地震动场地影响校正在烈度速报中的应用研究  

The Research on Application of Site Correction of Ground Motion in Rapid Reporting of Seismic Intensity

作　　者：方嘉治[1] 张颖[1] 汪逵 董奕[1] FANG Jiazhi;ZHANG Ying;WANG Kui;DONG Yi(Fujian Earthquake Agency,Fuzhou 350003,China)

机构地区：[1]福建省地震局,福州350003

出　　处：《华南地震》2020年第3期17-26,共10页South China Journal of Seismology

基　　金：福建省地震局地震灾害风险防范能力建设示范项目基金资助(152014000000190006)。

摘　　要：以1918年2月13日南澳海外7.3级地震为例,在对福建地区网格化基础上,利用地震动衰减关系计算出基岩地震动,采用地震动场地影响校正方法得到实际地表的地震动,再通过地震烈度物理关系转换得到福建地区烈度分布图,并与文献记载的该地震的影响烈度分布图进行对比,验证了地震动场地影响校正在地震烈度速报应用中的重要性。Taking Nan'ao overseas M7.3 Earthquake(February 13th,1918)as an example and based on grid points of Fujian district,the paper calculates bedrock ground motion parameters by using ellipsoid attenuation relationship,and figures out the ground motion parameters of the real earth's surface according to the ground motion site effect correction method,then obtains the intensity distribution map of Fujian area by transforming the physical relationship of earthquake intensity.The paper compares the calculated diagram and the documented isoseismic map,and verifies the importance of the site correction of ground motion in the application of rapid seismic intensity reporting.

关 键 词：地震动 场地校正 设定地震 烈度图 

分 类 号：P315.9[天文地球—地震学]