[1]WANG Qinghua,FENG Jianlin,TAN Yujuan,et al.Change of Gravity Field before Sichuan Xingwen MS5.7 and Gongxian MS5.3 Earthquakes in 2018[J].Journal of Seismological Research,2019,42(03):393-397.
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Change of Gravity Field before Sichuan Xingwen MS5.7 and Gongxian MS5.3 Earthquakes in 2018
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
42
Number of periods:
2019 03
Page number:
393-397
Column:
Public date:
2019-07-24
- Title:
- Change of Gravity Field before Sichuan Xingwen MS5.7 and Gongxian MS5.3 Earthquakes in 2018
- CLC:
- P315.726
- DOI:
- -
- Abstract:
- Using the relative gravity measurement data in Sichuan-Yunnan region from 2015 to 2018,we analyzed the evolution process of gravity field in different time scales before Sichuan Xinxing MS5.7 in 2018 and Gongxian MS5.3 earthquakes in 2019. The results show that the variation of gravity field in Sichuan-Yunnan region closely linked with these two earthquakes. ① The annual scale of gravity field change image better reflect the evolution process of gravity field before two earthquakes,i.e. “trend gravity anomaly change→low value change→earthquake occur near the zero contour of gravity change high gradient zone”; ② The gravity fields in different time scales show that,these two earthquakes occurred near the zero contour of the gravity gradient,which further proves that the dynamic image of gravity field has important indication significance for the prediction of strong earthquake locations.
- References:
- -
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Last Update:
2019-07-24