2018年11月25日新疆博乐MS4.9地震余震检测与目录完整性研究  

Research for Aftershock Detection and Completeness of Earthquake Catalogues of the Bole Ms4.9 Earthquake in November 2018

作　　者：闫新义 冯雪玲[1] 刘东亚[1] 谭毅培[2] Yan Xinyi;Feng Xueling;Liu Dongya;Tan Yipei(Earthquake Agency of Xinjiang Uygur Autonomous,Urumqi 830011,China;Earthquake Agency of Tianjin,Tianjin 300201,China)

机构地区：[1]新疆维吾尔自治区地震局,乌鲁木齐830011 [2]天津市地震局,天津300201

出　　处：《震灾防御技术》2020年第3期548-555,共8页Technology for Earthquake Disaster Prevention

基　　金：中国地震局"三结合"课题(CEA-JC/3JH-173102、3JH-202001097);新疆地震科学基金(202004)。

摘　　要：本文基于匹配滤波技术,通过SEPD(Seismic Events and Phase Detection)对2018年11月25日新疆博乐MS4.9地震序列进行检测,检测出遗漏地震32条,84.4%地震为ML0.0-1.0,9.4%地震小于ML0.0,较地震目录中原有15条地震多213%,检测出的遗漏地震事件使地震目录更加完整。检测后的最小完整性震级由检测前的ML1.6减至ML0.8,地震目录最小完整性震级的减小有利于地震工作者对区域地震活动性作出更准确全面的结论,并使地震危险性分析更可靠。Based on matched filter technique and by SEPD software,aftershock sequence to earthquake of Xinjinag Bole during 25th to 27th in november 2018 was detected,and 32 missing earthquakes were found.The missing earthquakes during ML0.0〜1.0 is 84.4%,the earthquakes less than ML0.0 is 9.4%.The amount of detected earthquakes is 213%more than the 14 earthquakes in catalogues,and the eaethquakes catalogue become more complete.The minimum integrity magnitude reduce from ML1.6 to ML0.8 after detection.The reduced of minimum integrity magnitude in the whole earthquakes catalogues is in favor of more accurately and roundly research for activity of area earthquake and more reliable to seismic hazard analysis.

关 键 词：匹配滤波技术 新疆博乐MS4.9地震 SEPD 遗漏地震 地震目录 

分 类 号：P315[天文地球—地震学]