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v4,并将结果与五代图推荐的b值和v4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v4的影响.研究结果对地震统计区确定b值和v4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.
Abstract
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 modem 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 stat-istical periods and magnitude segments,And compared and calculated the seismic hazard analysis with the recommended b and v4 val-ues in the compilation of the Five Generation Map,and further analyzed the impact of the latest modem seismic data on the b and v4 val-ues.The research results of this article have certain reference significance for determining the b and v4 values in earthquake statistical areas,and have practical significance for earthquake zoning,seismic safety evaluation of engineering sites,and the compilation of pro-vincial-level seismic hazard zoning.
基金项目
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)
万方数据