气候变化领域集成服务门户(CCPortal): Tomographic Pn and Sn velocity beneath the continental collision zone from Alps to Himalaya

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DOI	10.1029/2010JB007845
	Tomographic Pn and Sn velocity beneath the continental collision zone from Alps to Himalaya
	Pei, Shunping; Sun, Youshun; Toksoez, M. Nafi
通讯作者	Pei, SP (通讯作者)
发表日期	2011
ISSN	2169-9313
EISSN	2169-9356
卷号	116
英文摘要	We have obtained Vp and Vs velocity images of the uppermost mantle beneath the continental collision zone from the Alps to the Himalaya by performing tomographic inversion using both Pn and Sn travel times. 654,999 Pn arrivals and 121,838 Sn arrivals were selected from the joint database including ISC/EHB, Iran bulletin and the Annual Bulletin of Chinese Earthquakes. Average Pn and Sn velocities are 8.04 km/s and 4.60 km/s, respectively, and maximum velocity perturbations are about 6%. Pn velocity correlates well with topography. In general, mountains, with high elevations, show low velocity, while the seas, basins and plains with low elevations show high velocity because the mountains are collision zones with strong tectonic activity and the low elevation areas are stable plates. The large tectonic lines are boundaries between high and low Pn velocity, such as plate boundaries, sutures and faults between plates and orogens. Sn velocity shows a very similar pattern to Pn velocity. A geodynamic cartoon is proposed to show the relationship between velocity and tectonics, indicating that the sutures are boundaries with high dip angles and the plate boundaries are low angle reverse faults in the region.
关键词	TURKISH-IRANIAN PLATEAU SURFACE-WAVE DISPERSION TRAVEL-TIME TOMOGRAPHY UPPER-MANTLE SURROUNDING REGIONS NORTH-AFRICA MIDDLE-EAST LITHOSPHERIC STRUCTURE CRUSTAL STRUCTURE TIBETAN PLATEAU
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000296151800001
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
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/257870
推荐引用方式 GB/T 7714	Pei, Shunping,Sun, Youshun,Toksoez, M. Nafi. Tomographic Pn and Sn velocity beneath the continental collision zone from Alps to Himalaya[J]. 中国科学院青藏高原研究所,2011,116.
APA	Pei, Shunping,Sun, Youshun,&Toksoez, M. Nafi.(2011).Tomographic Pn and Sn velocity beneath the continental collision zone from Alps to Himalaya.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,116.
MLA	Pei, Shunping,et al."Tomographic Pn and Sn velocity beneath the continental collision zone from Alps to Himalaya".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 116(2011).