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《Journal of Seismological Research》 2009-03
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Research on Dynamic Evolution Characteristics of Geomagnetic Field in Chinese Mainland before and after Wenchuan M_S8.0 Earthquake

ZHANG Jian-guo1,2,LIU Xiao-can3,TANG Ting-mei4,MA Jun-zhao5(1.College of Geoexploration Science and Technology,Jilin University,Changchun 130026,Jilin,China)(2.Handan central seismic station,Earthquake Administration of Hebei Province,Handan 056006,Hebei,China)(3.Institute of Geophysics,CEA,Beijing 100081,China)(4.Earthquake Administration of Shandong Province,Jinan 250014,Shandong,China)(5.Earthquake Administration of Tianjin Municipality,Tianjin 300201,China)  
On the basis of the mid-night mean value from China Geomagnetic Observation Network,we establish the dynamic model of geomagnetic field variation by parallel computing technology.Then we study the characteristics of the dynamic geomagnetic variation of anomalous field before and after the Wenchuan MS8.0 earthquake on May 12,2008 in Chinese mainland.The result shows that the geomagnetic anomalous field changes significantly in different stages.This may reflect the earthquake-preparation characteristics in different stages.
【Fund】: 国家科技支撑课题“卫星电磁数据处理与应用技术研究(2008BAC35B01)”;; 中央级公益性科研院所基本科研业务费专项“卫星资料地震前兆信息研究及在震情跟踪中的应用(058904)”联合资助
【CateGory Index】: P318.5
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