Deep Geoelectrical Surveys for Gyeongju Area where the Largest Earthquake Recorded by Instruments in Korean Peninsula Occurred
Abstract
Geoelectrical surveys were conducted in the area where the largest earthquake (ML = 5.8, Sep. 12th, 2016) recorded by instruments in Korean Peninsula had occurred. The maximum separation of current poles reached more than 7 km and the results seemed to be shown the resistivity structures to the depth about 2 km at least. The objects of the deep geoelectrical surveys are supplying the near surface resistivity information for the magnetotelluric inversions to the depth of about 20 km and finding the optimizing methods of geoelectrical monitoring more than 6 months in 2019. The preliminary results of geoelectrical surveys showed the resistivities of eastern part of inferred fault are low value of few hundreds ohm-m and the those of western parts are more than about 5,000 ohm-m in the depth around 500 m and more.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMNS11A0589K
- Keywords:
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- 0920 Gravity methods;
- EXPLORATION GEOPHYSICSDE: 0925 Magnetic and electrical methods;
- EXPLORATION GEOPHYSICSDE: 0935 Seismic methods;
- EXPLORATION GEOPHYSICSDE: 0999 General or miscellaneous;
- EXPLORATION GEOPHYSICS