前郭—松原区域中小震地震参数因子分析  

Multi-parameter Factor Analysis of Moderate and Small Earthquakes in Qianguo-Songyuan Area

作　　者：王岩[1] 夏彩韵 郭晓燕[1] 贾丽华[1] WANG Yan;XIA Cai-yun;GUO Xiao-yan;JIA Li-hua(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》2023年第1期1-5,共5页Journal of Disaster Prevention And Reduction

摘　　要：2011年日本3.11大地震后,前郭—松原区域地震活动明显增强,先后发生了多次5级以上地震,选取该区域周边200 km范围作为研究区域,引入因子分析的方法,对中小震序列的多种地震参数计算分析,降维获取综合指数W,结果显示,地震发生前2~10个月,W值通常有快速上升的变化,其变化幅度与地震强度、震中距相关。After Japan’s 3.11 earthquake in 2011,regional seismicity increased significantly in Qianguo-Songyuan area,and earthquake above M5 occurred many times.We used factor analysis method to calculate the seismic parameters of moderate and small earthquakes within 200km area around Qianguo and Songyuan.This study get a composite index W which contained most of the information in 17 seismic parameters of the area,and simplified anomaly analysis before strong earthquakes.

关 键 词：地震参数 因子分析 前郭地震 松原地震 

分 类 号：P315.3[天文地球—地震学]