气候变化领域集成服务门户(CCPortal): Upper Mantle Deformation of the Terror Rift and Northern Transantarctic Mountains in Antarctica: Insight From P Wave Anisotropic Tomography

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DOI	10.1029/2019GL086511
	Upper Mantle Deformation of the Terror Rift and Northern Transantarctic Mountains in Antarctica: Insight From P Wave Anisotropic Tomography
	Zhang, Heng; Zhao, Dapeng; Ju, Changhui; Li, Yunyue Elita; Li, Guohui; Ding, Min; Chen, Shuze; Zhao, Junmeng
通讯作者	Zhang, H (通讯作者)
发表日期	2020
ISSN	0094-8276
EISSN	1944-8007
卷号	47 期号:9
英文摘要	A large number of teleseismic traveltime data are used to determine the first P-wave radial anisotropy tomography beneath the Terror Rift, the northern Transantarctic Mountains (NTAM) and the Wilkes Subglacial Basin in Antarctica. Our results show that variations of radial anisotropy occur in both horizontal and vertical directions. In the NTAM, a high-velocity zone with positive radial anisotropy is revealed at shallower depths, which reflects the lithospheric deformation pattern formed during the Ross Orogeny. In contrast, negative radial anisotropy appears at depths >200 km under the NTAM, which is caused by the characterization of olivine fabric rather than foundering lithosphere. Beneath the western Wilkes Subglacial Basin, a two-layer lithosphere exists that contains rift-induced cracks. To the east of the NTAM, asthenospheric upwelling occurs at shallow depths beneath the Terror Rift. Then the upwelling asthenosphere flows northward to Mount Melbourne and southward to Mount Erebus.
关键词	LITHOSPHERE-ASTHENOSPHERE BOUNDARY SOUTH VICTORIA LAND SEISMIC ANISOTROPY STRUCTURE BENEATH AZIMUTHAL ANISOTROPY SKS SURFACE CONSTRAINTS VELOCITIES
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000536639500057
来源期刊	GEOPHYSICAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259906
推荐引用方式 GB/T 7714	Zhang, Heng,Zhao, Dapeng,Ju, Changhui,et al. Upper Mantle Deformation of the Terror Rift and Northern Transantarctic Mountains in Antarctica: Insight From P Wave Anisotropic Tomography[J]. 中国科学院青藏高原研究所,2020,47(9).
APA	Zhang, Heng.,Zhao, Dapeng.,Ju, Changhui.,Li, Yunyue Elita.,Li, Guohui.,...&Zhao, Junmeng.(2020).Upper Mantle Deformation of the Terror Rift and Northern Transantarctic Mountains in Antarctica: Insight From P Wave Anisotropic Tomography.GEOPHYSICAL RESEARCH LETTERS,47(9).
MLA	Zhang, Heng,et al."Upper Mantle Deformation of the Terror Rift and Northern Transantarctic Mountains in Antarctica: Insight From P Wave Anisotropic Tomography".GEOPHYSICAL RESEARCH LETTERS 47.9(2020).