Joint establishment of the geomagnetic model for mainland China based on CHAMP satellite and surface vector data

doi:10.6038/cjg20170702

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Joint establishment of the geomagnetic model for mainland China based on CHAMP satellite and surface vector data
	Feng Yan 1,2; Sun Han 3; Jiang Yong 1; An Zhen-Chang 4; Jiang Yi 1; Liu Bao-Jia 1; Huang Ya 2; Zhang Hua 1; Wu Ye-Wen 1
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2017-07-01
卷号	60 期号:7 页码:2522-2533
关键词	Geomagnetic field Joint modeling Spherical Cap Harmonic model Chinese Meridian project CHAMP satellite CM4 IGRF12
ISSN号	0001-5733
DOI	10.6038/cjg20170702
文献子类	Article
英文摘要	We firstly made a pre-processing to vector data of magnetism from surface observational stations and CHAMP satellite, along with newest 12 Chinese Meridian Project observations; then put all data into a specific time point by the 12th generation International Reference Field (IGRF12) model. Moreover, the external fields that include the main field, ionospheric field, magnetospheric field, their induced field, and the weak toroidal magnetic field were respectively removed by IGRF12 and the 4th generation Comprehensive Model (CM4) models. Finally, the China lithospheric field (elements X, Y, Z and F) model (SCH2000) was created by the spherical cap harmonic model, and the China geomagnetic field (CGRF2000) was created by IGRF12. During the modeling process, the effects from the altitude term, the selection of truncation level and the control of boundary were seriously considered. In terms of comparison of the Root-Mean-Square (RMS) error and so on, the SCH2000 with degree 8 was thought to be an ideal joint model to describe the lithospheric field over China, which were also compared with models like SCH1936, CM4 and Taylor polynomial. We found that their results, to some degrees, are consistent.. In view of location and intensity, SCH2000 reflects the lithospheric field more precisely compared to other regional models. Some differences between SCH2000 and CM4 mainly result from the measuring data and truncation level. Comparison shows the variations with altitudes are close between SCH2000 and CM4. As for the distributions of magnetic fields, there is also a good consistence between CGRF2000 and IGRF12 models.
WOS关键词	LITHOSPHERIC MAGNETIC-FIELD ; CAP HARMONIC-ANALYSIS
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000405160100002
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/93170]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者	Feng Yan
作者单位	1.Nanjing Univ Informat Sci & Technol, Inst Space Weather, Nanjing 210044, Peoples R China 2.Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China 3.Xintianyuan Inst Disaster Prevent & Reduct, Inner Mongolia 010051, Hohhot, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Feng Yan,Sun Han,Jiang Yong,et al. Joint establishment of the geomagnetic model for mainland China based on CHAMP satellite and surface vector data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2017,60(7):2522-2533.
APA	Feng Yan.,Sun Han.,Jiang Yong.,An Zhen-Chang.,Jiang Yi.,...&Wu Ye-Wen.(2017).Joint establishment of the geomagnetic model for mainland China based on CHAMP satellite and surface vector data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,60(7),2522-2533.
MLA	Feng Yan,et al."Joint establishment of the geomagnetic model for mainland China based on CHAMP satellite and surface vector data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 60.7(2017):2522-2533.