2022年德令哈M_(S)6.0地震序列视应力时空演化特征  

The spatiotemporal evolution characteristics of apparent stress in the 2022 Delingha M_(S)6.0 earthquake sequence

作　　者：胡维云 余娜[1,2] 刘文邦 黄浩[1] 张丽峰[1] 李启雷[1] 郭瑛霞[1] HU Weiyun;YU Na;LIU Wenbang;HUANG Hao;ZHANG Lifeng;LI Qilei;GUO Yingxia(Qinghai Earthquake Agency,Xining 810001,China;Geodynamics Field Observation and Research Station of the Qinghai-Xizang Plateau,Xining 810001,China)

机构地区：[1]青海省地震局,西宁810001 [2]青海格尔木青藏高原内部地球动力学野外科学观测研究站,西宁810001

出　　处：《地震地磁观测与研究》2024年第5期45-52,共8页Seismological and Geomagnetic Observation and Research

基　　金：2023年度震情跟踪定向工作任务(青年)(项目编号:2023010115);青海省地震局2023年地震科学基金(项目编号:2023B01);青海省基础研究计划项目(项目编号:2023-ZJ-770)。

摘　　要：基于Brune模型,对2022年青海德令哈M_(S)6.0地震序列中145个M_(L)≥2.5余震视应力进行计算。结果表明:德令哈M_(S)6.0地震序列余震视应力值与震级具有良好的拟合关系,呈明显的正相关性,在强余震发生前,视应力具有升高趋势,对判定后续强余震发生时间和地点具有一定指示意义。Based on the Brune model,the apparent stress of 145 M_(L)≥2.5 aftershocks in the 2022 Delingha M_(S)6.0 earthquake sequence in Qinghai Province is calculated.The results show that the apparent stress of the aftershocks of the Delingha M_(S)6.0 earthquake has a good fitting relationship with the magnitude,showing an obvious positive correlation,and the apparent stress increases before the occurrence of strong aftershocks,which has certain indicative significance for the determination of the time and location of the subsequent strong aftershocks.

关 键 词：德令哈M_(S)6.0地震 地震序列 视应力 

分 类 号：P315[天文地球—地震学]