安徽省数字化地电阻率观测数据的干扰分析与处理方法

Abstract

Abstract: In recent years, many abnormal geoelectrical resistivity data appeared in seismic stations, while magnitude M_S≥3.0 earthquakes have occurred many times in Anhui province. We analyzed annual change characteristics and interference factors of geoelectrical resistivity data in many high quality stations, and found that water level and the rainfall were the main factors influencing geoelectrical resistivity data changes. Furthermore, we had the interference analysis for water level through calculating regression fitting for the window length of a month, so that the calculated residuals can effectively eliminate annual change characteristics, and get the curve to analyze recent earthquakes. Finally, we found that there have no obvious abnormal images before the Huoshan and Fuyang 4.3 earthquakes.

Key words: Geoelectric resistivity, Interference characteristics, Water level, Anhui province

CLC Number:

P315.7

LIU Chuan-qin,JIN Yan,PEI Hong-yun,LI Jun-hui. Interference Factors and Processing of Digital Geoelectrical Resistivity Data in Anhui Province[J]. EARTHQUAKE, 2017, 37(2): 167-178.

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Interference Factors and Processing of Digital Geoelectrical Resistivity Data in Anhui Province

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