[1]秦双龙,关玉梅,洪旭瑜,等.广西北流—广东化州 5.2 级地震前华南地区连续重力扰动信号分析[J].华南地震,2020,40(02):37-42.[doi:10.13512/j.hndz.2020.02.06]
　QIN Shuanglong,GUAN Yumei,HONG Xuyu,et al.Signal Analysis of Continuous Gravity Disturbance in South China before the Beiliu-Huazhou MS 5.2 Earthquake in the Junction of Guangxi and Guangdong[J].South China journal of seismology,2020,40(02):37-42.[doi:10.13512/j.hndz.2020.02.06]
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广西北流—广东化州 5.2 级地震前华南地区连续重力扰动信号分析()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2020年02期
页码:
37-42
栏目:
广西北流—广东化州5.2级地震专栏
出版日期:
2020-06-30

文章信息/Info

Title:
Signal Analysis of Continuous Gravity Disturbance in South China before the Beiliu-Huazhou MS 5.2 Earthquake in the Junction of Guangxi and Guangdong
作者:
秦双龙 ;  关玉梅 ;  洪旭瑜 ;  杨锦玲
（福建省地震局 , 福州 350003）
Author(s):
QIN Shuanglong;  GUAN Yumei;  HONG Xuyu;  YANG Jinling
(Fujian Earthquake Agency,Fuzhou 350003,China)
Keywords:
South China area; Relative gravimeter; High frequency signal; Nnon-seismic precursory anomaly
分类号:
P315.7
DOI:
10.13512/j.hndz.2020.02.06
文献标志码:
A
摘要:
利用华南地区的多个连续重力台站 gPhone 相对重力仪秒采样原始数据 , 对记录到 2019 年 10 月 12日广西北流 — 广东化州 5.2 级地震前后共 7 d 的重力秒采样数据进行预处理 , 提取高频扰动信号 , 应用短时傅里叶变换时频分析方法分析震前异常信号的频率特征 , 结合地震前后的台风活动变化 , 分析认为该扰动异常为 2019 年 19 号台风 “ 海贝思 ” 活动引起 , 非地震前兆异常。
Abstract:
Based on the original second-sampling data of the gPhone relative gravimeter at several continuous gravity stations in south China,the paper preprocessed the gravity second-sampling data of seven days before and after the Beiliu-Huazhou MS5.2 earthquake in the junction of Guangxi and Guangdong on October 12th,2019,extracted high frequency disturbance signals,analyzed the frequency characteristics of the anomalous signals before and after the earthquake by using the short-time Fourier transform method,and combined the changes in typhoon activity before and after the earthquake. It is believed that the disturbance anomaly is caused by the activity of typhoon Haibeisi in 2019 which is not a precursory anomaly.

备注/Memo

备注/Memo:
 收稿日期:2020-02-10
基金项目:中国地震局监测预报司2020年震情跟踪项目（2020010107）；福建省地震局科研专项（G201905）联合资助
作者简介:秦双龙（1984-）,男,工程师,主要从事地震前兆及地球物理等研究。
E-mail:slqin0624@126.com
更新日期/Last Update: 2020-08-11