top of Mount Żar in Małopolska region, Poland, geophysical surveys were performed. Surveys were planned to investigate remains of the castle that could remain in the ground. Electrical Resistivity Tomography method was used there. In the paper 4 sections have been presented. During interpretation, as the supporting method, maps of Depth-of-Investigation (DOI) index have been used. Results of the surveys can point out potential remains of the castle walls and ruins of buildings that were situated in the stronghold.
    Źródło:
    Contemporary Trends in Geoscience; 2014, 3, 1; 24-31
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical resistivity tomography for geo-engineering investigation of subsurface defects: a case study of Etioro-Akoko highway, Ondo State, southwestern Nigeria
    Autorzy:
    Akingboye, Adedibu Sunny
    Osazuwa, Isaac Babatunde
    Mohammed, Muraina Zaid
    Powiązania:
    https://bibliotekanauki.pl/articles/2024721.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    electrical resistivity tomography (ERT)
    geo-engineering
    deep weathered troughs
    multiple fractures
    pavement failure
    highway
    Etioro-Akoko
    Opis:
    The durability of roads is dependent on the proper screening of the variations in subsurface geological characteristics and conditions through geo-engineering investigations and good construction practices. In this study, electrical resistivity tomography (ERT) technique was used to investigate the subsurface defects and potential failures along the substrate of Etioro-Akoko highway, Ondo State, southwestern Nigeria. Results of the inverse model resistivity sections generated for the two investigated traverses showed four distinct subsurface layers. The shallow clayey topsoil, weathered layer, and partially weathered/fractured bedrock have resistivity values ranging from 4–150 ohm-m, 10–325 ohm-m, and 205–800 ohm-m, with thickness values of 0–2 m, 0.5–12.5 m, and less than few meters to > 24 m, respectively. The fresh bedrock is characterised by resistivity generally in excess of 1000 ohm-m. The bedrock mirrored gently to rapidly oscillating bedrock troughs and relatively inclined deep penetrating multiple fractures: F1–F’1, F2–F’2 and F3–F’3, with floater in-between the first two fractures. These delineated subsurface characteristic features were envisaged as potential threats to the pavement of the highway. Pavement failures in the area could be attributed to the incompetent clayey sub-base/substrate materials and the imposed stresses on the low load-bearing fractured bedrock and deep weathered troughs by heavy traffics. Anticipatory construction designs that included the use of competent sub-base materials and bridges for the failed segments and fractured zones along the highway, respectively, were recommended.
    Źródło:
    Studia Quaternaria; 2020, 37; 101-107
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza możliwości zastosowania metody tomografii elektrooporowej (ERT) do rozpoznania miąższości pokrywy laterytowej
    Applicability analysis of the electrical resistivity tomography (ERT) method for the diagnosis of laterite cover thickness
    Autorzy:
    Pacanowski, G.
    Czarniak, P.
    Piechota, A.
    Mieszkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075560.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    tomografia elektrooporowa
    VES
    oporność właściwa
    lateryty
    złoża niklu
    złoża kobaltu
    electrical resistivity tomography
    electrical resistivity sounding
    laterite
    nickel and cobalt deposit
    Opis:
    The paper discusses the problem of determining the thickness of a laterite cover using electrical resistivity tomography (ERT) in a selected area of the Seram Island in Indonesia. Seram Island lies in the tropical zone between the Seram and Banda seas. The laterite covers are rich in nickel, cobalt, iron and other metals. Concentrations of these metals in the laterites are high enough to form economic deposits. A significant part of the report concerns the measurement technique (ERT method) in difficult climatic (high humidity and temperature) and topographic conditions (equatorial jungle with significant variations in elevation) and the methods of processing and interpretation of the acquired data. The problem seems very interesting, because geophysical prospecting is currently more and more often conducted in poorly accessible regions of the world. Additionally, there are no sufficient and commonly available publications that would allow us to get acquainted with local measurement problems by potential contractors of similar geophysical investigations. The primary result of the geophysical survey was to determine the electrical resistivity of bedrock and laterite. This was the basis for the development of sections of electrical resistive distribution for the ERT profiles, which enabled to estimate the depth to the crystalline basement and the laterite thickness. It also facilitated to produce a map of laterite thickness, which may be an important material to develop the concept of searching and mining of nickel and cobalt ore.
    Źródło:
    Przegląd Geologiczny; 2016, 64, 4; 245--253
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozpoznanie budowy geologicznej podłoża obiektu ARENA w Krakowie-Czyżynach metodami geofizycznymi pod kątem występowania gruntów organicznych
    Astudy of bedrock geological structure of the ARENA object in Kraków-Czyżyny using geophysical methods to detect the presence of organic soil
    Autorzy:
    Pasierb, B.
    Nawrocki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075329.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    tomografia elektryczna
    rezystywność
    ERT
    georadar
    GPR
    gleby organiczne
    electrical resistivity tomography
    Ground Penetrating Radar
    organic soil
    Opis:
    Geophysical research assists in clarifying the methodology of future building work. The geological structure in terms of lithological variation of Quaternary and older formations was identified in the area of the proposed garage near the ARENAobject in Krakow. In particular, the possibility of the presence of inserts of organic soils was determined. Ground Penetrating Radar (GPR) and Electrical Resistivity Tomography (ERT) were used for more complete and comprehensive recognition of the ground. As a result of the study of the subsurface, thin interbeds of weak bearing organic soils have been found just outside the outline of the planned building. It was found that the Quaternary formations which were identified by geophysical and geotechnical methods are an appropriate ground for direct foundation of the object.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 5; 289--294
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Triassic-Jurassic section in the southern part of the Holy Cross Mts. (Poland) implications for palaeogeography
    Autorzy:
    Kozłowska, M.
    Barski, M.
    Mieszkowski, R.
    Antoszewska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059877.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    sedimentology
    fluvial deposits
    shallow marine deposits
    Middle Jurassic transgression
    dinoflagellate cysts
    stratigraphy
    electrical resistivity tomography
    ERT
    Opis:
    Sedimentological, stratigraphical and geophysical studies across a new Triassic-Jurassic transition section in the Holy Cross Mts., Poland have revealed a large sedimentary hiatus embracing the entire latest Triassic–Early Jurassic – earliest Middle Jurassic time interval and yielded new data on the Triassic fluvial system and on Middle Jurassic shallow marine sedimentation. The presence of organic-walled dinoflagellate cysts allowed a precise age assignment of the black clay facies. Regional discussions and comparisons may be made with other areas with a similar depositional environment in Poland. For the first time a counterpart of the “Kościeliskie Beds” lithostratigraphic unit is proposed to exist in the Holy Cross Mts. area.
    Źródło:
    Geological Quarterly; 2016, 60, 2; 365--484
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrical resistivity tomography for spatiotemporal variations of soil moisture in a precision irrigation experiment
    Autorzy:
    Mertzanides, Y.
    Tsakmakis, I.
