Investigation of Lushan earthquake ionosphere VTEC anomalies based on GPS data

Autor:	Weiping Jiang, Zhou Xiaohui, Hongfei Liu, Yifang Ma, Liansheng Deng
Rok vydání:	2013
Předmět:	Total electron content business.industry Equator Magnetic dip Geology Geotechnical Engineering and Engineering Geology Geodesy Physics::Geophysics Geophysics Atmosphere of Earth VTEC Epicenter Physics::Space Physics Global Positioning System Ionosphere business Seismology
Zdroj:	Earthquake Science. 26:259-265
ISSN:	1867-8777 1674-4519
Popis:	Vertical total electron content (VTEC) time series were obtained from 22 GPS stations near the epicenter of the Lushan earthquake. In this paper, we have adopted a sliding average method to detect and analyze anomalous VTEC associated with the earthquake. The results show that significant, negative ionosphere VTEC anomalies appeared over the 5 days before the earthquake, and on the day when earthquake occurred. The maximum value of VTEC anomalies that exceeded the lower bound reached 20 TECU. The spatial distribution of VTEC anomalies showed a conjugate structure, which shifted to the magnetic equator, and subsequently moved westwards.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dfa4b04133fb714ec2e2219aad1f5be6 https://doi.org/10.1007/s11589-013-0013-4 Zobrazit plný text záznamu Full text from SpringerLink