Temporal distribution characteristics of GNSS ionospheric occultation data and its effects in earthquake-ionosphere anomaly detection  

作　　者：Zhao Ying An Jiachun 

机构地区：[1]Key Laboratory of Earthquake Geodesy,Institute of Seismology,China Earthquake Administration [2]Chinese Antarctic Center of Surveying and Mapping,Wuhan University

出　　处：《Geodesy and Geodynamics》2013年第4期33-40,共8页大地测量与地球动力学（英文版）

基　　金：supported by the National Science Foundation of China(41174029,41204028);Chinese Arctic and Antarctic Administration(20110205);the Fundamental Research Funds for the Central Universities(121001)

摘　　要：The temporal distribution characteristics of COSMIC occultation data are analyzed in detail, and the limitations in earthquake-ionosphere anomaly detection caused by the temporal distribution characteristics of COSMIC occultation data are discussed using the example of the Wenchuan earthquake. The results demonstrate that there is no fixed temporal resolution for COSMIC occultation data when compared with other ionospheric observation techniques. Therefore, occultation data cannot currently be independently utilized in research studies but can only be used as a complement to other ionospheric observation techniques for applications with high temporal resolution demands, such as earthquake-ionosphere anomaly detection.The temporal distribution characteristics of COSMIC occultation data are analyzed in detail, and the limitations in earthquake-ionosphere anomaly detection caused by the temporal distribution characteristics of COSMIC occultation data are discussed using the example of the Wenchuan earthquake. The results demonstrate that there is no fixed temporal resolution for COSMIC occultation data when compared with other ionospheric observation techniques. Therefore, occultation data cannot currently be independently utilized in research studies but can only be used as a complement to other ionospheric observation techniques for applications with high temporal resolution demands, such as earthquake-ionosphere anomaly detection.

关 键 词：CNSS radio occultation IONOSPHERE temporal distribution characteristics EARTHQUAKE 

分 类 号：P315.72[天文地球—地震学]