    Kargiotis, E.
    Sylaios, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082914.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    electrical resistivity tomography
    non-intrusive
    soil measurements
    soil moisture determination
    heterogeneous
    clay-rich soils
    water-saving technology
    Opis:
    Soil moisture temporal variations play a key role in the hydrological processes occurring in the unsaturated zone, which are critical for annual crop yields. The electrical resistivity tomography technique was applied in a field cultivated with cotton in northern Greece, thereby investigating its potential to serve as a reliable soil moisture-monitoring tool for precision irrigation in highly heterogeneous, clay-rich soils. Repeated surface resistivity measurements were made along two plant lines combined with soil water content measurements conducted with a reference gravimetric method and an electromagnetic sensor. Resistivity pseudo-sections were inverted to produce 2D resistivity models, and time-lapse inversion algorithms were also used, to better calculate the temporal changes in subsurface soil resistivity. The results showed clear spatial and temporal changes in resistivity transects in accordance with rainfall/irrigation and dry periods. The soil resistivity data exhibited a power model relationship with gravimetric soil moisture point measurements and a fair correlation with electromagnetic sensor profiles.
    Źródło:
    International Agrophysics; 2020, 34, 3; 309-319
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Subsurface imaging of fluvial deposits of the Wisła River valley in Kraków (southern Poland) by 2D ERT survey
    Autorzy:
    Bania, Grzegorz
    Woźniak, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2201218.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    electrical resistivity tomography
    ERT
    gradients of interpreted resistivity
    2D ERT modeling
    fluvial deposits
    Wisła River valley
    southern Poland
    Opis:
    We describe the application of 2D ERT (electrical resistivity tomography) surveys to investigate the spatial complexity of fluvial deposits of the Wisła River valley in the eastern part of Kraków (southern Poland). All ERT survey lines were completed within the industrially influenced floodplain of the Wisła River at two research sites. Due to the transformation of the natural state of the environment through many years of industrial activity of the ArcelorMittal Kraków plant, some of the geomorphological elements analysed have been irretrievably transformed and hidden by anthropogenic accumulations such as waste landfills and engineering structures. Hence, many years of soil contamination have changed the primary resistivity characteristics of the subsurface. For this purpose, the measurement array applied combines standard arrays, i.e., Wenner-Schlumberger and Dipole-Dipole, which gave improved results (higher resolution) in comparison to the standard single array. The data interpretation method was supported by the calculation and visualization of the vertical and horizontal gradients of the interpreted resistivity within the resistivity sections. This approach allowed accurate determination of resistivity boundaries on the ERT resistivity sections and thus helped lithological interpretation of the fluvial deposits in the research area. The resistivity of water in a channel located within one of the analysed areas has impacted some of the research results. Furthermore, 2D ERT forward modeling was implemented to generate synthetic datasets. The synthetic data allowed investigation of the influence of groundwater contamination on the resistivity distribution within superficial layers, and also tested the ability of the 2D ERT model to recognize the detailed spatial distribution of palaeomeander (meander scar) infills. All methods have provided new information on the industrially influenced floodplain of the Wisła River in Kraków.
    Źródło:
    Geological Quarterly; 2022, 66, 3; art. no. 23
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Case study of electrical resistivity tomography measurements used in landslides investigation, Southern Poland
    Autorzy:
    Mita, M.
    Glazer, M.
    Kaczmarzyk, R.
    Dąbrowski, M.
    Mita, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/100780.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Śląski. Wydział Nauk o Ziemi
    Tematy:
    electrical resistivity tomography
    ERT
    numerical modelling
    landslide
    mass movements
    elektryczna tomografia rezystywnościowa
    modelowanie numeryczne
    osuwisko
    ruchy masowe
    Opis:
    Mass movements are an ever present threat to building construction, water management, vegetation formation and biodiversity. This paper presents an approach to landslides research based on non-invasive geoelectrical method - Electrical Resistivity Tomography (ERT). Mapping and displacement monitoring of unstable slopes is crucial for the hazards prevention and assessment. The ERT technique is an effective tool to obtain structural differentiation of geological medium through interpretation of 2D electrical resistivity models. The main advantage of the method is a wide range of applicability what makes its useful during field works on a landslide. It is commonly used for measurements of slope instability, determination of shear surface, landslide susceptibility, depth of bedrock, slip plane geometry. The aim of the work is to identify the geological structures underneath three selected landslides in south Poland: in Racibórz, Milówka and Porąbka. Attempts have been focused on determination of the usefulness of the proposed ERT methodology for evaluation of possible further development of mass movements. On two investigation sites two different arrays have been used: Wenner-Schlumberger and dipole-dipole which allowed to prepare combined data set and resistivity models based on them. Forward modelling of synthetic models based on a priori information allowed to understand anomalies present on resistivity models. Applied approach ensured quality increase of final interpretation of resistivity models.
    Źródło:
    Contemporary Trends in Geoscience; 2018, 7, 1; 110-126
    2299-8179
    Pojawia się w:
    Contemporary Trends in Geoscience
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geomorphological and geophysical analysis of the Warsaw slope stability conditions in the Ursynow district
    Geomorfologiczna i geofizyczna analiza uwarunkowań stateczności skarpy warszawskiej w rejonie Ursynowa
    Autorzy:
    Kaczmarek, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/887494.pdf
    Data publikacji:
    2014
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    geomorphological analysis
    geophysical analysis
    numerical method
    electrical resistivity tomography
    Warsaw city
    Warsaw slope
    slope stability
    Ursynow district
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2014, 23, 3[65]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie lotniczego skaningu laserowego i tomografii elektrooporowej w kompleksowych badaniach osuwisk : przykład z Pogórza Dynowskiego (Karpaty zewnętrzne)
    Application of airborne laser scanning and electrical resistivity tomography in a comprehensive research of landslides : example from the Dynów Foothill (Outer Carpathians)
    Autorzy:
    Kamiński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075338.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    lotniczy skaning laserowy
    Metoda Elektrooporowa
    osuwisko
    Pogórze Dynowskie
    airborne laser scanning (ALS)
    electrical resistivity tomography
    landslide
    Dynów Foothill
    Opis:
    The study is focused on this part of the Dynów Foothiil, where many landslides are active. Extensive inventory work in the sites predisposed to development of landslides, initiated a search in order to improve traditional methods of mapping landslides. The traditional methods rely mainly on the analysis of topographic maps, geological and geomorphological mapping in the field. This article also descrobes the test of one of the modern methods of three-dimensional earth imaging – Airborne Laser Scanning. A major advantage of the method is the ability to filter out vegetation and other objects on the ground, which results in a precise terrain model. The relief inside the landslide consists of several secondary scarps and two lakes.The aim of the geophysical survey was primarily to interpret the geological structure of the landslides basement and the landslide body structure and to determine the depth of occurrence of the slide zone. It occurs at the shallowest depth in the upper part of the landslide, where Quaternary deposits are sliding down the slope of the surface of the top of variegated shales. The depth of slide surface increases significantly from the tectonic overthrust, where variegated shales are thrust on the hale-sandstone flysch layers of the Krosno Beds. In this part of the landslide, the slip surface can be at a depth of even 25 metres and is developed only within the flysch Krosno Beds.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 7; 410--417
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obraz fizyczny zwierciadła wód pierwszego poziomu wodonośnego w świetle badań metodą tomografii elektrooporowej (ERT)
    Physical image of water table determined by the electrical resistivity tomography (ERT) method
    Autorzy:
    Gańko, M.
