2003年中国及邻区地磁场模型的计算与分析  

COMPUTATION AND ANALYSIS OF THE GEOMAG-NETIC FIELD MODEL IN CHINA AND ITS ADJACENT AREA FOR 2003

作　　者：顾左文[1] 安振昌[1] 高金田[1] 詹志佳[1] 姚同起[1] 韩炜[1] 陈斌[1] 

机构地区：[1]中国地震局地球物理研究所,中国北京100081

出　　处：《地震学报》2006年第2期141-149,共9页Acta Seismologica Sinica

基　　金：中国科技部社会公益性专项项目(2001DIA10002/2002DIB10043);中国地震局重点项目"中国地磁图(2005.5)编制"资助

摘　　要：根据2003年中国地区的135个测点和35个台站的地磁数据,建立了2003年中国及邻区地磁场泰勒多项式模型和球冠谐模型.在模型计算过程中,细致地分析了模型的截断阶数和边界约束对模型计算的影响.结果表明,所使用的地磁观测资料是准确可靠的,模型截断阶数的选取是合理的.本文所建立的中国区域地磁场球冠谐模型与泰勒多项式模型具有良好的一致性.Based on the geomagnetic data at 135 stations and 35 observatories in China in 2003, the Taylor polynomial model and the spherical cap harmonic model in China and its adjacent area for 2003 were established. In the model calculation, the truncation order of the model and the influences of the boundary restriction on the model calculation were carefully analyzed. The results show that the geomagnetic data used are precise and reliable, and the selection of the truncation order is reasonable. The Taylor polynomial model and the spherical cap harmonic model in China and its adjacent area established in this paper are consistent very well.

关 键 词：地磁场模型计算 泰勒多项式模型 球冠谐模型 

分 类 号：P318.1[天文地球—固体地球物理学]