RESEARCH ON TEC ANOMALIES BEFORE Ms8.0 WENCHUAN EARTHQUAKE BY USING KALMAN FILTERING
Wu Yun1) ;Fu Ningbo2) ; Lin Jian1) ;Zhou Yiyan1) ;Zhu Fuying1) ;Yang Jian1) ; and Xiong Jing1)
1)Institute of Seismology, CEA, Wuhan 4300712)Jiangxi Supervision and Inspection Center for Surveying and Mapping Product Quality, Nanchang 330046
Abstract We have detected the anomalies of groundbased GPS TEC data by using Kalman filtering. We made a concrete discussion of approaches for carrying out Kalman filtering, and practically applied it to an analysis of 2dimensional TEC data. Considering SolarTerrestrial environmental factors such as solar activity, magnetic storms and disturbances, we analyzed the TEC anomalies processed with Kalman filtering, discussed the creditability and the exciting mechanism of the anomalies and confirmed that these distinct TEC anomalies occurred on May 9 and 10 were linked to Wenchuan Ms8.0 earthquake impending and would be one of the seismoionospheric precursors. Meanwhile, we proved Kalman filtering practical and effectual in processing of ionospheric TEC anomalies.
Key words ：
Kalman filter
GPS TEC
ionosphere
seismic precursor
Wenchuan earthquake
Received: 01 January 1900
Cite this article:
Wu Yun,Fu Ningbo,Lin Jian et al. RESEARCH ON TEC ANOMALIES BEFORE Ms8.0 WENCHUAN EARTHQUAKE BY USING KALMAN FILTERING[J]. , 2011, 31(2): 23-27.
Wu Yun,Fu Ningbo,Lin Jian et al. RESEARCH ON TEC ANOMALIES BEFORE Ms8.0 WENCHUAN EARTHQUAKE BY USING KALMAN FILTERING[J]. jgg, 2011, 31(2): 23-27.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2011/V31/I2/23
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