乌什 M_(S)7.1地震序列及应力降特征研究  

STUDY ON WUSHI M_(S)7.1 EARTHQUAKE SEQUENCE AND STRESS DROP CHARACTERISTICS

作　　者：郭寅[1] 李金[1] 向元[1] S GUO Yin;GUO Yin;LI Jin;XIANG Yuan(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2024年第2期105-111,共7页Inland Earthquake

基　　金：新疆维吾尔自治区重点研发项目(2022B03001-1).

摘　　要：研究乌什M_(S)7.1地震序列时间和空间变化以及震源参数特征,结果表明地震余震主要分布在主震北东和南西两侧,展布与迈丹断裂的走向基本吻合。目前序列b值为0.67,h值为1.3,p值为1.28。震源机制解为逆冲型,应力降处于低值水平,序列衰减基本正常。此次地震为主震—余震型,最大余震为M_(S)5.8地震。In order to study the temporal and spatial variation of Wushi M_(S)7.1 earthquake sequence and the characteristics of the source parameters,the results show that the aftershocks are mainly distributed on the northeast and southwest sides of the main shock,and the distribution is basically consistent with the strike of the Maidan fault.The current sequence b value is 0.67,h value is 1.3,and p value is 1.28.The focal mechanism solution is thrust type,the stress drop is at a low level,and the sequence attenuation is basically normal.The earthquake is a mainshock-aftershock type,and the largest aftershock is M_(S)5.8 earthquake.

关 键 词：乌什M_(S)7.1地震 地震序列 震源机制解 应力降 

分 类 号：P315.7[天文地球—地震学]