In:
Russian Journal of Earth Sciences, Geophysical Center of the Russian Academy of Sciences
Abstract:
In 2023, monitoring geophysical studies were carried out using the electrical resistivity tomography (ERT) method along three profiles that cross the strike zone of the Issyk-Ata fault in the transverse direction. A detailed study was carried out of the observed variations in apparent electrical resistivity, which characterize the change in the electrical properties of the upper part of the Earth's crust section with a 40-minute discretization in time. Using the analysis of difference pseudo-sections of apparent resistivity, constructed based on the results of ERT monitoring, the most informative pseudo-depth interval from the point of view of geoelectric activity was determined for all three monitoring profiles. Accordingly, for a pseudo-depth of 24 m on each monitoring profile, an assessment was made of the geodynamic activity of these sections of the Issyk-Ata fault based on an analysis of the magnitude of two parameters: the amplitude of apparent resistivity variations and the correlation coefficient of electrical resistivity variations with lunar-solar solid tides. High values of these parameters, in our opinion, determine the location of modern active fault zones.
Type of Medium:
Online Resource
ISSN:
1681-1208
,
1681-1208
Uniform Title:
Мониторинговые электротомографические исследования зоны Иссык-Атинского разлома (Северный Тянь-Шань)
DOI:
10.2205/2023ES000881
Language:
English
,
Russian
Publisher:
Geophysical Center of the Russian Academy of Sciences
Publication Date:
2023
detail.hit.zdb_id:
2089792-3
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