基于张衡一号卫星监测的2021年青海玛多7.4级地震前电离层效应  

Seismo-Ionospheric Effects Prior to the 2021 Maduo,Qinghai Ms7.4 Earthquake based on the China Seismo-Electromagnetic Satellite

作　　者：郭雨帆 杜晓辉 董磊 汤兰荣 赵爱平 王甘娇 GUO Yu-fan;DU Xiao-hui;DONG Lei;TANG Lan-rong;ZHAO Ai-ping;WANG Gan-jiao(Engineering Research Center for Seismic Disaster Prevention and Engineering Geological Disaster Detection of Jiangxi Province(Earthquake Administration of Jiangxi Province),Nanchang 330013,China;Electronic Information School,Wuhan University,Wuhan 430072,China;Institute of Earthquake Forecasting,China Earthquake Administration,Beijing 100036,China)

机构地区：[1]江西省防震减灾与工程地质灾害探测工程研究中心(江西省地震局),江西南昌330013 [2]武汉大学电子信息学院,武汉430072 [3]中国地震局地震预测研究所,北京100036

出　　处：《地震》2023年第2期85-102,共18页Earthquake

基　　金：江西省防震减灾与工程地质灾害探测工程研究中心开放基金资助项目(SDGD202211);十四五装备预研项目(50925020104);中国地震局地震预测开放基金项目(XH22027D)。

摘　　要：本次研究围绕张衡一号(ZH-1)卫星监测到的2021年青海玛多Ms7.4地震前的电离层效应,采用上下四分位距法和小波变换法处理ZH-1卫星朗缪尔探针(LAP)探测到的电子密度N。和等离子体分析仪(PAP)探测到的离子密度N:(He+和O+)数据,经分析发现Ne、He+密度和0+密度在震前7天(2021年5月14日)和5天(2021年5月16日)出现同步异常。在此基础上,基于地球物理异常多项证据,分析认为2021年玛多Ms7.4地震孕育过程包括应力扩张早期、应力扩张晚期和临震加速期,该地震可能通过岩石圈一大气圈一电离层耦合模型的声重波、电磁波通道影响了电离层。In this paper,we focused on the characteristics of the seismo-ionospheric effects related to the 2021 Ms7.4 earthquakes in Maduo,Qinghai,China,which were detected by the China Seismo-Electromagnetic Satellite(ZH-1 satellite).By applying the sliding interquartile range method and the wavelet transform method to electron density(N.)data acquired by the Langmuir probe(LAP)and ion density(N.)data,including He+and O+data,acquired by the plasma analyzer package(PAP)onboard the ZH-1 satellite,synchronous anomalies of Ne,He^(+)and O^(+)were found under quiet geomagnetic conditions on 14 May and 16 May 2021that is,7 d and 5 d before the earthquakes,respectively.In addition,based on multiple evidence relating to earthquake precursor anomalies,we can divide that three preparation processes of the 2021 Maduo Ms7.4 earthquake,including early period of stress expansion,late period of stress expansion and acceleration period of impending earthquake,and we can conclude that it is possible that this earthquake affected the ionosphere through the acoustic,and electromagnetic channels,as described by the Lithosphere-Atmosphere-Ionosphere Coupling(LAIC)model.

关 键 词：张衡一号(ZH-1)卫星 地震电离层效应 电子密度 离子密度 圈层耦合机理 

分 类 号：P315.7[天文地球—地震学]