Asymmetry between the southern and northern hemispheres of the Earth

IGGCAS OpenIR

	Asymmetry between the southern and northern hemispheres of the Earth
	Ma, ZJ ; Song, XD ; Du, PR ; Fu, RS ; Sun, FP ; Wang, Y
	2002
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	45 期号:1 页码:26-33
文章类型	Article
摘要	Asymmetry between the southern and northern hemispheres of the Earth is further stated on the basis of new calculations, analyses and observations of space geodesy. The calculation of global thermal loss shows that the thermal loss of the southern hemisphere is more than that of the northern hemisphere by 33 %, while the thermal loss of the southern hemisphere mantle is the twice of that of the northern hemisphere. Comparing the S wave velocity distribution of the southern and northern hemispheres, we concluded that the upper mantle of the southern hemisphere is characterized by low velocity and high temperature, while the upper mantle of the northern hemisphere features high velocity and low temperature. The calculated "mass center" of the mantle's layers implies that the mass center of the Earth is to the northern hemisphere. The annual variations of the longitudinal and latitudinal circle lengths demonstrate that the southern hemisphere appears to be expanding, while the northern hemisphere looks like contracting. These two contract states can be confirmed by the data of space geodetic measurement. A trial explanation for the asymmetry of the Earth is delivered.
关键词	figure of the Earth asymmetry seismotectonic systems heat flow velocity of seismic wave space geodesy
WOS标题词	Science & Technology ; Physical Sciences
关键词[WOS]	HEAT-FLOW
收录类别	SCI
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000173551600004
出版者	SCIENCE CHINA PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.iggcas.ac.cn/handle/132A11/77994
专题	中国科学院地质与地球物理研究所
通讯作者	Ma, ZJ
作者单位	1.China Seismol Bureau, Inst Geol, Beijing 100029, Peoples R China 2.Univ Sci & Technol China, Dept Earth & Space Sci, Anhua 230026, Peoples R China 3.Zhengzhou Inst Geodesy, Dept Geodesy, Zhengzhou 400052, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Ma, ZJ,Song, XD,Du, PR,et al. Asymmetry between the southern and northern hemispheres of the Earth[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2002,45(1):26-33.
APA	Ma, ZJ,Song, XD,Du, PR,Fu, RS,Sun, FP,&Wang, Y.(2002).Asymmetry between the southern and northern hemispheres of the Earth.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,45(1),26-33.
MLA	Ma, ZJ,et al."Asymmetry between the southern and northern hemispheres of the Earth".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 45.1(2002):26-33.