    Mieszkowski, R.
    Gańko, A.
    Tuchołka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2062264.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda tomografii elektrooporowej (ERT)
    oporność gruntu
    poziom wody podziemnej
    osady niskooporowe
    electrical resistivity tomography ERT
    soil resistivity
    groundwater level
    low-resistivity sediments
    Opis:
    W artykule przedstawiono i omówiono wyniki rozpoznania pierwszego poziomu wodonośnego za pomocą metody tomografii elektrooporowej (ERT). Wybrano trzy poligony badawcze w obrębie Warszawy, o różnej budowie geologicznej i odmiennych warunkach hydrogeologicznych. Jeden poligon znajduje się w obrębie wysoczyzny polodowcowej na terenie Warszawy („Pole Mokotowskie”), a dwa pozostałe są położone w obrębie doliny rzeki Wisły („Józefów” i „Tarchomin”). Poligony umiejscowione w obrębie doliny rzeki charakteryzują się m.in. swobodnym poziomem zwierciadła wody, natomiast w obrębie poligonu na wysoczyźnie polodowcowej występuje poziom wodonośny pod ciśnieniem. Rezultaty wykonanych badań dowodzą, że poziom wód podziemnych wyraźnie zaznacza się w obrazie uzyskanym metodą ERT, ale nie zawsze daje precyzyjne wyniki. Dokładność jego wyznaczenia zależy od uziarnienia gruntów, ich kontrastu opornościowego, wilgotności, metody profilowania elektrycznego oraz od ukształtowania stropu osadów niskooporowych (Warszawa – iły plioceńskie).
    The paper presents the results and interpretation of Electrical Resistivity Tomography (ERT) study of the first aquifer. The study was carried out in the Warsaw region on three selected test fields with different geological structure and hydrogeological conditions: two in the Wisla River valley (“Józefów” and “Tarchomin”) and one in a postglacial upland in Warsaw (“Pole Mokotowskie”). The river valley aquifers are unconfined, whereas in the upland, the first aquifer is confined and under pressure. The results clearly show the presence of aquifers on the ERT image, but the positioning of the water level is not always precise. The precision depends on granulometry of sediments, resistivity contrasts, chosen method of resistivity measurement and morphology of low-resistivity sediments (e.g. Pliocene clays in the Warsaw area).
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2013, 456 Hydrogeologia z. 14/1; 167--172
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The contribution of geophysics to archaeology: a case study of an ancient canal of the Oc Eo culture in the Mekong Delta, Vietnam
    Autorzy:
    Le, Ngoc Thanh
    Nguyen, Quang Dung
    Nguyen, Quang Bac
    Nguyen, Quang Mien
    Nguyen, Dan Vu
    Duong, Ba Man
    Nguyen, Dinh Chau
    Powiązania:
    https://bibliotekanauki.pl/articles/184367.pdf
    Data publikacji:
    2019
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    electromagnetic profiling
    electrical resistivity tomography
    hand-auger
    radiocarbon dating
    ancient canal
    alluvial deposits
    Oc Eo culture
    Ba The mountain
    Opis:
    Generally, underground ancient canals are infilled with alluvial materials, with the canal bed and substrate often having different resistivity values. This study aimed to determine the location and morphology of Malleret’s ancient canal 16 located to the southeast of the Ba The mountain, Mekong Delta, Vietnam by means of geophysical techniques. Two geophysical methods were used: electromagnetic profile and electric resisitivity tomography. A geoelectric structure 70 m long with 70–95 mS/m of apparent conductivity was found. On the electrical resistivity tomography section, a resistivity zone of 10–20 Ω∙m, 1–4 m deep, 70 m wide corresponds to the mentioned above geoelectric structure, which is in an asymmetric U-shape extending toward the southeastern bank of canal 16. Hand-augering confirmed that the canal bed is fully incised into Holocene sediments as a substrate which stretches down to the Pleistocene. The sediments are composed of loams mixed with plant remains with a resistivity ρ ~ 10–15 Ω∙m. Both of the canal banks at a depth of 5 m are made up of Holocene sedi-ments (ρ ~ 4–10 Ω∙m). The 14C measurements determined the age of the organic matter in the canal as being equal to 1210 ±85 BP, suggesting canal 16 ceased being operational at that time. The precise positioning of canal 16 on the ground surface, as well as identifying the morphology of the canal bed, were corroborated by geophysical techniques. The obtained results are of considerable value to archaeologists.
    Źródło:
    Geology, Geophysics and Environment; 2019, 45, 1; 45-56
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Obrazowanie elektrooporowe warunków hydrogeologicznych strefy brzegowej wyspy Wolin
    Geoelectrical imaging of hydrogeological conditions of the coastal zone of Wolin Island
    Autorzy:
    Pacanowski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061773.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metody geoelektryczne
    mineralizacja wód
    ingresja wód
    tomografia elektrooporowa
    ERT
    geoelectrical methods
    total dissolved solids (TDS)
    water ingress
    electrical resistivity tomography
    Opis:
    W artykule zaprezentowano problematykę złożonych warunków hydrogeologicznych w strefie brzegowej wyspy Wolin, które można obrazować za pomocą metod geoelektrycznych. Wody podziemne warstw wodonośnych strefy brzegowej znajdują się w stałym kontakcie z zasolonymi wodami morskimi. Fakt ten stanowi groźbę degradacji wód podziemnych i decyduje o specyfice ich ochrony. W utworach czwartorzędowych, na obszarach, gdzie wody podziemne wykazują niską mineralizację, wartości oporności utworów przepuszczalnych i nieprzepuszczalnych różnią się zdecydowanie, w związku z tym klasyfikacja hydrogeologiczna wyników, jakie otrzymujemy z pomiarów elektrooporowych nie stanowi problemu. Na obszarze prowadzonych badań sytuacja jest zupełnie inna i dużo bardziej skomplikowana, ze względu na ingresję słonych wód morskich do warstw wodonośnych. Co więcej, pośrednio mineralizacja ma również wpływ na oporności utworów słabo przepuszczalnych i praktycznie nieprzepuszczalnych.
