福建内陆中强震前b值空间扫描分析  

Spatial Scanning Analysis of b-value before Medium-strong Earthquakes in Fujian Province

作　　者：郑永通[1] 全建军[1] 龚薇[2] 刘愫昀 王绍然[1] 赖福霖[1] ZHENG Yongtong;QUAN Jianjun;GONG Wei;LIU Suyun;WANG Shaoran;LAI Fulin(Longyan Earthquake Monitoring Center Station,Fujian Earthquake Agency,Longyan 364000,China;Nanping Earthquake Monitoring Center Station,Fujian Earthquake Agency,Nanping 353000,China)

机构地区：[1]福建省地震局龙岩地震监测中心站,福建龙岩364000 [2]福建省地震局南平地震监测中心站,福建南平353000

出　　处：《华北地震科学》2022年第3期93-99,共7页North China Earthquake Sciences

基　　金：福建省地震局地震台站科技基金专项(T201708)。

摘　　要：选取b值空间扫描的起算震级,对福建内陆中强震前b值空间进行扫描分析,结果显示:绝大多数中强震前,在震中或附近会出现b值空间扫描异常,且多数中强震震前b值异常一直持续到发震,异常持续时间与异常范围1~2年内发生的中强震次数有关;一般情况下,异常范围内发生的中强震次数越多,震前异常持续时间越长。The starting magnitude of b-value spatial scanning is selected to scan and analyze b-value space before medium-strong earthquakes in inland Fujian province.The results show that before most medium-strong earthquakes,there will be b-value spatial scanning anomaly at or near the epicenter,and the b-value anomaly lasts until the onset of most moderate and strong earthquakes,and the duration of the anomaly is related to the number of medium-strong earthquakes within the anomaly range of 1~2 years.In general,the more medium-strong earthquakes occur in the anomaly range,the longer the duration of the anomaly before the earthquake.

关 键 词：福建内陆 中强震 b值空间扫描 异常分析 

分 类 号：P315.72[天文地球—地震学]