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The application of electrical resistivity tomography (ERT), induced polarization (IP) and electromagnetic conductivity (EMC) methods for the evaluation of technical condition of flood embankment corpus

Cygal A., Stefaniuk M., Kret A., Kurowska M.

Geology, Geophysics and Environment

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2016

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Vol. 42, no. 3

279--287

EN

A series of catastrophic floods that have occurred over the last twenty years in Poland brought an urgent need for taking preventive steps to monitor river embankment conditions. The main problem seems to be the development of efficient (i.e. fast and economical) measurements for controlling the condition of river embankments, because the execution of the full range of geotechnical measurements is both lengthy and costly. In this situation, a cheap and quick geophysical survey has been proposed to undertake this purpose. In this article the results of geophysical surveys are described which were performed using geoelectric and electromagnetic methods along a section of the Vistula embankment, located near the Maniów area in the Małopolska province. According to the archival data, this region is situated in a high-risk flooding zone. Three geophysical methods were used to recognize conditions of the levee: (i) Electrical Resistivity Tomography (ERT), (ii) Induced Polarization (IP) and (iii) Electromagnetic Conductivity (EMC). Geoelectrical measurement results were presented in the form of resistivity and polarization cross-sections. Results of conductivity measurement were presented in the form of plots. These parameters effectively supplement geotechnical testing, providing spatial information about the changes within the embankment and its substrate. It allows the prediction of potentially vulnerable areas to water percolation during flooding.

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Wykorzystanie tomografii elektrooporowej do badania osuwisk : osuwisko „Dzianisz” (południowo-zachodnie Podhale)

Kamiński M., Zientara P., Krawczyk M.

Przegląd Geologiczny

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2014

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Vol. 62, nr 4

198--203

PL

Resistivity tomography is a modern geophysical method is widely used in geological research. It is especially useful in the study of landslides and their bedrock. Such tests were performed on landslide Dzianisz located in the Podhale region. It was established on the right side of the stream Dzianisz. The surviving morphological forms indicate that this is the old landslide. In the field, made one of the geophysical cross-section length of 750 meters. The measurement was made by Wenner. With the known zone of geophysical research slide coluvial material composition and geological structure of the bedrock. The data obtained were compared with earlier results of research, done by Bober (1971). The research results new light on the construction of landslide colluwium.

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Rozpoznanie budowy geologicznej klifu w Jastrzębiej Górze metodą tomografii elektrooporowej pod kątem zagrożenia osuwiskowego

Kamiński M., Krawczyk M., Zientara P.

Biuletyn Państwowego Instytutu Geologicznego

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2012

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nr 452

119--130

PL

Przedstawiono zastosowanie metody tomografii elektrooporowej do rozpoznania budowy geologicznej fragmentu klifu pod kątem zagrożenia osuwiskowego. Klif w Jastrzębiej Górze jest zachodnim przedłużeniem klifu przylądka Rozewie. Rejon badań jest położony w miejscowości Jastrzębia Góra, w okolicy ośrodka szkolno-wypoczynkowego „Bałtyk” przy ulicy Bałtyckiej. Klif w tym rejonie prawie w całości jest zabudowany gabionami. Stwierdzono dużą zmienność litologiczną w rejonie opaski gabionowej (piaski, gliny, iły). Budowa taka przy odpowiednich nachyleniach terenu i zaburzeniach glacitektonicznych sprzyja tworzeniu się osuwisk, zwłaszcza ze względu na obecność zdeformowanych glacitektonicznie utworów jeziornych.

EN

The paper describes the use of electric al resistivity tomography in order to recognize the geological structure of the cliff from the point of view of landslide hazard. The Jastrzębia Góra cliff is the western extension of Rozewie Cape cliff. The study area is located in the Jastrzębia Góra town near a school and recreation center “Bałtyk”. The cliff in the study area is almost entirely built over with gabions. The large variation in lithology in the gabion band vicinity (sand, clay, silt) was stated. This structure with suitable layer slants and glacitectonic deformations is conducive to landslide formation.