    The article discusses the problem of complex hydrogeological conditions in the coastal zone of Wolin Island in Poland. Hydrogeological situation of the island was imaged by geoelectrical methods. Groundwater of the coastal zone is in constant contact with the saline sea waters. This fact constitutes a threat of groundwater degradation and has an influence on the methods of groundwater protection. The resistivity of Quaternary permeable and impermeable deposits is significantly different in areas where groundwater is characterized by low values of total dissolved solids (TDS). This implies that hydrogeological classification of the results obtained from electrical resistivity tomography (ERT) is not difficult. In the study area, the situation is completely opposite and much more complicated because of salty sea water ingress into aquifers. This affects the resistivity values of permeable and impermeable deposits, obtained from geophysical tests.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2016, 466; 225--232
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of contamination in Namson Landfill, Hanoi, Vietnam by hydrogeophysical methods
    Ocena stopnia skażenia terenu na obszarze składowiska odpadów Namson w Hanoi (Wietnam) z wykorzystaniem metod hydro-geofizycznych
    Autorzy:
    Van Giang, N.
    Vu, N. T.
    Duan, N. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/218928.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    obrazowanie elektrooporowe
    metoda potencjałów własnych
    badanie elektromagnetyczne bardzo niskich częstotliwości (VLF)
    electrical resistivity tomography
    self-potential
    hydrogeophysics
    NamSon waste site
    Opis:
    The main objective of this study was to assess the environmental impact of the subsurface geological structure in Nam Son landfill by hydrogeophysical method. The Electrical Resistivity Tomography (ERT), Self-Potential (SP) and Very Low Frequency (VLF) method was used for geological structure investigation. Three profiles (total 900 m long) of two-dimensional ERT, VLF density sections and 180 SP data points scattered within the study area near the disposal site were implemented. Surface water and groundwater samples were collected from 10 sites in the area for hydrochemical analysis. Interpretations of geophysical data show a low resistivity zone (<15 Ω m), which appears to be a fully saturated zone with leachate from an open dumpsite. There is a good correlation between the geophysical investigations and the results of hydrochemical analysis.
    Podstawowym celem pracy było określenie stopnia oddziaływania na środowisko w podpowierzchniowych warstwach geologicznych na obszarze składowiska odpadów Nam Son przy wykorzystaniu metod hydro-geofizycznych. W badaniach budowy geologicznej terenu wykorzystano metodę obrazowania elektrooporowego (Electrical Resistivity Tomography – ERT), metodę potencjałów własnych (Self-Potential – SP) oraz badania elektromagnetyczne bardzo niskich częstotliwości (Very Low Frequency – VLF). Wytypowano trzy profile (o całkowitej długości 900 m) do dwuwymiarowego obrazowanie ERT oraz siatki gęstości do badania elektromagnetycznego VLF oraz 180 rozproszonych punktów do badań metodą potencjałów własnych na badanym terenie. Próbki wód powierzchniowych i gruntowych do analizy chemicznej pobrano z 10 lokalizacji na terenie składowiska. Interpretacja danych geofizycznych wykazała istnienie strefy charakteryzującej się niskimi oporami (<15 Ω), w pełni nasyconej odpadami ciekłymi wypłukiwanymi z otwartego składowiska. Stwierdzono wysoki poziom korelacji pomiędzy rezultatami badań geofizycznych a wynikami analiz chemicznych.
    Źródło:
    Archives of Mining Sciences; 2018, 63, 2; 397-416
    0860-7001
    Pojawia się w:
    Archives of Mining Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    ERT i GPR – geofizyczne metody badań podłoża wykorzystywane w budownictwie liniowym
    Geophysical methods ERT and GPR of subgrade identification in road and railway engineering
    Autorzy:
    Maślakowski, M.
    Józefiak, K.
    Brzeziński, K.
    Superczyńska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075727.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    obrazowanie elektrooporowe
    ERT
    mobilna metoda geofizyczna
    GPR
    geofizyczny test w terenie
    electrical resistivity tomography
    Ground Penetrating Radar
    geophysical field tests
    Opis:
    Correct determination of subgrade layers and properties is fundamental for later design and construction stages. Results obtained using traditional geotechnical tests are always of an overly specific nature - information is only provided in certain points in the field. Number of test points and the accuracy of results’ interpretation among them influence the design of an engineering structure foundation, which greatly impacts the cost of a project. Also, the lack of soil testing or insufficient investigation of soil conditions can be the reason for all kinds of legal claims from contractors which often exceed the whole investment budget by several or even several dozen percent. In order to prevent that situation new directives for geotechnical testing include additional geophysical methods such as electrical resistivity tomography (ERT) and ground penetrating radar (GPR). These non-invasive methods can give a spatial image and thus improve the accuracy of soil strata identification. However, these methods have also disadvantages and inaccuracies related to the measurement principles and interpretation of the results. This paper presents limitations and possible errors of geophysical methods ERT and GPR based on example tests carried out for road and railway engineering structures.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 765--771
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    DC resistivity studies of shallow geology in the vicinity of Vistula River flood bank in Czernichów village (near Kraków in Poland)
    Autorzy:
    Mościcki, W. J.
    Bania, G.
    Ćwiklik, M.
    Borecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/178678.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    DC resistivity
    shallow geology
    Quaternary
    geophysics in civil engineering
    electrical sounding
    electrical resistivity tomography
    flood bank
    sondowanie elektrooporowe
    wał przeciwpowodziowy
    czwartorzęd
    geofizyka w inżynierii lądowej i wodnej
    Opis:
    DC resistivity methods, soundings and Electrical Resistivity Tomography, were applied to study shallow geology in the place of planned construction of an experimental flood bank. The geoelectrical surveys provided quantitative information about the spatial presence of the various geoelectrical/geological layers: alluvial soils, sands, gravels and clays. ERT allowed maps to be constructed showing subsurface structure. A combination of geoelectrical and geological information resulted in a much better identification of the geological structure.
    Źródło:
    Studia Geotechnica et Mechanica; 2014, 36, 1; 63-70
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie metody georadarowej i tomografii elektrooporowej do obserwacji położenia swobodnego zwierciadła wód pierwszego poziomu wodonośnego
    Ground Penetrating Radar (Georadar – GPR) tests and Electrical Resistivity Tomography (ERT) tests used for tracking free groundwater level of the first aquifer
    Autorzy:
    Gańko, M.
    Mieszkowski, R.
    Gańko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2062088.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda georadarowa (GPR)
    metoda tomografii elektrooporowej (ERT)
    zwierciadło wody podziemnej
    piezometr
    ground penetrating radar
    electrical resistivity tomography ERT
    groundwater level
    piezometer
    Opis:
    W artykule zaprezentowano ocenę możliwości zastosowania metody georadarowej i tomografii elektrooporowej w rozpoznaniu hydrogeologicznym płytkich wód podziemnych. Podjęto próbę wydzielania warstw geologicznych, wyznaczania głębokości do zwierciadła wód podziemnych, oraz określono czynniki mające wpływ na dokładność rozpoznania.
