STATISTICAL ANALYSIS OF PRE-EARTHQUAKE IONOSPHERIC TEC DISTURBANCE
Zhu Fuying 1,2 ) ;Wu Yun 1,2) ;Zhou Yiyan 1,2) ; and Lin Jian 1,2,3)
1)Institute of Seismology, CEA, Wuhan 430071 2)Crustal Movement Laboratory, Wuhan 4300713)Rearch Center of Satellite Navigation and Position Technology of Wuhan University, Wuhan 430079
Abstract It has been proved by a number of researches that the ionospheric anomalous disturbance do appear a few days or hours before earthquake. On the basis of Total Electron Content (TEC) obtained from Internet GPS Service(IGS), by use of the method of moving average, the 50 Ms≥7.0 earthquakes all over the world since January 1, 2007 were examined.The statistical results show that, excluding the other possible factors, there were significant ionospheric disturbances including ionospheric anomalous increase and anomalous decrease before the 94% of all the earthquake onset, and the apparent anomalous decrease occurred within 7 days before the earthquake but the anomalous increase is not the function of the time.
Key words ：
earthquake
Total Electron Content(TEC)
anomalous disturbance
statistical analysis
Internet GPS Service(IGS)
Received: 01 January 1900
Corresponding Authors:
Zhu Fuying
Cite this article:
Zhu Fuying,Wu Yun,Zhou Yiyan et al. STATISTICAL ANALYSIS OF PRE-EARTHQUAKE IONOSPHERIC TEC DISTURBANCE[J]. , 2010, 30(5): 19-23.
Zhu Fuying,Wu Yun,Zhou Yiyan et al. STATISTICAL ANALYSIS OF PRE-EARTHQUAKE IONOSPHERIC TEC DISTURBANCE[J]. jgg, 2010, 30(5): 19-23.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2010/V30/I5/19
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