海城老震区地震序列地震活动性参数综合变化分析  

Comprehensive Index Analysis of Seismic Activity Parameters in Haicheng Area

作　　者：王岩[1] 郭晓燕[1] 夏彩韵 刘硕 陈梓怡 WANG Yan;GUO Xiaoyan;XIA Caiyun;LIU Shuo;CHEN Ziyi(Liaoning Earthquake Agency,Liaoning Shenyang 110034,China)

机构地区：[1]辽宁省地震局,辽宁沈阳110034

出　　处：《防灾减灾学报》2025年第2期10-16,共7页Journal of Disaster Prevention And Reduction

基　　金：中国地震局地震科技星火计划项目(XH24005YA);辽宁省地震局预研项目(LZ202304Y)。

摘　　要：1975年2月4日辽宁海城7.3级地震发生后,海城老震区地震活动不断。该区域地震活动变化对辽宁地区整体的地震活动水平产生了直接影响。采用因子分析方法,对海城老震区地震序列的14种地震活动性参数进行综合降维,并将辽宁地区划分为三个不同分区,分别对比这些分区与老震区综合指数W值变化特征的异同,并进一步分析辽宁地区的地震危险性特征。Earthquake events continue to occur in the Haicheng area,following the 7.3-magnitude Haicheng earthquake on February 4,1975.The seismic activity in Haicheng affects the overall seismic activity level in Liaoning region.This study calculated 14 seismic activity parameters of the Haicheng earthquake sequence and introduced factor analysis method to comprehensively analyze the data.At the same time,Liaoning was divided into three different zones and their comprehensive indices were calculated separately.Finally,the study compared the similarities and differences between the comprehensive indices of different zones and the comprehensive index of Haicheng.

关 键 词：海城地震 地震活动性参数 因子分析 辽宁地震分区 

分 类 号：P315.5[天文地球—地震学]