A high resolution lithospheric magnetic field model over China

查看全文 作　　者：OU [1,2]JiaMing;DU [1]AiMin;E.TH[3]BAULT;XU [1]WenYao;TIAN [1]XiaoBo;ZHANG [4]TieLong

机构地区：[1]Institute of Geology and Geophysics,Chinese Academy of Sciences;[2]Graduate University of Chinese Academy of Sciences;[3]Equipe de Géomagnétisme,Institut de Physique du Globe de Paris,Sorbonne 4 Paris Cité,INSU/CNRS,1 rue Jussieu,75005 Paris,France;[4]Space Research Institute,Austrian Academy of Sciences

出　　处：《Science China Earth Sciences》索引2013年第56卷第10期,共10页

基　　金：supported by National Natural Science Foundation of China(Grant Nos.41174122;40890163&41031066);OPWSRP(Grant No.201005017) 摘　　要：CHAMP satellite data and ground-based magnetic observations are used and combined to map the lithospheric magnetic field over China by means of the revised spherical cap harmonic analysis(R-SHCA)modeling technique.The magnetic field is described to a spatial resolution of 150 km at the mean Earth’s radius,which represents a good compromise between the resolutions afforded by surface and satellite data.We compare the magnetic anomalies modeled at the regional scale with composite regions containing large-scale of tectonic structures.These regions,including the Tarim Basin and the Tibetan Plateau,are correlated with regional magnetic anomalies at satellite altitude but contain a significant number of small-scale and complex magnetic structures at the mean Earth’s radius.These magnetic anomalies are globally consistent with the known geological features in China but also offer a way to delineate the contours of the geological blocks and to discuss the connection between magnetic anomalies and the heat flow distribution in this region. 关键词：磁场模型高分辨率岩石圈中国区域磁异常卫星数据建模技术平均半径

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A high resolution lithospheric magnetic field model over China

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