    The paper presents the appraisal of Ground-Penetrating Radar (GPR) tests and Electrical Resistivity Tomography (ERT) tests used in the hydrogeological exploration of shallow groundwater level. An attempt was made to identify geological layers and determine the distance downward to the groundwater level.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2013, 456 Hydrogeologia z. 14/1; 161--166
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geofizyczne monitorowanie procesu podziemnego zgazowania węgla brunatnego
    Geophysical monitoring of the underground brown coal gasification
    Autorzy:
    Wojciechowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/394111.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
    Tematy:
    podziemne zgazowanie
    węgiel brunatny
    geofizyka
    tomografia elektrooporowa
    geofizyka otworowa
    magnetotelluryka
    underground coal gasification
    lignite
    geophysics
    monitoring
    cross borehole
    electrical resistivity tomography
    magnetotellurics
    Opis:
    Z powodu bezszybowego dostępu do złoża skuteczne przeprowadzenie procesu podziemnego zgazowania węgla brunatnego wymaga ciągłego monitorowania geofizycznego. Odpowiada ono za identyfikację położenia frontu zgazowania, modelowanie powstałej kawerny, określenie wpływu gazogeneratora na warstwy nadkładu i osiadanie terenu, jak również pomaga w wykryciu przypuszczalnych ucieczek gazu. Należy wspomnieć, że środowisko naukowe nie wypracowało optymalnego i standaryzowanego systemu monitorowania procesu podziemnego zgazowania węgla brunatnego. Niniejszy artykuł skupia się na wyborze metody obserwacji zjawiska zgazowania dopasowanej do warunków geologicznych towarzyszących polskim węglom brunatnym. Rozpatrywana technologia zgazowania dedykowana jest przede wszystkim pozabilansowym, zawodnionym i zapiaszczonym pokładom węgla brunatnego, występującym w sąsiedztwie utworów ilastych, które za zadanie mają stanowić izolację dla planowanego georeaktora. Wybór metody opiera się na charakterystycznych warunkach panujących w okolicy gazogeneratora, które wywołują lokalne anomalie geofizyczne. Warunki te to przede wszystkim oddziaływanie termiczne gazogeneratora, które wpływa na przewodnictwo elektryczne, porowatość, przepuszczalność, gęstość, czy prędkość rozchodzenia się fal. W efekcie jako najbardziej perspektywiczną metodę wybrano tomografię elektrooporową, która umożliwia niemalże automatyczne monitorowanie procesu. Zaproponowano również metodykę prowadzenia badań, dopasowaną do najbardziej perspektywicznych technologii podziemnego zgazowania węgla brunatnego.
    Effective implementation of the brown coal underground gasification process requires continuous geophysical monitoring due to the shaft free access to deposits. Geophysical monitoring is responsible for identifying the gasification front location, modeling formed caverns, determining the impact of the gasifier at layers of overburden and subsidence, as well as helping to detect possible gas escapes. It should be noted that the scientific community did not develop optimal and standardized systems of brown coal underground gasification monitoring. This paper is focused on selecting the gasification monitoring method adapted to the geological conditions accompanying the Polish brown coals. The considered gasification technology is primarily dedicated to off-balance sheet, water-logged and gritty decks of brown coal, occurring near the loams designed to provide insulation for the planned gasifier. The method choice is based on the specific conditions prevailing in the gasifier area, which cause local geophysical anomalies. These conditions are primarily the thermal impact of gasifier which affects the electrical conductivity, porosity, permeability, density, and the waves propagation speed. As a result, electrical resistivity tomography was chosen as the most perspective method which allows for an almost automatic monitoring process, thus it allows the gasifier’s impact on the surroundings to be observed at a relatively low cost. The research methodology, adapted to the most promising technology of brown coal underground gasification was also proposed.
    Źródło:
    Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2016, 93; 75-82
    2080-0819
    Pojawia się w:
    Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania geofizyczne wałów przeciwpowodziowych metodą tomografii elektrooporewej : przykłady z Warszawy i okolic
    Geophysical investigation of flood embankments using electrical resistivity tomography : examples from Warsaw and surroundings
    Autorzy:
    Kamiński, M.
    Zientara, P.
    Krawczyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075287.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    wały przeciwpowodziowe
    metoda elektrooporowa
    naturalne zagrożenia
    badania geologiczne
    ocena ryzyka powodziowego
    flood embankments
    electrical resistivity tomography
    natural hazard
    geological research
    flood risk assessment
    Opis:
    The spring floods in 2010 and 2014 yr have caused many weaknesses and interrupts of embankments. Especially a flood from 2010 was the greatest cataclysm written down within a dozen or so years in Poland. Financial losses arising from her reason are huge and amount to a few billion zlotys. The considerable part of these losses is associated with flooding areas located in valleys of rivers as a result of the break flood banks. The embankments which were to protect floodplains in many cases did not fulfil their role. In the article results of geophysical investigation using electrical resistivity tomography of chosen fragments of flood banks from Warsaw and surroundings is presented. The research was conducted in two areas of Vistula river valley. The first area included the fragment of embankment alongWa³Miedzeszyñski street in the area of Fieldorf street (Warsaw district Goc³aw). The other fragment of flood bank was in surroundings of Dziekanowskie Lake in Warsaw suburb £omianki.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 2; 114--120
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inwersyjne obrazowanie oporu w rejonie złoża Zn-Pb Zawiercie Źródłem informacji na temat budowy geologicznej
    Application of electrical resistivity tomography (ERT) in the Zawiercie Zn-Pb ore area as a source of information on the geological structure
    Autorzy:
    Cabała, J.
    Jochymczyk, K.
    Poręba, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074512.pdf
    Data publikacji:
    2007
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    inwersyjne obrazowanie oporu
    geofizyczny pomiar
    złoża w rejonie Zn-Pb Zawiercie
    Polska
    electrical resistivity tomography
    geophysical survey
    Zawiercie Zn-Pb ore deposits
    Polska
    Opis:
    The depletion of Zn-Pb ores in developed mining areas and the increase in metal prices have resulted in the need to search for new deposits which have not been exploited yet. A project of drilling new exploratory boreholes should be preceded by an interpretation of archival geological data. To obtain the most valuable information on the geological structure leading to its plausible interpretation, it seems to be purposeful and advisable to apply some geophysical methods that are reasonably cheap in comparison with others. The method of electrical resistivity tomography, which in this research uses two of many measurement protocols such as Schlumberger array and dipole-dipole array, is particularly useful. Computer interpretation of geophysical results allows a high resolution 2D and 3D geoelectrical model of rock mass to be created. The study was carried out using the multi-electrode Lund Imaging System manufactured by ABEM, Sweden. In order to evaluate the practical application of this method, Zawiercie Zn-Pb ore deposits were chosen as the area used in previous scientific research. Taking into account mineralization in its economic aspect, the deposits occur at relatively shallow depths of 50-120 m. In the investigated region, the Triassic carbonate formation overlays the Devonian rocks. The Keuper low-resistance clay, occurring on the surface, provides a very good electrical contact between an electrode and the soil. This is why there are favourable measurement conditions in this area. The boundaries between the Keuper, Devonian and Triassic formations are clearly noticeable in the resistivity cross-sections obtained. On the basis of the ERT results, it is possible to locate faulting zones as well as karst systems. One of the profiles clearly shows the occurrence of a low-resistance anomaly correlated with Zn-Pb mineralization, which was confirmed by borehole surveys. However, this early stage of the research with the use of the ERT method cannot unequivocally identify the ore body, particularly as it was conditioned by the limited depth of prospecting.
