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Wyszukujesz frazę "geological basement" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Dynamika przemieszczeń wybranych osuwisk w Karpatach
The dynamics of displacements of selected landslides in the Carpathians
Autorzy:
Warmuz, Bartłomiej
Nescieruk, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2075947.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
osuwiska
monitoring instrumentalny
opad atmosferyczny
otwór geologiczny
andslides
instrumental monitoring
precipitation
geological basement
Opis:
The paper presents the activity ofselected landslides where instrumental monitoring has been carried out within the Framework of Landslide Counteracting System (SOPO). The temporal relationships between subsurface dynamics (displacements) and geological structure with respect to atmospheric precipitation are discussed. In order to expose these relationships, the landslides were divided into two groups: the first one is located in the areas where the bedrock is made up of flysch formations with the predominance of clay rocks. The second group is located in areas with the prevalence of sandstones in the bedrock. The analysis of the 10-year record shows that, in the areas where the geological structure is dominated by clays, the landslides present continuous activity with displacements not exceeding a dozen mm/year. In the areas where in the geological foundation (bedrock) sandstones are dominated, landslide movements were usually more impulsive. Dislocations were recorded mainly after intense, long-lasting precipitation or heavy rainstorms. In extreme situations the large displacements caused total destruction of the measuring column.
Źródło:
Przegląd Geologiczny; 2019, 67, 5; 326--331
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geophysical Survey of Basement Complex Terrain Using Electrical Resistivity Method for Groundwater Potential
Autorzy:
Adeeko, Tajudeen O.
Samson, Damilola O.
Umar, Medina
Powiązania:
https://bibliotekanauki.pl/articles/1077235.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Basement
Electrical resistivity
Geological materials
Groundwater
Schlumberger
Opis:
A geophysical survey of basement complex using electrical resistivity method was carried out so as to provide geological and geophysical information on the different subsurface features. The sought-for parameters include thickness, depth, basement for groundwater potential and aquifer protective capacity. The acquired data were process using Win-Resist software and surfer 8, and the result was then analyzed and interpreted. Accordingly, 3-4 geoelectrical layers within the subsurface delineate the area: top soil, lateritic layer, weathered/fractured layer and fresh rock. Resistivity values of the top soil range between 55.5 mΩ to 749.7 mΩ, with average thickness of 0.4 m to 3.6 m, while the lateritic layer ranges between 153.3 mΩ to 862.0 mΩ, with average thickness of 4.5 m to 20.7 m, the weathered/fractured layer in turn ranges between 15.6 mΩ to 698.9 mΩ, with average thickness of 7.7 m to 55.2 m, and the fresh rock ranges between 13.4 mΩ to 5102 mΩ, with infinite homogeneous half space. Over all, the longitudinal conductance of the overburden units range from 0.147 mhos to 0.957 mhos and the overburden is thick enough for groundwater exploration activities. The results provide reasonably information that the aquifer units are weathered/fractured layers with a significant groundwater potential that is free of contamination.
Źródło:
World News of Natural Sciences; 2019, 23; 154-165
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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