2021年漾濞MS6.4级地震前兆异常分析

(中国地震科学实验场大理中心,云南 大理 671000)

漾濞6.4级地震;前兆异常 ;背景噪声

Precursor Anomaly Analysis of the Yangbi MS6.4 Earthquake in 2021
ZHANG Huaying,YANG Jianwen,GAO Qiong

(Dali Center of China Earthquake Science Experimental Site,Dali 671000,China)

Yangbi MS6.4 earthquake;Precursor anomaly;Background noise

DOI: 10.13512/j.hndz.2021.02.25

备注

对2021年5月21日漾濞6.4级地震的前兆资料进行分析,认为漾濞6.4级地震之前滇西地区的地下流体、形变以及背景噪声都出现了不同程度的异常,尤其滇西北地区的水温水位在震前表现出明显的短临特征。

By analyzing the precursory data of the Yangbi MS6.4 earthquake on May 21st,2021,it is considered that before the Yangbi MS6.4 earthquake,the underground fluid,deformation,and background noise in western Yunnan all showed different degrees of anomalies,especially the water temperature and level in Northwest Yunnan showed obvious short-term and impending characteristics before earthquake.

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