中美日仪器地震烈度的计算方法对比和经验换算关系  

Comparison of the calculation methods and empirical conversion relations forthe instrumental seismic intensity in China,the United States and Japan

作　　者：傅豪 马强[1,2] 解全才 陶冬旺[1,2] FU Hao;MA Qiang;XIE Quancai;TAO Dongwang(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China)

机构地区：[1]中国地震局工程力学研究所地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]地震灾害防治应急管理部重点实验室,黑龙江哈尔滨150080

出　　处：《地震工程与工程振动》2023年第6期75-83,共9页Earthquake Engineering and Engineering Dynamics

基　　金：中国地震局工程力学研究所基本科研业务费专项资助项目(2022C07,2021B08);黑龙江省自然科学基金项目(LH2022E119)。

摘　　要：2020年修订的国家标准《中国地震烈度表》引入仪器测定的地震烈度,即仪器地震烈度作为评定地震烈度的指标之一,在震后烈度评定中已经得到广泛应用。仪器地震烈度根据实测地震动记录计算得到,国际上现行地震烈度标度和计算方法并不一致,对于深入应用不同国家和地区仪器地震烈度造成不便。应用大量中国和日本4级以上地震的强震动观测记录,计算了中国、美国和日本的仪器地震烈度及相关地震动参数,对比分析了仪器地震烈度计算方法,得到了相关地震动参数之间的皮尔逊相关系数和统计关系,并给出了3种仪器地震烈度之间的经验换算关系。The national standard“The Chinese Seismic Intensity Scale”revised in 2020 introduces the instrumental seismic intensity.The instrumental seismic intensity as one of the indicators for assessing the seismic intensity,has been widely used in post-earthquake intensity assessment.Instrumental seismic intensity is calculated based on the measured ground motion records.The current international seismic intensity scale and calculation methods are not consistent,which causes inconvenience for in-depth application of instrumental seismic intensity in different countries and regions.This paper applies a large number of strong motion observation records of earthquakes of magnitude 4 or higher in China and Japan to calculate the instrumental seismic intensity and related ground motion parameters in China,the United States and Japan.Then,we compared and analyzed the instrumental seismic intensity calculation methods and obtained the Pearson correlation coefficients and statistical relationships between the relevant ground motion parameters.Finally,we give empirical conversion relations between the three instrumental seismic intensities.

关 键 词：强震动观测 仪器地震烈度 地震动参数 

分 类 号：P315.9[天文地球—地震学]