| 2016年广西苍梧MS 5.4地震前华南地区连续重力扰动异常分析 |
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| 引用本文： | 李盛,张慧,李志雄,解晓静.2016年广西苍梧MS 5.4地震前华南地区连续重力扰动异常分析[J].地震地磁观测与研究,2018,39(4):120-125. |
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| 作者姓名： | 李盛 张慧 李志雄 解晓静 |
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| 作者单位： | 中国海口 570203 海南省地震局 |
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| 基金项目： | 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） |
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| 摘 要： | 收集华南地区8个重力台站gPhone/PET相对重力仪观测原始秒数据，对记录的2016年广西苍梧MS 5.4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。
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| 关 键 词： | 苍梧MS 5.4地震 重力扰动 滤波 台风 |
Analysis of continuous gravity disturbance in South China before Cangwu MS 5.4 earthquake in Guangxi in 2016 |
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| Li Sheng,Zhang Hui,Li Zhixiong,Xie Xiaojing.Analysis of continuous gravity disturbance in South China before Cangwu MS 5.4 earthquake in Guangxi in 2016[J].Seismological and Geomagnetic Observation and Research,2018,39(4):120-125. |
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| Authors: | Li Sheng Zhang Hui Li Zhixiong Xie Xiaojing |
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| Institution: | Hainan Earthquake Agency, Haikou 570203, China |
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| Abstract: | 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 gPhone/PET datas which 3 days ago before Cangwu MS 5.4 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. |
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| Keywords: | Cangwu MS 5 4 earthquake gravitational disturbance filtering typhoon |
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