    Źródło:
    Przegląd Geologiczny; 2007, 55, 10; 380-386
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ lokalnej, przypowierzchniowej budowy geologicznej na deformacje powierzchni terenu w warunkach podziemnej eksploatacji górniczej
    The impact of local surface geological structure on ground deformation under the conditions of underground mining exploitation
    Autorzy:
    Niedojadło, Z.
    Piwowarski, W.
    Mościcki, W.
    Sopata, P.
    Stoch, T.
    Bania, G.
    Ćwiklik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/165213.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Górnictwa
    Tematy:
    deformacje powierzchni terenu
    uszkodzenia budynków
    budowa geologiczna
    badania geofizyczne
    tomografia elektrooporowa
    land surface deformations
    building damages
    geological structure
    geophysical research
    electrical resistivity tomography
    Opis:
    W publikacji przedstawiono przypadek znaczącej deformacji terenu wywołanej podziemną eksploatacją górniczą, który nie znajduje wytłumaczenia w standardowym modelu zachowania się górotworu. Przyczynę powstania tak silnie destrukcyjnych deformacji należy upatrywać w występującej lokalnie specyficznej budowie geologicznej. Deformacje stwierdzone zostały pomiarami geodezyjnymi prowadzonymi na fragmencie sieci obserwacyjnej zlokalizowanej nad polem górniczym. Powiązanie powstałych na powierzchni terenu deformacji z budową geologiczną możliwe było dopiero po przeprowadzeniu szczegółowych badań geofizycznych. Wyniki zarówno pomiarów geodezyjnych, jak i geofizycznych zostały zaprezentowane i opisane w artykule.
    This publication presents the case of land deformations with a strong, destructive impact which cannot be explained based on standard, model behaviour of the rock mass, and the land surface under the conditions of the impact of the underground mining exploitation. The reason for this type of deformation in the case described should be sought in a special geological structure which occurs locally. The deformations were found with the use of geodetic surveys, conducted in the section of the observation network located over the mining field. It was possible to connect the deformations on the land surface with the geological structure only after the detailed geophysical research had been conducted. The results of both the geodetic and geophysical measurements are presented and described in this publication.
    Źródło:
    Przegląd Górniczy; 2016, 72, 1; 18-26
    0033-216X
    Pojawia się w:
    Przegląd Górniczy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie badań konduktometrycznych z użyciem inwersji 1D, jako narzędzia do kartowania przestrzennego przypowierzchniowych warstw geologicznych
    Application of ground conductivity meter data for mapping of geological subsurface layers with the use of 1D inversion
    Autorzy:
    Czarniak, P.
    Pacanowski, G.
    Sobótka, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075715.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    mierniki przewodności elektrycznej
    GCM
    tomografia elektrooporowa
    ERT
    rozwój innowacji drogowych
    RID
    inwersja 1D
    Ground Conductivity Meters
    electrical resistivity tomography
    1D inversion
    Opis:
    This article presents the results obtained from geophysical measurements as a supplement to and refinement of geological information obtained from engineering geological studies for the newly constructed highways. The research was conducted using two geophysical methods: Ground Conductivity Meters (GCM) and Electrical Resistivity Tomography (ERT). The above measurements were made on three research fields located along the planned express road S-19 (Kraśnik-Janów Lubelski section). These areas were selected due to the large amount of available archival data and varied geological conditions. The publication focuses primarily on the presentation of the results obtained using the very fast and extremely efficient GCM method. By processing GCM data, using Laterally Constrained Inversion (LCI) and Spatially Constrained Inversion (SCI) algorithms, the values ofelectrical resistivity of the surveyed centers were derived. The results are presented in the form of cross-sections and maps of electrical resistivity from different depths, which were collated and compared with the results from another geophysical method, ERT. These examples show that the use of inversion has a significant impact on the refinement of geological boundaries between layers of different electrical resistivities. Thanks to the correlation of geophysical data with boreholes and engineering geological probes, detailed models of the geological structure of the analyzed areas were elaborated, which are necessary for the selection of appropriate solutions for the construction and modernization of road infrastructure.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 803--810
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza porównawcza wyników badań geofizycznych i geologiczno inżynierskich na potrzeby ustalania modelu geologicznego – na przykładzie poligonu badawczego Kępa Włocławska
    Comparative analysis of the results of geophysical and geological- -engineering methods on the example of Włocławek River-islet investigative testing ground
    Autorzy:
    Gańko, M.
    Mieszkowski, R
    Gańko, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075284.pdf
    Data publikacji:
    2015
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    georadar
    GPR
    pionowe sondowanie elektrooporowe
    VES
    tomografia elektrooporowa
    ERT
    refrakcja
    sejsmika
    sondowania statyczne
    CPT
    ground penetrating radar
    vertical electrical sounding
    electrical resistivity tomography
    refraction
    seismics
    cone penetration test
    Opis:
    The paper present the correlation of geophysical method with geological-engineering data. As an experimental testing ground, a terrain with simple soil conditions was selected, located on the W³oc³awek River-islet. This is a large alluvial area on the Vistula River, downstream of the W³oc³awek Dam. In the study, the following geophysical methods were applied: vertical electrical sounding (VES), refraction seismic, ground penetrating radar (GPR) and electrical resistivity tomography (ERT). The evaluation of geological-engineering conditions was executed by using the following methods: drilling, cone penetration test (CPT sounding), measurements of the underground water level and macroscopic and laboratory analyses of soils samples. The results obtained were described and presented in a graphic form.
    Źródło:
    Przegląd Geologiczny; 2015, 63, 2; 121--130
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie przypowierzchniowych badań geofizycznych w rozpoznaniu budowy geologicznej na przykładzie stref osuwiskowych w Karpatach
    Application of near-surface geophysical survey for recognition of the geology of landslide areas in the Carpathians - a case study
    Autorzy:
    Ostrowski, S.
    Rybak-Ostrowska, B.
    Lasocki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075010.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    near-surface geophysics
    electrical resistivity tomography ERT
    ERT
    seismic refraction profiling
    landslide
    Outer Carpathians
    przypowierzchniowa geofizyka
    tomografia elektrooporowa ERT
    sejsmiczne profilowanie refrakcyjne
    osuwisko
    Karpaty zewnętrzne
    Opis:
    The paper presents three examples of application of geophysical surveys carried out by the PBG Ltd. for the recognition of internal structure, geological background and mechanical properties of near- -surface rock medium at major landslides in the Polish Outer Carpathians. Geophysical data were used for developing an accurate geological model of the landslides. Geological features that cannot be detected by other means, e.g. faults in bedrock, and exact location and shape of the shear plane were delineated in two-dimensional mode on the sections.
