用卡尔曼滤波法分析汶川Ms8.0地震TEC异常

英文篇名：RESEARCH ON TEC ANOMALIES BEFORE Ms8.0 WENCHUAN EARTHQUAKE BY USING KALMAN FILTERING
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：吴云 ; 付宁波 ; 林剑 ; 周义炎 ; 祝芙英 ; 杨剑 ; 熊晶
英文作者：Wu Yun 1) ; Fu Ningbo 2) ; Lin Jian 1) ; Zhou Yiyan 1) ; Zhu Fuying 1) ; Yang Jian 1) and Xiong Jing 1) 1)Institute of Seismology ; CEA ; Wuhan 430071 2)Jiangxi Supervision and Inspection Center for Surveying and Mapping Product Quality ; Nanchang 330046
中文关键词：卡尔曼滤波 ; GPS TEC ; 电离层 ; 地震前兆 ; 汶川地震
英文关键词：Kalman filter ; GPS TEC ; ionosphere ; seismic precursor ; Wenchuan earthquake
出版日期：2011-04-15
机构：中国地震局地震研究所;江西省测绘产品质量监督检验站;
年：2011
期：02
出版单位：大地测量与地球动力学

摘要

对汶川Ms8.0地震前的TEC数据用卡尔曼滤波法进行异常检测,分析了TEC异常的可信性以及地震激发TEC异常的可能机制,确认地震前第3天(5月9日)和第2天(5月10日)的显著TEC异常与地震临近有关,可以作为地震电离层前兆信息之一。
We have detected the anomalies of ground-based 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 2-dimensional TEC data.Considering Solar-Terrestrial 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 M s8.0 earthquake impending and would be one of the seismo-ionospheric precursors.Meanwhile,we proved Kalman filtering practical and effectual in processing of ionospheric TEC anomalies.

引文

1 Liu J Y,et a1.Seismo-ionospheric signatures prior toM≥6.0 Taiwan earthquakes[J].Geophysical research letters,2000,19:3 113-3 116.
    2卓裕荣.地震电离层前兆[D].台湾中央大学,2002.(Zhuo Yurong.Ionospheric precursors of earthquake[D].National Central University,2002)
    3 Pulinets S A and Boyarchuk K.Ionospheric precursors ofearthquakes[M].Springer-Verlag Berlin Heidelberg,2004.
    4 Pulinets S A,et a1.Thermal,atmospheric and ionosphericanomalies around the time of the ColinaM7.8 earthquake of21 January 2003[J].Annales Geophysicae,2006,24:1-15.
    5马新欣,金红林,孟国杰.利用地基GPS观测数据研究与地震有关的电离层异常[J].地震,2008,28(4):80-90.(Ma Xinxin,Jin Honglin and Men Guojie.Research on iono-spheric anomalies related to earthquake by using ground-based GPS observation data[J].Earthquake,2008,28(4):80-90)
    6林剑,等.基于GPS探测汶川地震电离层TEC的异常[J].地球物理学报,2009,52(1):291-300.(Lin Jian,etal.Ionosphere TEC anomaly detected by GPS related to Wen-chuan earthquake[J].Chinese Journal of Geophysics,2009,52(1):291-300)
    7林剑,吴云,祝芙英.震前电离层TEC异常扰动的研究[J].武汉大学学报(信息科学版),2009,34(8):975-978.(Lin Jian,Wu Yun and Zhu Fuying.On ionosphere TECanomalous disturbance before earthquakes[J].Geomaticsand Information Science of Wuhan University,2009,34(8):975-978)
    8 Zhou Yiyan,et al.Ionospheric anomalies detected byground-based GPS before theMw7.9 Wenchuan earthquakeof May 12,2008,China[J].Journal of Atmospheric andSolar-Terrestrial Physics,2009,71:959-966.
    9周义炎,等.中国汶川地震(2008,5.12)前电离层的VTEC异常变化[J].地球物理学报,2010,53(3):556-566.(Zhou Yiyan,et al.Anomalous variations of iono-spheric VTEC beforeMs8.0 Wenchuan earthquake[J].Chi-nese Journal of Geophysics,2010,53(3):556-566)
    10祝芙英,等.汶川地震前电离层VTEC的异常响应[J].地震学报,2009,31(2):180-187.(Zhu Fuying,et al.A-nomalous response of ionospheric VTEC before the Wen-chuan earthquake[J].Acta Seismologica Sinica,2009,31(2):180-187)
    11祝芙英,等.震前电离层TEC异常探测方法研究[J].大地测量与地球动力学,2009,(3):50-54.(Zhu Fuying,et al.Study on method of detecting ionospheric TEC anoma-ly before earthquake[J].Journal of Geodesy and Geody-namics,2009,(3):50-54)
    12熊晶,等.汶川地震前电离层NmF2异常扰动[J].大地测量与地球动力学,2008,(6):22-26.(Xiong Jing,etal.Anomalous disturbance of ionospheric NmF2 beforeWenchuan earthquake[J].Journal of Geodesy and Geody-namics,2008,(6):22-26)
    13熊晶,周义炎,吴云.玉树Ms7.1地震前电离层VTEC异常[J].大地测量与地球动力学,2010,(5):24-27.(Xiong Jing,Zhou Yiyan and Wu Yun.Ionospheric VTECanomaly detected by ground-based GNSS beforeMs7.1Yushu earthquake[J].Journal of Geodesy and Geodynam-ics,2010,(5):24-27)