| ????Ms7.1??????????VTEC?? |
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| 引用本文： | 熊晶,周义炎,吴云.????Ms7.1??????????VTEC??[J].大地测量与地球动力学,2010,30(5):24-27. |
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| 作者姓名： | 熊晶 周义炎 吴云 |
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| 作者单位： | 1. 中国地震局地震研究所,武汉,430071;地壳运动与地球观测实验室,武汉,430071
2. 中国地震局地震研究所,武汉,430071;地壳运动与地球观测实验室,武汉,430071;武汉大学测绘学院,武汉,430079 |
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| 基金项目： | 国家科技支撑项目，国家"863"计划课题，中国地震局地震研究所所长基金 |
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| 摘 要： | ?????й???????????????GNSS???????????????????2010??4??14??????Ms7.1????????и???4??GNSS??????LHAS??LUZH??DLHA??WUSH??????TEC?????????????й???TEC??????????????????????TEC??????????????????LHAS??LUZH??WUSH???4??1????????????TEC?????????????LHAS??LUZH??DLHA???4??5???????????TEC?????????????TEC????????????????????5???????????????????????????й?????????
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| 关 键 词： | ?????????????VTEC?? ???????? ???? ??? GNSS |
IONOSPHERIC VTEC ANOMALY DETECTED BY GROUND-BASED GNSS BEFORE Ms7.1 YUSHU EARTHQUAKE |
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| Xiong Jing,Zhou Yiyan,Wu Yun.IONOSPHERIC VTEC ANOMALY DETECTED BY GROUND-BASED GNSS BEFORE Ms7.1 YUSHU EARTHQUAKE[J].Journal of Geodesy and Geodynamics,2010,30(5):24-27. |
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| Authors: | Xiong Jing Zhou Yiyan Wu Yun |
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| Institution: | 1) Institute of Seismology, CEA, Wuhan 430071 2) Crustal Movement Laboratory, Wuhan 4300713) School of Geodesy and Geomatics,Wuhan University,Wuhan 430079 |
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| Abstract: | Using vertical total electron content(VTEC) derived from the reference stations of Crustal Movement Observational Network of China to examine the ionospheric variations during the Ms7.1 Yushu earthquake occurred on April 14,2010,in China, the time series of TEC values over 4 GNSS stations(LHAS,LUZH,DLHA,WUSH) around the epicenter and the TEC values of 2D distribution over whole China was computed.The final results show that the ionospheric VTEC over 3 GNSS ststions(LHAS,LUZH,WUSH) increased in the afternoon of local time on April 1,and the VTEC values over 3 GNSS stations(LHAS,LUZH,DLHA) also increased in the midnight on April 5, both of these ionospheric anomalies drifted from east to west,and the latter acrossed the whole China. |
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| Keywords: | vertical total electron content ionospheric anomaly earthquake precursor Global Navigation Satellite System(GNSS) |
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