    Źródło:
    Przegląd Geologiczny; 2013, 61, 1; 67--73
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena możliwości zastosowania metody georadarowej i elektrooporowej do identyfikacji rozluźnionych stref gruntów niespoistych
    Evaluation of the applicability of GPR and resistivity methods for identifying loose zones in non-cohesive soils
    Autorzy:
    Mieszkowski, R.
    Zawrzykraj, P.
    Żmudzin, D.
    Wójcik, E.
    Popielski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075707.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    metoda georadarowa
    GPR
    metoda elektrooporowa
    ERT
    sondowanie dynamiczne
    DPL
    zagęszczenie nasypu
    wskaźnik zagęszczenia
    ground penetrating radar method
    electrical resistivity tomography method
    dynamic sounding
    relative density
    degree of compaction
    Opis:
    The results of the possibility of geophysical methods application (such as geoelectrical ones, including ground penetrating radar and electrical resistivity tomography) to identify areas of loose sands were presented in the article. Registered anomalies obtained from geophysical survey have been verified by geological and engineering tests (drillings and dynamic probing). Measurements were carried out along the part of the lateral earth dam, consisting of man-made soils with a thickness of approximately 7 m and underlying alluvial medium grained sands. The results obtained from the geophysical survey and direct assessment of density by means of dynamic probing allowed to demonstrate the relationship between a specific type of geophysical anomalies and the density of non-cohesive man-made soils.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 10/2; 779--784
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identyfikacja systemu krążenia wód podziemnych na wyspie Wolin
    Identification of groundwater flow system of the Wolin Island
    Autorzy:
    Gurwin, J.
    Krawiec, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2062657.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    system krążenia wód
    ingresja wód słonych
    skład izotopowy wód podziemnych
    modelowanie numeryczne
    badania elektrooporowe
    tomografia elektrooporowa
    ERT
    groundwater flow system
    saltwater intrusion
    groundwater isotopic composition
    numerical modelling
    resistivity research
    electrical resistivity tomography
    Opis:
    W pracy przedstawiono wyniki badań modelowych i geofizycznych z obszaru wyspy Wolin. Wyniki obliczeń numerycznego modelu filtracji wykazały, że zasilanie wód podziemnych zachodzi głównie w północnej i centralnej części wyspy, zgodnie z wyniesieniem Pasma Wolińskiego (góra Grzywacz – 116 m n.p.m.). Układ krążenia jest dostosowany do bazy drenażu, którą stanowią: na północy Morze Bałtyckie, na wschodzie rzeka Dziwna, na zachodzie Świna, a na południu Zalew Szczeciński. Dopływ do obszaru badań jest lokalnie formowany w wyniku infiltracji wód powierzchniowych, co może mieć miejsce zwłaszcza w rejonach funkcjonowania dużych ujęć. Największa eksploatacja dotyczy rejonu Międzyzdrojów i Wolina oraz dwóch ujęć dla Świnoujścia w zachodniej części wyspy. Właśnie w zachodniej części wyspy (rejon ujęcia Odra) zachodzi infiltracja wód powierzchniowych z Zalewu Szczecińskiego/ Świny. Na podstawie przeprowadzonych badań elektrooporowych zlokalizowano strefy ascenzji i ingresji wód o podwyższonej mineralizacji. Zmniejszający się pobór wód podziemnych na tym obszarze w ostatnich kilkunastu latach oraz racjonalna gospodarka wodami słodkimi zmniejszyły stopień zagrożenia dopływem wód słonych w wyniku ingresji i ascenzji.
    This paper presents the results of geophysical investigations and groundwater modelling from the Wolin Island. The simulation results of the numerical model have shown that groundwater recharge occurs mainly in the northern and central parts of the island (Mt. Grzywacz – 116 m a.s.l). The groundwater flow system is adapted to the base level of groundwater drainage, which is: Baltic Sea in the north, Dziwna River in the east, Świna River in the west, and the Szczecin Lagoon in the south. Inflow to the research area is locally formed as a result of infiltration of surface water, which may take place especially in the areas of operation of major groundwater intakes. The major water intakes are located in Międzyzdroje and Wolin, and additional two in the western part of the Wolin Island for supplying the town of Świnoujście. Just in this extreme western part of the island – within the area of groundwater intake Odra, surface water infiltrates into the shallow aquifer from the Szczecin Lagoon and Świna River. Based on the geoelectrical imaging there was located a salt water intrusion and ascension of highly mineralized water. A decrease in consumption of groundwater in this area in recent years and the rational management of freshwater resources reduced the level of risk as a result of ingression and ascension of saline water.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2012, 451 Hydrogeologia z. 13; 53--61
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie metod geofizycznych do rozpoznania powierzchni stropowej gruntów słabo przepuszczalnych oraz wyznaczenia stref rozluźnienia w korpusie zapory ziemnej
    The use of geophysical methods to identify the roof of cohesive soils and the designation of zones of suffosion relaxation in the body of an earth dam
    Autorzy:
    Mieszkowski, R.
    Kowalczyk, S.
    Barański, M.
    Szczepański, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/395069.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
    Tematy:
    tomografia elektrooporowa ERT
    georadar (GPR)
    metoda sejsmiki fal powierzchniowych CSWS/SASW
    sejsmika refrakcyjna
    zapora ziemna
    electrical resistivity tomography
    ground penetrating radar
    surface wave seismic
    seismic refraction
    earth dam
    Opis:
    Metody geofizyczne wykorzystywane jako badania uzupełniające przy badaniu podłoża umożliwiają ocenę jakościową zmienności warunków gruntowych w strefie przypowierzchniowej. Informacje te są szczególnie istotne w monitoringu podłoża budowli hydrotechnicznych. W artykule przedstawiono badania geofizyczne wykonane w rejonie zapory ziemnej, mające na celu wskazanie miejsc rozluźnienia gruntów w obrębie zapory oraz określenie głębokości stropu gruntów spoistych występujących pod zaporą. Zastosowano metody: tomografii elektrooporowej (ERT), georadarową (GPR), sejsmiki refrakcyjnej, dające dwuwymiarowy obraz zmian fizycznych w ośrodku oraz sejsmikę fal powierzchniowych - Continuous Surface Wave System (CSWS), dzięki której otrzymano profil 1D parametrów sztywności ośrodka w punkcie pomiarowym. Opierając się na rezultatach badan ERT oraz sejsmice refrakcyjnej, odniesione do danych z wierceń, opracowano mapę powierzchni stropowej gruntów słabo przepuszczalnych. Anomalie uzyskane w wyniku interpretacji przeprowadzonych badań geofizycznych pozwoliły na oszacowanie stref rozluźnienia gruntu, które mogą być wywołane procesem sufozji. Zaobserwowane anomalie, na wybranych obszarach, zostały skorelowane z wierceniami oraz sondowaniami statycznymi (CPT), co pozwoliło na zrealizowanie postawionego celu oraz sformułowanie wniosku, że rozkład stref rozluźnienia gruntów oraz zwiększonego przepływu wód gruntowych stwarza zagrożenie dla stateczności korpusu zapory.
