Comparative study on the deviation characteristics of post-earthquake intensity evaluation based on two intensity attenuation relationship models  

作　　者：Jing Ren Zhiqiang Li Shuaitang Huang Zhuantiao Tan Yahui Chen Qi Yao Weiyu Ma 

机构地区：[1]China Earthquake Networks Center,Beijing,100045,China [2]Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi,830011,China [3]Institute of Earthquake Forecasting,China Earthquake Administration,Beijing,100036,China

出　　处：《Earthquake Research Advances》2021年第2期16-25,共10页地震研究进展（英文）

基　　金：sponsored by the special fund of the Institute of earthquake forecasting,China Earthquake Administration(2020LNEF03);China Earthquake Networks Center Youth Fund(QNJJ202105).

摘　　要：We collect the isoseismal data of 488 earthquakes in western China and 182 earthquakes in eastern China after 1900.The least square method is used to establish two models of the seismic intensity attenuation relationship partitions in China,based on the major and minor axis ellipse models,and the area and the major axis radius,respectively.The two models are applied to the calculation of the intensity circle of the earthquake events with a magnitude M_(S)≥5.0 from 2008 to 2019,and the actual intensity is compared with the model intensity value as an indicator to verify the consistency between the actual intensity and the value from the empirical statistical model.Three real earthquake results are selected to calculate the major and minor axis and area of the ellipse using the two intensity attenuation relationship models.After comparison,we summarize the deviation characteristics of the intensity value,and put forward corresponding improvement suggestions.

关 键 词：Seismic intensity attenuation Deviation characteristics Disaster assessment 

分 类 号：P315.9[天文地球—地震学]