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Wyświetlanie 1-4 z 4
Tytuł:
Application of DOI index to analysis of selected examples of resistivity imaging modelsin Quaternary sediments
Autorzy:
Glazer, Michał
Mendecki, Maciej Jan
Mycka, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2027367.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
depth of investiga tion index (DOI)
electric resis tivity tomography (ERT)
resis tivity model
Opis:
In ter pre ta tion of re sis tiv ity cross sec tions may be in many cases un re li able due to the pres ence of ar ti facts left by the in ver sion pro cess. One way to avoid er ro ne ous con clu sions about geo log i cal struc ture is cre ation of Depth of In ves tiga tion (DOI) in dex maps, which de scribe du ra bil ity of pre pared model with re spect to vari able pa ram e ters of in ver - sion. To as sess the use ful ness of this in ter pre ta tion meth od ol ogy in re sis tiv ity im ag ing method over qua ter nary sediments, it has been used to one syn thetic data set and three in ves ti ga tion sites. Two of the study ar eas were placed in the Up per Silesian In dus trial Dis trict re gion: Bytom–Karb, Chorzów–Chorzów Stary; and one in the South ern Pom er a - nian Lake Dis trict across Pi³awa River Val ley. Bas ing on the avail able geo log i cal in for ma tion the re sults show high util ity of DOI in dex in anal y sis of re ceived re sis tiv ity mod els, on which ar eas poorly con strained by data has been des - ig nated.
Źródło:
Studia Quaternaria; 2014, 31; 109-114
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of passive seismic to shallow geological structures in urban areas
Autorzy:
Mendecki, Maciej Jan
Glazer, Michał
Mycka, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2027258.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pas sive seis mic
Re frac tion Microtremor (ReMi)
seis mic noise
Mul ti chan nel Anal y sis of Sur face Waves
(MASW)
Re sis tiv ity Im ag ing (RI)
ur ban area
Opis:
To study the shal low geo log i cal struc ture the Re frac tion Microtremor (ReMi) method was ap plied. This tech nique uses seis mic noise anal y sis where a source of this small vi bra tions is the hu man ac tiv ity e.g.: traf fic, pro duc tion, fac tories. The sur veys were car ried out in se lected ur ban ar eas in the re gion of the Up per Silesian In dus trial Dis trict: Sosnowiec–Pogoñ , Chorzów–Chorzów Stary and Bytom–Karb. Each area is char ac ter ized by the pres ence of nearby roads with a very high traf fic. The re sults of pas sive seis mic (ReMi) were con fronted with data ob tained us ing Mul ti - chan nel Anal y sis of Sur face Waves (MASW) and re sis tiv ity im ag ing (RI). Seis mic sur veys were per formed by ap pa - ra tus PASI with 24 chan nels us ing geo phones of 4.5Hz. The re sults showed that pas sive seis mic can be sat is fac to rily used in such ur ban con di tions. The shal low geo log i cal struc ture in ter preted by seis mic meth ods have been well-cor re - lated with re sis tiv ity stud ies.
Źródło:
Studia Quaternaria; 2014, 31; 115-122
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-method geophysical mapping of ground properties and periglacial geomorphology in Hans Glacier forefield, SW Spitsbergen
Autorzy:
Marciniak, Artur
Osuch, Marzena
Wawrzyniak, Tomasz
Owoc, Bartosz
Dobiński, Wojciech
Glazer, Michał
Majdański, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/16538466.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Arctic
Svalbard
geophysical imaging
periglacial environment
glacial landforms
Opis:
This article presents the results of a geophysical survey from which detailed images of glacial and periglacial landforms and subsurface structures were obtained. Sediments and landforms on newly deglaciated terrain can be used to reconstruct the extent and character of glaciers in the past and add to the understanding of their response to climate and environmental changes. To derive spatial information from complex geomorphological terrain, joint interpretation of three non-intrusive geophysical methods were applied: Electrical Resistivity Tomography (ERT), Ground Penetrating Radar (GPR), and time-lapse Seismic Tomography. These were used to identify subsurface structures in the forefield of the retreating Hans Glacier in SW Spitsbergen, Svalbard. Three main zones were distinguished and described: outwash plain, terminal moraine from the last glacial maximum, and glacial forefield proximal to the glacier front. Geophysical profiles across these zones reveal information on glacio-fluvial sediment thickness and structure, ice thickness and structure, and bedrock topography. The freezing-thawing effect of the active layer has a strong and deep impact, as demonstrated by variations in P-wave velocity in the obtained outcomes. The results are discussed in the context of the current climate in Svalbard. This study provides a snapshot of ground parameters and the current state of the subsurface in southern Spitsbergen. The boundary between sediment-bedrock layers was estimated to be from 5 to 20 m in depth. It is the first such extensive description of periglacial structures in the forefield of the Hans Glacier, utilising the longest ERT profile (1500 m) in Svalbard together with deep GPR and precise seismic tomography.
Źródło:
Polish Polar Research; 2022, 43, 2; 101-123
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Probable two-layered permafrost formation, as a result of climatic evolution in mountainous environment of Storglaciären forefield, Tarfala, Northern Scandinavia
Autorzy:
Dobiński, Wojciech
Glazer, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2042116.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Scandinavia
permafrost evolution
two-layered permafrost
ERT
Źródło:
Polish Polar Research; 2018, 39, 2; 177-209
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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