[1]胡淑芳,李 军,李 强,等.台湾海峡MS6.2地震的微震检测定位及其发震断裂[J].华南地震,2022,(03):1-8.[doi:10.13512/j.hndz.2022.03.01]
 HU Shufang,LI Jun,LI Qiang,et al.Microseismic Detection and Location of the MS6.2 Earthquake in Taiwan Strait and Its Seismogenic Fault[J].,2022,(03):1-8.[doi:10.13512/j.hndz.2022.03.01]
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台湾海峡MS6.2地震的微震检测定位及其发震断裂()
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华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2022年03期
页码:
1-8
栏目:
地震科学研究
出版日期:
2022-09-15

文章信息/Info

Title:
Microseismic Detection and Location of the MS6.2 Earthquake in Taiwan Strait and Its Seismogenic Fault
文章编号:
1001-8662(2022)03-0001-08
作者:
胡淑芳1李 军1李 强1许振栋2
1.福建省地震局,福州 350000;2.福建省地震局平潭地震台,福建 平潭 350400
Author(s):
HU Shufang1LI Jun1LI Qiang1XU Zhendong2
1.Fujian Earthquake Agency , Fuzhou 350000, China;2.Pingtan Seismic Station , Fujian Earthquake Agency , Pingtan 350400, China
关键词:
台湾海峡MS6.2地震匹配定位微震探测定位目录完整性发震断层
Keywords:
Taiwan Strait MS6.2 earthquake Match and locate Microseismic detection and locationCompleteness of catalogsSeismogenic fault
分类号:
P315.2
DOI:
10.13512/j.hndz.2022.03.01
文献标志码:
A
摘要:
基于模板匹配定位(M&L)对2018年11月26日台湾海峡MS6.2地震进行遗漏地震的检测与定位。选取10个ML3.0以上余震作为模板,对震前一天和震后一年内的连续波形进行检测,截止到2019年11月26日,福建台网共记录定位的地震183次,经M&L方法检测定位后的地震750个,约为福建台网目录的4倍,未发现前震,最小完备性震级由ML2.4降到了ML1.9。地震目录完整性的明显改善,为研究该地震序列活动性及确定其发震断层提供了数据基础。检测定位后的地震空间分布沿东西向优势展布,但无具体已探明的断裂构造与之对应,因震区位于台湾海峡南部海域地区,并结合主震震源机制解,不排除该区存在未探明的东西向断裂构造。
Abstract:
Based on template matching and localization(M&L), the paper detects and locates the missed earthquakes in the Taiwan Strait MS6.2 earthquake on November 26th, 2018. This paper chooses 10 aftershocks with ML>3.0 as the templates and detects continuous waveforms one day before the earthquake and one year after the earthquake. As of November 26th, 2019, the Fujian seismic network recorded 183 earthquakes, and finally detected 750 missing earthquakes after M&L method detection, which was about 4 times of the catalogue of the Fujian seismic network. No foreshocks were found,and the minimum magnitude of completeness was reduced from ML2.4 to ML1.9. The improvement of the completeness of the earthquake catalogue provides data base for studying the earthquake sequence activity and determining the seismogenic fault. The spatial distribution of earthquakes after detection and location is dominantly distributed along the east-west direction, but there is no specific identified fault structure corresponding to it. Because the earthquake area is located in the southern waters of the Taiwan Strait, and combined with the focal mechanism of the mainshock, it cannot be ruled out that there are undiscovered east-west fault structures in this area.

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备注/Memo

备注/Memo:
收稿日期:2021-07-12
基金项目:中国地震局监测、预报、科研三结合项目(3JH-202001048);中国地震局地震科技星火计划攻关项目(XH21015)和国家自然科学基金面上项目(41774068)联合资助。
作者简介:胡淑芳(1984-),女,工程师,主要从事地震监测和分析预报方面的研究。E-mail: 282081391@qq.com
更新日期/Last Update: 2022-09-15