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2017年九寨沟地震前地电场异常现象分析

Analysis of Geoelectric Field Anomalies Before the 2017 Jiuzhaigou Earthquake
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摘要 选取地电场2017年的观测数据,应用九寨沟MS7.0地震震中500 km范围内部分典型地电场台站的资料,分析震前自然电场、地电场不同潮汐成分临震前的异常变化情况。结果显示,大武、天水、固原、周至、成都、汉王等台站自然电场临震前都出现过明显的异常;乾陵、平凉、固原等台站不同周期潮汐成分临震前出现突跳的时间不同,不同台站同一潮汐成分出现突跳的时间同步或准同步。 Based on the observation data of geoelectric field in 2017 and the data of some typical geoelectric stations within 500km of the epicenter of Jiuzhaigou Ms7.0 earthquake,the abnormal changes of natural electric field and different tidal components of geoelectric field before the earthquake are analyzed.The results show that the natural electric fields of Dawu,Tianshui,Guyuan,Zhouzhi,Chengdu,Hanwang and other stations have obvious anomalies before earthquakes;the time of sudden jump of tidal components in different periods at Qianling,Pingliang and Guyuan stations is different,and the time synchronization or quasi synchronization of sudden jumps of the same tidal component at different stations is different.
作者 辛建村 XIN jian-cun(Shaanxi Earthquake Agency, Xi'an, Shaanxi 710068, China)
机构地区 陕西省地震局
出处 《山西地震》 2020年第4期22-25,共4页 Earthquake Research in Shanxi
关键词 地电场 自然电场 九寨沟地震 潮汐成分 Geoelectric field Natural electric field Jiuzhaigou earthquake Tidal component Abnormal phenomenon
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