    Geophysical methods used as a complementary survey in the investigation of substrate allow for a qualitative assessment of the lateral variability of ground conditions in the near surface zone. They can also permit evaluation of the vertical variation of ground conditions. Such information is particularly important in monitoring the substratum of hydrotechnical engineering constructions. This article presents the geophysical surveys carried out in the area of an earth dam in order to identify places of relaxation of soils within the dam, as well as to determine the depth of the roof of cohesive soils occurring under the dam. The following methods were used: Electrical Resistivity Tomography (ERT), Ground Penetrating Radar (GPR), seismic refraction (providing a two-dimensional image of the physical changes in the medium), and surface wave seismic - Continuous Surface Wave System (CSWS) used together with Spectral Analysis of Surface Waves (SASW). The last method made it possible to analyze the distribution of the stiffness parameters of the medium at the measuring point. Based on the results of ERT studies and seismic refraction, referring to drilling data, a map of the roof surface of cohesive soils was developed. Anomalies identified in the geophysical studies made it possible to estimate the relaxation zone of the soil that could be caused by a process of suffosion. The observed anomalies in selected areas were correlated with drilling and Cone Penetration Testing (CPT), which allowed the completion of the pursued objective and to draw conclusions for the whole dam.
    Źródło:
    Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2014, 86; 167-180
    2080-0819
    Pojawia się w:
    Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Saltwater monitoring with long-electrode electrical resistivity tomography
    Monitoring wód zasolonych przy użyciu metody tomografii elektrooporowej długich elektrod
    Autorzy:
    Voß, T.
    Ronczka, M.
    Gunther, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2062349.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    electrical resistivity tomography ERT
    long electrodes
    saltwater monitoring
    environmental safety of CO2-storage
    complete electrode model
    tomografia elektrooporowa
    długie elektrody
    monitoring wód zasolonych
    bezpieczeństwo środowiskowe
    magazynowanie CO2
    kompletny model elektrodowy
    Opis:
    Since 2011 the German well logging company Bohrlochmessung – Storkow GmbH and the German Leibniz Institute for Applied Geophysics are engaged in the joint research project ‘SAMOLEG – Saltwater monitoring with long electrode geoelectrics’ (electrical resistivity tomography – ERT), with a grant of the German Federal Ministry of Education and Research. The basic concept of SAMOLEG is to use the existing networks of old steel-cased groundwater measuring wells as current injection and voltage electrodes for electrical resistivity tomography measurements in order to obtain deeper access to salt water bearing aquifers than with conventional surface ERT. Permanent wiring of several old wells would give the opportunity to conduct cost-efficient ERT measurements for saltwater monitoring with a high temporal sampling on sites that are threatened by saltwater rise due to anthropogenic (e.g. natural gas /CO2-storage, water production from wells) or natural causes (e.g. decreasing precipitation due to climate change). First model tank and numerical modelling experiments reveal different sensitivities of ‘equal-length’ and ‘unequal-length’ combinations of wells to rising or laterally inflowing saltwater. Field measurements on a test site in Eastern Brandenburg with known groundwater salinization demonstrate the monitoring potential of the SAMOLEG concept.
    Od 2011 roku niemieckie przedsiębiorstwo geofizyki otworowej Blm–storkowgmbh wspólnie z Instytutem Leibniza ds. Geofizyki Stosowanej są zaangażowane w projekt badawczy pt. „SAMOLEG – Monitorowanie zasolenia wód podziemnych za pomocą elektrooporowej metody długich elektrod” (tomografia elektrooporowa) – grant Niemieckiego Federalnego Ministerstwa Edukacjii Badań Naukowych. Zasadniczą ideą projektu SAMOLEG jest wykorzystanie istniejącej sieci starych stalowych studni i piezometrów jako elektrod prądowych i pomiarowych w technice tomografii elektrooporowej, w celu dostępu do głębszych zasolonych poziomów wodonośnych, niż mogłoby to mieć miejsce, bazując na konwencjonalnych powierzchniowych metodach elektrooporowych. Trwałe okablowanie kilku studni w wybranej sieci badawczej dałoby możliwość przeprowadzania częstego niskonakładowego monitoringu zasolenia wód w miejscach, które z przyczyn antropogenicznych (np. Magazynowanie gazu lub CO2, zintensyfikowane ujmowanie wód podziemnych) oraz naturalnych (np. Niewielkie opady atmosferycznewywołane zmianami klimatycznymi) zagrożone są podniesieniem się poziomu wód zasolonych. Pierwsze badania laboratoryjne oraz modelowanie numeryczne ujawniły zmienne czułości kombinacji elektrod o równej i różnej długości względem wznosu lub bocznego dopływu wód, natomiast pomiary terenowe we wschodniej Brandenburgii, na polu testowym o znanym zasoleniu wód podziemnych, potwierdziły zakładany potencjał monitoringowy koncepcji SAMOLEG.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2013, 456 Hydrogeologia z. 14/2; 621--626
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applying Electrical Impedance Tomography Techniques for Detection of Decay Inside Trees
    Autorzy:
    Kieu, Duy Thong
    Vu, Hong Duong
    Nguyen, Thi Thu Hang
    Nguyen, Thu Thuy
    Powiązania:
    https://bibliotekanauki.pl/articles/2020936.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    electrical impedance tomography
    tree investigation
    resistivity
    conductivity
    impedancja
    przewodnictwo
    opór elektryczny
    Opis:
    Trees play a critical role in creating green spaces in public areas such as streets, parks, schools, offices. Over time, the trees often get pests and diseases, and then rotten trees can break. To care for and conserve the trees, it is necessary to determine the condition inside the trunk, especially the possibility of having a hollow or not. Wood decay, modifications of moisture and ion content, density due to biotic and abiotic stress agents of water extremity, salinity, and infection strongly change (di-) electrical properties of wood. Hence, we propose to use electrical impedance tomography to detect the change in electrical properties inside the trees that can link to wood decay. In electrical impedance tomography, an array of electrodes is attached around the tree trunk, and small alternating currents are injected via these electrodes, so the resulting voltages are measured. Processing the data, we can construct the spatial distribution of impedance (or resistivity) of the object. In this work, we will present the preliminary results of our group research. We will show theoretical forward modeling results, followed by laboratory experiments and real data application. The results illustrate that electrical impedance tomography can be useful to define several decay scenarios inside the trees.
    Źródło:
    Inżynieria Mineralna; 2021, 2; 31--40
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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