Coupling between different layers of the lithosphere under horizontal drag underneath

doi:10.1360/03dz0004

CSpace

	Coupling between different layers of the lithosphere under horizontal drag underneath
	Ning, JY ; Zhang, SX ; Wang, SG ; Wei, RQ ; Liang, GP
	2003-10-01
发表期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN	1006-9313
卷号	46 页码:41-55
摘要	Based on a layered rheological model of the lithosphere, the velocity and stress distributions in the lithosphere under horizontal drag underneath were calculated using viscoelastic finite element method of plain strain with finite deformation. In the simulation, different conditions of drag and blocking were assumed to study their influences on the stress distribution and the coupling between different layers. Blocking depth has little influence on the stress level in the whole area and the coupling between different layers, but influences the stress state in the area around the blocking. The area covered by the high stress anomaly becomes larger when the blocking depth becomes deeper, but the magnitude of the value of the maximum shear stress decreases. The greater the viscosity differences between different layers of the lithosphere, the greater the possibility of decoupling between them. Under the drag of normal mantle convection (the convection velocity is about 20 cm (.) a(-1)), a lithosphere with a rheological structure similar to that of North China could not have decoupling between different layers, while could have stress distribution with magnitude of several MPa to tens of MPa and could have anomalous areas with stress accumulation if the geological structure is complicated.
关键词	continental dynamics lithosphere rheological layering coupling between different layers
DOI	10.1360/03dz0004
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000186555200004
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.amss.ac.cn/handle/2S8OKBNM/18407
专题	中国科学院数学与系统科学研究院
通讯作者	Zhang, SX
作者单位	1.Peking Univ, Dept Geophys, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Math Inst, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Ning, JY,Zhang, SX,Wang, SG,et al. Coupling between different layers of the lithosphere under horizontal drag underneath[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2003,46:41-55.
APA	Ning, JY,Zhang, SX,Wang, SG,Wei, RQ,&Liang, GP.(2003).Coupling between different layers of the lithosphere under horizontal drag underneath.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,46,41-55.
MLA	Ning, JY,et al."Coupling between different layers of the lithosphere under horizontal drag underneath".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 46(2003):41-55.