2016年广西苍梧M_S5.4地震前华南地区连续重力扰动异常分析  

Analysis of continuous gravity disturbance in South China before Cangwu M_S5.4 earthquake in Guangxi in 2016

作　　者：李盛[1] 张慧[1] 李志雄[1] 解晓静[1] 

机构地区：[1]海南省地震局,中国海口570203

出　　处：《地震地磁观测与研究》2018年第4期120-125,共6页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局监测;预测;科研三结合课题(项目编号:CEA-JC/3JH-172205);2017年度海南省科协青年科技英才创新计划(项目编号:QCXM201710);海南省地震局科研课题(项目编号:HDKJ201711;HDKJ201807)

摘　　要：收集华南地区8个重力台站g Phone/PET相对重力仪观测原始秒数据,对记录的2016年广西苍梧M_S5.4地震前4天重力原始秒数据,分别进行原始数据分析、0.01 Hz高通滤波和0.125—0.25 Hz带宽滤波,结果表明,震前4天8个重力台站数据均存在扰动异常,结合地震前后台风活动情况,分析认为,该扰动异常系台风"银河"和"妮妲"活动引起,非地震前兆异常。In this paper, we collected the original seconds data of Gphone/PET relative gravimeter from 8 gravity stations in South China. Then we analysis these original seconds datas, filter with 0.01 Hz high-pass and 0.125—0.25 Hz bandwidth to these observing g Phone/PET datas which 3 days ago before Cangwu MS5.4 earthquake in Guangxi. The results show that there are disturbances in the data of the 8 seismic stations 3 days ago before the earthquake. However, combined with typhoon activity analysis, it is considered that the disturbance is caused by typhoon ＂Galaxy＂ and ＂Nirvana＂ activities, it is not the earthquake precursory anomaly.

关 键 词：苍梧MS5.4地震 重力扰动 滤波 台风 

分 类 号：P315.726[天文地球—地震学]