Earthquake electromagnetic precursor anomalies detected by a new ground-based observation network

ZHAO Guoze; HAN Bing; WANG Lifeng; TANG Ji; BI Yaxin; ZHAN Yan; CHEN Xiaobin; XIAO Qibin; ZHANG Jihong

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Earthquake electromagnetic precursor anomalies detected by a new ground-based observation network
Vol. 24, Issue S1, Pages: 197-201(2020)
Published：07 June 2020
DOI：
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DOI：

Zhao G Z, Han B, Wang L F, Tang J, Bi Y X, Zhan Y, Chen X B, Xiao Q B and Zhang J H. 2020. Earthquake electromagnetic precursor anomalies detected by a new ground-based observation network. Journal of Remote Sensing(Chinese). 24(S1): 197-201 DOI：

摘要

Abstract

It is a debated topic if there is any observable precursor anomalies prior to earthquake (EQ hereafter) and if the stronger EQ can be successfully predicted. During the last decades quite a lot of observable electromagnetic (EM) precursors were published by using a techniques equipped in either satellites or on ground-based stations. But there are only a few cases that the short-term precursor anomalies of EM field before earthquakes were observed by using alternate EM fields on ground. This paper will present a new EM observation network built in recent years and show a new finding of EM field with the variation of a one-year cycle observed using the network. As an example

the short-term precursor anomalies of apparent resistivity before the Yangbi EQ (Ms=5.1) occurred on March 17

2017 in Yunnan province will be studied. The observed anomalous phenomena indicate that the anomaly before the EQ can be captured only if a reasonably effective method is used

and it is believed that continuously observed data on the fixed observation network for long time is a effective means for studying anomalies that appeared before earthquakes. This network can also play an important role in studying the EM environment from space.

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