[1]马晓静,康 英,杨 选.结合波形互相关的双差定位方法在广西北流—广东化州 5.2 级地震序列中的应用[J].华南地震,2020,40(02):32-36.[doi:10.13512/j.hndz.2020.02.05]
 MA Xiaojing,KANG Ying,YANG Xuan.Application of Double-difference Relocation Method Using Waveform Cross-correlation on Beiliu—Huazhou MS 5.2 Earthquake Sequence[J].South China journal of seismology,2020,40(02):32-36.[doi:10.13512/j.hndz.2020.02.05]
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结合波形互相关的双差定位方法在广西北流—广东化州 5.2 级地震序列中的应用()
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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:
32-36
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:
Application of Double-difference Relocation Method Using Waveform Cross-correlation on Beiliu—Huazhou MS 5.2 Earthquake Sequence
作者:
马晓静 123 康 英 123 杨 选 123
(1. 广东省地震局 , 广州 510070; 2. 中国地震局地震监测与减灾技术重点实验室 , 广州 510070; 3. 广东省地震预警与重大工程安全诊断重点实验室 , 广州 510070)
Author(s):
MA Xiaojing123 KANG Ying123 YANG Xuan123
( 1. Guangdong Earthquake Agency, Guangzhou 510070, China; 2. Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology, CEA, Guangzhou 510070, China; 3. Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Project, Guangzhou 510070, China)
关键词:
双差定位波形互相关余震分布广西北流地震
Keywords:
Double difference locationWaveform cross-correlationAftershock distributionBeiliu earthquake
分类号:
P315.7
DOI:
10.13512/j.hndz.2020.02.05
文献标志码:
A
摘要:
基于广东地震台网记录的地震观测报告和连续波形数据 , 应用双差地震定位算法 , 对 2019 年 10 月 12日广西北流 - 广东化州 MS 5.2 地震序列进行重新精确定位。重新定位后结合震源分布和震源机制解发现 : 发震断层沿 NWW 方向展布 , 跨度约 3.5 km, 破裂深度 4~10 km。震后 25 h 内的余震基本沿断层方向分布 , 有部分沿破裂面向深处发展。之后的余震有向地表、向北东向发展的趋势 , 根据震源深度剖面分布判断断层的倾角约 75°。与震源机制解的断层形态基本一致。
Abstract:
Based on the catalog data and continuous waveform data recorded by Guangdong Digital Seismic Network , the Beiliu—Huazhou MS 5.2 earthquake sequence from 12th Oct,2019 were relocated with double difference algorithm. According to the hypocenter distribution and focal mechanism, the fault distributes along the NWW direction ,and spans about 3.5 km wide with a rupture depth range of 4~10 km. Aftershocks within 25 hours after the main shock distributed basically along the fault strike and mostly developed toward the deeper part. Aftershocks later developed toward the surface and northeast,and the dip of the fault was about 75 degree according to the profile,consistent with the focal mechanism solution.

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备注/Memo

备注/Memo:
收稿日期 :2020-02-10 基金项目 : 地震科技星火计划 (XH19032Y) 作者简介 : 马晓静(1987- ), 女 , 硕士 , 工程师 , 主要从事地震监测工作。 E-mail:531680042@qq.com
更新日期/Last Update: 2020-08-11