基于远震接收函数的宜昌地区地壳结构  

Crustal structure in Yichang area using teleseismic receiver functions

作　　者：况春利 彭籽壹 张雅茜 张笑晗 徐佳静 王慧[1,2] 刘迁 KUANG Chunli;PENG Ziyi;ZHANG Yaqian;ZHANG Xiaohan;XU Jiajing;WANG Hui;LIU Qian(Institute of Seismology,China Earthquake Administration,Wuhan 430071,China;Hubei Earthquake Agency,Wuhan 430071,China;China Earthquake Networks Center,Beijing 100045,China;Hunan Earthquake Agency,Changsha 410004,China)

机构地区：[1]中国地震局地震研究所,武汉430071 [2]湖北省地震局,武汉430071 [3]中国地震台网中心,北京100045 [4]湖南省地震局,长沙410004

出　　处：《地震地磁观测与研究》2024年第3期16-22,共7页Seismological and Geomagnetic Observation and Research

基　　金：湖北省地震局(中国地震局地震研究所)基础科研基金(项目编号:306337-37,306337-19)。

摘　　要：通过湖北地震台网获得宜昌附近5个测震台站2020—2022年远震波形记录,采用时间域迭代反卷积方法,提取测震台站下方径向接收函数,并根据H-κ叠加方法进行反演,估算台站下方地壳厚度和平均波速比。结果显示,研究区地壳厚度呈EW向差异变化,数值为31.4—46.1 km,平均波速比为1.59—1.87。We calculated receiver functions of seismic body waves of 5 stations in Yichang area in Hubei Province by using teleseismic waveforms records.The crustal thickness and the average velocity ratios of the 5 stations were calculated by H-κmethod.The results show that the crustal thickness is between 31.4 km and 46.1 km,and the average wave velocity ratio is between 1.59 and 1.87,and the crustal thickness varies in east-west direction.

关 键 词：接收函数 H-k叠加 地壳厚度 波速比 

分 类 号：P315.7[天文地球—地震学]