地震统计区地震活动性参数b值和ν_(4)计算分析−以华北地区为例  

Calculation and Analysis of Seismic Activity Parameters b Value andν4 in the Seismic Statistical Region−Taking North China as An Example

作　　者：沈得秀[1] 王庆民[1] 许洪泰[1] 葛孚刚[1] 蒋其峰 Shen Dexiu;Wang Qingmin;Xu Hongtai;Ge Fugang;Jiang Qifeng(Shandong Earthquake Agency,Jinan 250014,China)

机构地区：[1]山东省地震局,济南250014

出　　处：《震灾防御技术》2024年第2期241-252,共12页Technology for Earthquake Disaster Prevention

基　　金：山东省地震局科技创新团队培育专项(TD202303);山东省地震局一般科研项目(YB2404)。

摘　　要：本文通过收集最新现代地震资料,采用历史地震与现代地震联合求取地震活动性参数的方法,按不同地震统计时段和震级段,基于Matlab程序中给定函数计算并拟合了华北平原地震统计区、郯庐地震统计区、长江下游-南黄海地震统计区、汾渭地震统计区的b值和ν_(4),并将结果与五代图推荐的b值和ν_(4)进行地震危险性分析对比,进而分析最新现代地震资料对b值和ν_(4)的影响。研究结果对地震统计区确定b值和ν_(4)有一定参考意义,对地震区划、工程场地地震安全性评价、省级地震危险性区划编制工作具有实际意义。Based on the given function in the Matlab program,this paper collects the latest modern seismic data,adopts the idea of combining historical earthquakes and modern earthquakes to obtain seismicity parameters,calculates and fits the b and v4 values of four seismic statistical regions,namely,the North China Plain seismic statistical region,the Tanlu seismic statistical region,the lower Yangtze River South Yellow Sea seismic statistical region,and the Fenwei seismic statistical region,according to different seismic statistical periods and magnitude segments,And compared and calculated the seismic hazard analysis with the recommended b andν4 values in the compilation of the Five Generation Map,and further analyzed the impact of the latest modern seismic data on the b andν4 values.The research results of this article have certain reference significance for determining the b andν4 values in earthquake statistical areas,and have practical significance for earthquake zoning,seismic safety evaluation of engineering sites,and the compilation of provincial-level seismic hazard zoning.

关 键 词：地震活动性参数 B值 ν_(4) 华北地区 

分 类 号：P315.5[天文地球—地震学]