地震学报（英文版）2008，Vol.21Issue(4)：425-437,13.
Ionospheric Ne disturbances before 2007 Pu'er, Yunnan, China, earthquake
Ionospheric Ne disturbances before 2007 Pu'er, Yunnan, China, earthquake
摘要
Abstract
Selecting three half orbits near the epicenter of Pu'er earthquake, we analyzed the Ne data recorded in their revis- ited orbits during a year before this earthquake, and extracted Ne precursors. The results show that:① There are significant seasonal variations of ionospheric Are in night time, which exhibit different shapes respectively in four seasons;②There are three main shapes of Ne: single-peak, saddle-shaped and even-shaped, all of which may oc- cur in four seasons, but each season with its typical shape relatively;③Spatial images of Ne showed high values near the epicenter in 30 days before the earthquake, and there is a good correlation between anomaly and distribu- tion of earthquake in space and time, which reflects that these spatial anomalies were indeed concerned with the earthquake;④There shows a certain similarity of the Ne curves among revisited orbits, which can provide back- ground information for distinguishing and identification of seismic anomaly.关键词
Pu'er earthquake/DEMETER satellite/electron density (Ne)/seasonal variations/earthquake-related anomalyKey words
Pu'er earthquake/DEMETER satellite/electron density (Ne)/seasonal variations/earthquake-related anomaly分类
天文与地球科学引用本文复制引用
OUYANG Xin-yan,ZHANG Xue-min,SHEN Xu-hui,LIU Jing,QIAN Jia-dong,CAI Jin-an,ZHAO Shu-fan..Ionospheric Ne disturbances before 2007 Pu'er, Yunnan, China, earthquake[J].地震学报（英文版）,2008,21(4):425-437,13.基金项目
Fundermental Scientific Research of Institute of Earthquake Science, China Earthquake Administration (0207690221) and National Key Technology Research and Development Program. （0207690221）
