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    Wyświetlanie 1-5 z 5
    Tytuł:
    Application of ground penetrating radar method combined with sedimentological analyses in studies of glaciogenic sediments in central Poland
    Autorzy:
    Lejzerowicz, Anna
    Wysocka, Anna
    Kowalczyk, Sebastian
    Powiązania:
    https://bibliotekanauki.pl/articles/2025229.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ground penetrating radar
    radar facies
    glaciogenic deposits
    sedimentological studies
    central Poland
    Opis:
    GPR method is perfectly suited for recognizing of sedimentary facies diversity in shallowly occurring sediments if there is a contrast of electrical properties between and/or within each layer. The article deals with the issue of the correlation between GPR surveys results and sedimentological analyses. As a result of this correlation a conceptual model of depositional systems of studied areas was developed. Studies were performed in two areas located in central Poland, where glacial deposits formed in the Middle Polish (Saalian) Glaciation are present. The study was based on 49 sediment samples and 21 GPR profiles. Analyses of lithofacies as well as granulometric and mineralogical composition of deposits of collected samples were carried out, showing the diversity of glacial deposits in both study sites. During GPR measurements shielded antenna with a frequency of 500 MHz was used which allowed high-resolution mapping of the internal structure of deposits and to identify four characteristic radar facies. Correlation of GPR profiles with point, one-dimensional sedimentological studies allowed the unambiguous interpretation of the GPR image and draw conclusions about the formation environment of individual units. Geophysical and sedimentological data obtained during study provide a new and detailed insight into selected glacial deposits in central Poland.
    Źródło:
    Studia Quaternaria; 2018, 35; 103-119
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    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:
    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:
    Applicability of ground penetrating radar on desert archaeolog ical sites: a case studyfrom the Saqqara necropolis in Egypt
    Autorzy:
    Welc, Fabian
    Mieszkowski, Radosław
    Kowalczyk, Sebastian
    Trzciński, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/2027389.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ground pen e trat ing ra dar (GPR)
    ar chae o log i cal site
    Saqqara
    Opis:
    This pa per pres ents the pre lim i nary re sults of ground pen e trat ing ra dar sound ing ap plied at the desert ar chae o log i cal site in Saqqara (Egypt). The sur vey was car ried out in 2012 within a pro ject re al ized by In sti tute of Ar chae ol ogy, Cardi nal Stefan Wyszyñski Uni ver sity in War saw and the Fac ulty of Ge ol ogy, Uni ver sity of War saw. One of the key aims of the re search was test ing the ap pli ca tion of ground pen e trat ing ra dar to non-in va sive sur veys of desert ar chae o log i calsites. Radargrams ob tained for area of so called the Dry Moat chan nel sur round ing the Step Pyr a mid com plex have shown the geo log i cal struc ture of its fill ing. It com prises among oth ers de bris-sand con glom er ate of diluval or i gin char ac ter ized by a sig nif i cant con tent of the clay frac tion and clay min er als. Such lithological con tent strongly at ten u -ate the prop a ga tion of EM waves, re strict ing the depth range of the GPR sur vey. The con ducted geo phys i cal prospection west to the Step Pyr a mid in Saqqara has con firmed the high ap pli ca bil ity of the GPR method in non-in va sive stud ies of vast ar chi tec tural struc tures, such as the mon u men tal ditch sur round ing the Step Pyr a mid known as the Dry Moat. It should sum ma rised that high hor i zon tal res o lu tion ob tained dur ing GPR survey is a re sult of lo cal geo log i cal struc ture of the searched area, i.e. strong lithological con trast of the sed i ments fill ing the Dry Moat, which, de pend ing on their min er al og i cal com po si tion.
    Źródło:
    Studia Quaternaria; 2014, 31; 133-141
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The intramontane Orava Basin - evidence of large-scale Miocene to Quaternary sinistral wrenching in the Alpine-Carpathian-Pannonian area
    Autorzy:
    Ludwiniak, Mirosław
    Śmigielski, Michał
    Kowalczyk, Sebastian
    Łoziński, Maciej
    Czarniecka, Urszula
    Lewińska, Lena
    Powiązania:
    https://bibliotekanauki.pl/articles/138722.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Orava Basin
    Central Carpathian Palaeogene Basin
    structural analysis
    strike-slip related basin
    transrotational basin
    joint pattern analysis
    Western Carpathians
    Kotlina Orawska
    paleogeński basen centralno-karpacki
    paleogeńskiego basen Karpat centralnych
    analiza strukturalna
    basen przesuwczy
    basen transrotacyjny
    Karpaty Zachodnie
    Opis:
    The Carpathian Orava Basin is a tectonic structure filled with Neogene and Quaternary deposits superimposed on the collision zone between the ALCAPA and European plates. Tectonic features of the south-eastern margin of the Orava Basin and the adjoining part of the fore-arc Central Carpathian Palaeogene Basin were studied. Field observations of mesoscopic structures, analyses of digital elevation models and geological maps, supplemented with electrical resistivity tomography surveys were performed. Particular attention was paid to joint network analysis. The NE-SW-trending Krowiarki and Hruštinka-Biela Orava sinistral fault zones were recognized as key tectonic features that influenced the Orava Basin development. They constitute the north-eastern part of a larger Mur-Mürz-Žilina fault system that separates the Western Carpathians from the Eastern Alps. The interaction of these sinistral fault zones with the older tectonic structures of the collision zone caused the initiation and further development of the Orava Basin as a strike-slip-related basin. The Krowiarki Fault Zone subdivides areas with a different deformation pattern within the sediments of the Central Carpathian Palaeogene Basin and was active at least from the time of cessation of its sedimentation in the early Miocene. Comparison of structural data with the recent tectonic stress field, earthquake focal mechanisms and GPS measurements allows us to conclude that the Krowiarki Fault Zone shows a stable general pattern of tectonic activity for more than the last 20 myr and is presently still active.
    Źródło:
    Acta Geologica Polonica; 2019, 69, 3; 339-386
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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