乌什MS7.1地震序列及应力降特征研究
STUDY ON WUSHI MS7.1 EARTHQUAKE SEQUENCE AND STRESS DROP CHARACTERISTICS
郭寅 1李金 1向元1
作者信息
- 1. 新疆维吾尔自治区地震局,新疆乌鲁木齐 830011
- 折叠
摘要
研究乌什MS7.1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MS5.8地震.
Abstract
In order to study the temporal and spatial variation of Wushi MS7.1 earthquake sequence and the characteristics of the source parameters,the results show that the aftershocks are mainly dis-tributed on the northeast and southwest sides of the main shock,and the distribution is basically con-sistent 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 MS5.8 earthquake.
关键词
乌什MS7.1地震/地震序列/震源机制解/应力降Key words
Wushi MS7.1 earthquake/Seismic sequence/Focal mechanism/Stress drop引用本文复制引用
基金项目
新疆维吾尔自治区重点研发项目(2022B03001-1)
出版年
2024
NETL
NSTL
万方数据