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
[1]
GAO Meng,WANG Shunshun,WANG Cao,ZHU Huizhong,XU Aigong. Research on the Algorithm of Triple-Frequency BDS RTK between Middle-Range Baseline [J]. jgg, 2022, 42(1): 5-8.
[2]
WANG Fu,HAN Baomin,HU Liangliang,MENG Hao,GUO Zhenhua. Research on GNSS/INS Integrated Navigation Algorithm in Complex Urban Environments [J]. jgg, 2022, 42(1): 15-20.
[3]
ZHANG Kexin,TIAN Chongrui,JIAO Jian,ZENG Qiming. Research on Smoothing in InSAR Ionospheric Correction [J]. jgg, 2022, 42(1): 29-34.
[4]
TANG Jun,LI Yinjian,ZHONG Zhengyu,GAO Xin. Prediction Model of Ionospheric TEC by EOF and LSTM Neural Network [J]. jgg, 2021, 41(9): 911-915.
[5]
YANG Qiulian,ZHAO Zhen,HU Zhigang. Analysis of SBAS B1c Grid Ionospheric Algorithm Correction for BDS-3 [J]. jgg, 2021, 41(9): 916-919.
[6]
HUANG Jiawei,LU Tieding,HE Xiaoxing,LI Wei. Short Term Prediction Model of Ionospheric TEC Based on Residual Correction of Prophet-Elman [J]. jgg, 2021, 41(8): 783-788.
[7]
LIU Lili,LIN Xueyuan,YU Feng,CHEN Xiangguang. A Filtering Method of SINS/CNS/GNSS Integrated Navigation System [J]. jgg, 2021, 41(7): 676-681.
[8]
LU Tieding,HUANG Jiawei,HE Xiaoxing,Lü Kaiyun. Short-Term Ionospheric TEC Prediction Using EWT-Elman Combination Model [J]. jgg, 2021, 41(7): 666-671.
[9]
LIU Zhijun,TAN Kai,WANG Qi,WANG Lei,ZHANG Jian,ZHAO Bin,QIAO Xuejun. Numerical Simulation Analysis of After-Slip and Viscoelastic Relaxation after the Wenchuan Earthquake [J]. jgg, 2021, 41(6): 577-583.
[10]
WEI Shengtao,LI Dehai,CHEN Bingzhu,BEI Jinzhong,LENG Hongyu. Convergence Analysis of PPP Additional Regional Ionospheric Constraints [J]. jgg, 2021, 41(5): 525-529.
[11]
ZHAO Zhichuang,ZHANG Yan,ZHAO Ying. Recognition Analysis on Anomalous Characteristics of Imminent Earthquake——Taking Wenchuan Earthquake as an Example [J]. jgg, 2021, 41(5): 544-549.
[12]
LU Tieding,HUANG Jiawei, LU Chunyang,HE Xiaoxing,QIAN Wenlong. Short-Term Ionospheric TEC Prediction Model Based on EWT-ARMA [J]. jgg, 2021, 41(4): 331-335.
[13]
LI Lei,ZHANG Ning,YIN Shuhui,WANG Yizhuo. ARMA Residual Correction Model for Detecting Ionospheric TEC Anomalies before Menyuan MS 6.4 Earthquake [J]. jgg, 2021, 41(4): 382-386.
[14]
DING Yitao,GUO Meijun. Accuracy Analysis of Beidou Ionosphere Model [J]. jgg, 2021, 41(2): 131-139.
[15]
ZHANG Qi,ZENG Ran,XIN Shaoming,GONG Shucheng,REN Hanxin,FANG Rongxin. Rapid Re-Convergence Methods of Real-Time PPP When Satellite Cycle-Slips Occur Frequently under Seismic Monitoring Environment [J]. jgg, 2021, 41(10): 1008-1013.