1941年9月21日江西寻乌北地震考证及发震构造探讨  

Textual Research and Causative Structure of the Northern Xunwu Earthquake in Jiangxi Province on September 21,1941

作　　者：邓辉 董非非 谢斌 DENG Hui;DONG Fei-fei;XIE Bin(Earthquake Administration of Jiangxi Province,Nanchang 330096,China;Jiangxi Institute of Earthquake Prevention and Mitigation Engineering,Nanchang 330039,China)

机构地区：[1]江西省地震局,江西南昌330096 [2]江西省防震减灾工程研究所,江西南昌330039

出　　处：《地震》2021年第3期104-113,共10页Earthquake

基　　金：地震科技星火计划项目(XH19025Y);江西省防震减灾与工程地质灾害探测工程研究中心、江西九江扬子块体东部地球动力学野外科学观测研究站2020年度开放基金资助项目(SDGD202018);国家科技支撑计划(2006BAC13B01)。

摘　　要：1941年江西寻乌北5级地震的震中位置和等震线,在各版本地震目录和调查报告中不尽一致。在收集前人研究成果和补充新资料的基础上,通过对地震调查资料的详细考证,核查各记录点地震烈度,复核地震宏观震中参数,重新确定其等震线范围,并结合地震地质调查工作,对1941年寻乌北地震可能的发震构造进行了综合研究。分析认为,1941年寻乌北5级地震宏观震中参数为25.1°N、115.7°E,等震线呈NW向展布,其发震构造可能是震区内的NW向断裂,河源—邵武断裂则为其控震构造。The epicentre location and isoseismic line of the 1941 M5 3/4northern Xunwu earthquake in jiangxi province are not consistent in the seismic catalogue and investigation report of each version.On the basis of absorbing previous research results and supplementing new data,through detailed textual research of seismic survey data,we check the seismic intensity of each recorded point,review macro epicentre parameters of the earthquake,and redetermine its isoseismal range.Combined with the seismogeological investigation,the possible seismogenic structures of the 1941 AD northern Xunwu earthquake are studied comprehensively.According to the comprehensive analysis,the macroscopic epicentric parameters of the 1941 M5 3/4northern Xunwu earthquake are 25.1°N and 115.7°E,and its isoseismal lines are distributed in the NW direction.Its seismogenic structure may be the huanggang-bijiashan fault,and its controlling structure may be the heyuan-shaowu fault.

关 键 词：调查资料考证 宏观震中 等震线 发震构造 江西寻乌 

分 类 号：P315.2[天文地球—地震学]