Examples of unusual ionospheric observations by the CSES prior to earthquakes

作     者：Rui Yan XuHui Shen JianPing Huang Qiao Wang Wei Chu DaPeng Liu YanYan Yang HengXin Lu Song Xu 

作者机构：The Institute of Crustal DynamicsChina Earthquake Administration 

出 版 物：《Earth and Planetary Physics》 (地球与行星物理（英文版）)

年 卷 期：2018年第2卷第6期

页      面：515-526页

学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：supported by the National Natural Science Foundation of China (41404058) 

主　　题：CSES ionospheric perturbations earthquake 

摘      要：The CSES(China seismic electromagnetic satellite) was launched on February 2, 2018 in a circular polar orbit at an altitude of～507 km. One of the main objectives of CSES is to search for and characterize ionospheric perturbations that can be associated with seismic activities, to better understand the generation mechanism of such perturbations. Its scientific payload can measure a broad frequency range of electromagnetic waves and some important plasma parameters. This paper is a first-hand study of unusual observations recorded by the CSES over seismic regions prior to four earthquakes with M 7.0 since the satellite s launch. CSES detectors measured irregularities near the epicenter of these four earthquakes. It is already clear that data from instruments onboard the CSES will be of significant help in studies of characteristics of ionospheric perturbations related to earthquakes and their generation mechanisms.