The spectral theoty of electric and magnetic fields in a three dimensional inhomogeneous mantle (II) - A perturbation of gradually lateral variation and rapid diffusion of poloidal field

	The spectral theoty of electric and magnetic fields in a three dimensional inhomogeneous mantle (II) - A perturbation of gradually lateral variation and rapid diffusion of poloidal field
	Ma, SZ
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	1999-05-01
卷号	42 期号:3 页码:322-332
关键词	electric conducting mantle lateral inhomogeneity electromagnetic field
ISSN号	0001-5733
英文摘要	It is one of the classical problems in Earth's electromagnetism that continuation of the observatory data of magnetic field into the conducting region. This paper built the coupling vector equations governing the poloidal, toroidal and potential fields in 3-D inhomogeneous conducting mantle. Considering the limitation on variable scale of inhomogeneities in global mantle from study of the Earth's deep interior, a perturbation theory of gradually lateral variation was presented. It is unnecessary that the 1-D spherical symmetric distribution of electric conductivity as zero-degree approximation. Serving as a example of solvability of the zero-degree approximation, it was demonstrated how the gradually lateral variation of electric conductivity effect on anti-diffusive problem of poloidal field in Earth's mantel.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000083223700005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75286]
专题	中国科学院地质与地球物理研究所
通讯作者	Ma, SZ
作者单位	Chinese Acad Sci, Inst Geophys, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Ma, SZ. The spectral theoty of electric and magnetic fields in a three dimensional inhomogeneous mantle (II) - A perturbation of gradually lateral variation and rapid diffusion of poloidal field[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,1999,42(3):322-332.
APA	Ma, SZ.(1999).The spectral theoty of electric and magnetic fields in a three dimensional inhomogeneous mantle (II) - A perturbation of gradually lateral variation and rapid diffusion of poloidal field.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,42(3),322-332.
MLA	Ma, SZ."The spectral theoty of electric and magnetic fields in a three dimensional inhomogeneous mantle (II) - A perturbation of gradually lateral variation and rapid diffusion of poloidal field".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 42.3(1999):322-332.