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[1]YAO Xiuyi,TENG Yuntian.Variation of Geomagnetic Polarization Value Associated with the 2010 Yuanmou MS5.2 Earthquake[J].Journal of Seismological Research,2017,40(03):444-448.

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Variation of Geomagnetic Polarization Value Associated with the 2010 Yuanmou M_S5.2 Earthquake

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 40 Number of periods: 2017 03 Page number: 444-448 Column: 流动地磁专栏 Public date: 2017-07-20

Title:: Variation of Geomagnetic Polarization Value Associated with the 2010 Yuanmou M_S5.2 Earthquake

Author(s):: YAO Xiuyi¹; TENG Yuntian²; (1.Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)(2.Institute of Grophysics,China Earthquake Administration,Beijing 100081,China)

Keywords:: ULF; geomagnetic polarization; geomagnetic variation anomalies associated with earthquakes; coefficient of variation

CLC:: P318

DOI:: -

Abstract:: The geomagnetic data recorded by the Chuxiong,Yongsheng and Tonghai stations in Yunnan province before and after Yuanmou M_S5.2 earthquake in 2010 were analyzed with improved polarization method,and the coefficient of variation(CV)with polarization value was calculated.The results show that,there is an obvious enhancement of C_ZH in Chuxiong station in almost 3 months before the Yuanmou earthquake that occurred on 25 February 2010 and recovery on January 2010,and the anomaly reached 2～3 times of its normal levels,which may be caused by the vigorous fluctuation of vertical component.However,there was no similar variation exited in the other two stations.

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Last Update: 2017-07-20