Open AccessAnalysis on the geo-resistivity anomaly at Baoji Seismic Station of the Jiuzhaigou Ms7.0 earthquake
Author(s) -
Yu Sun,
Weichao Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/804/2/022054
Subject(s) - electrical resistivity and conductivity , geology , anomaly (physics) , seismology , geophysics , physics , engineering , condensed matter physics , electrical engineering
According to the geological structure and observation characteristics of Baoji Seismic Station, a variety of methods are used to process and analyze the geo-resistivity data of Baoji Seismic Station from 2014 to 2018, such as the fourier sliding method that removing annual variation, the anisotropic degree method of the geo-resistivity, the normalized monthly rate method and the difference method. The analysis of these geo-resistivity data was used to extract the precursory anomalies of the geo-resistivity at Baoji Seismic station before the Jiuzhaigou Ms7.0 earthquake, obtain the characteristics of the changes in the geo-resistivity data before and after the earthquake, find the possible causes of the data changes, and evaluate the observation efficiency of the geo-resistivity at Baoji Seismic Station.