气候变化领域集成服务门户(CCPortal): Imaging Poisson's Ratio of the Uppermost Mantle beneath China

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DOI	10.1785/0120090024
	Imaging Poisson's Ratio of the Uppermost Mantle beneath China
	Pei, Shunping; Sun, Youshun; Toksoez, M. Nafi; Chen, Yongshun John; Gao, Xing; Wang, Zhi; Zhao, Junmeng; Liu, Hongbing
通讯作者	Pei, SP (通讯作者)
发表日期	2011
ISSN	0037-1106
EISSN	1943-3573
起始页码	1452
结束页码	1461
卷号	101 期号:3
英文摘要	We have obtained a Poisson's ratio image of the uppermost mantle beneath China by performing tomographic inversion of travel-time differences between Sn and Pn. The arrival pairs were selected from the Annual Bulletin of Chinese Earthquakes from 1985 to 2007 and from the International Seismological Center (ISC) data set between 1985 and 2005. The data include 58,663 arrival pairs from 10,486 earthquakes recorded at 204 stations. The average Poisson's ratio is 0.266. The preliminary tomographic results show that (1) the pseudowave velocity is high and the velocity ratio (V-P/V-S) and Poisson's ratio are low in the stable cratons around the Tibetan Plateau such as the Tarim and Junggar basins, the Ordos craton, and the southern region of the Sichuan basin; (2) a low pseudowave velocity and high velocity ratio and Poisson's ratio exist in the central and northern Tibetan Plateau, the North-South Seismic Zone, and north China; and (3) the high velocity ratio and Poisson's ratio region in the Tibetan Plateau extends to the surrounding cratons, suggesting that the uplift of the Tibetan Plateau results from a high Poisson's ratio or partially melted rocks beneath the plateau and that the softer rocks have intruded into the upper mantle of surrounding cratons.
关键词	TRAVEL-TIME TOMOGRAPHY TIBETAN PLATEAU VELOCITY STRUCTURE CONTINENTAL COLLISION SURROUNDING REGIONS PN TOMOGRAPHY CALIFORNIA EVOLUTION INVERSION ASIA
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000291029700039
来源期刊	BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
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/257941
推荐引用方式 GB/T 7714	Pei, Shunping,Sun, Youshun,Toksoez, M. Nafi,et al. Imaging Poisson's Ratio of the Uppermost Mantle beneath China[J]. 中国科学院青藏高原研究所,2011,101(3).
APA	Pei, Shunping.,Sun, Youshun.,Toksoez, M. Nafi.,Chen, Yongshun John.,Gao, Xing.,...&Liu, Hongbing.(2011).Imaging Poisson's Ratio of the Uppermost Mantle beneath China.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,101(3).
MLA	Pei, Shunping,et al."Imaging Poisson's Ratio of the Uppermost Mantle beneath China".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 101.3(2011).