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	Crustal S-wave Q estimated from M-L amplitude II: Q lateral variation in China
	Wang Su-Yun; Pei Shun-Ping; Hearn, Thomas M.; Xu Zhong-Huai; Ni, James F.; Yu Yan-Xiang
通讯作者	Wang, SY (通讯作者)
发表日期	2008
ISSN	0001-5733
起始页码	133
结束页码	139
卷号	51 期号:1
英文摘要	Over 54000 S wave amplitude and period data reported in the Annual Bulletin of Chinese Earthquakes (1984-2004) for M-L determination were used to study the S wave attenuation and the regional variation of crustal attenuation in China. A two-dimensional tomography method is adopted to find regional attenuation variation. We obtained an average Q(0) ( Q at 1 Hz) value of 370 for the entire studied region with regional fluctuations +/- 200. Features larger than 2 degrees in most parts of China are well resolved and map directly to geologic provinces. Regions with the lowest attenuation (high Q(0) values) are beneath the Tarim Basin, Sichuan Basin, Ordos Platform, and South China Block. These tend to be tectonically inactive regions that are generally dominated by intrusive and cratonic rocks in the upper crust. Regions with the highest attenuation (low Q(0) values) are beneath Bohai Basin, Sichuan-Yunnan, North China basin, and regions beneath the Tian Shan, Qilian Shan and Fenwei graben also have low Q(0) values. These are predominantly active basins and fold belts.
关键词	CODA ATTENUATION QUALITY FACTOR UPPER-MANTLE NORTH CHINA TOMOGRAPHY PROPAGATION
英文关键词	China continent; seismic attenuation; Q(0) value; amplitude tomography
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000252841900017
来源期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
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/257578
推荐引用方式 GB/T 7714	Wang Su-Yun,Pei Shun-Ping,Hearn, Thomas M.,et al. Crustal S-wave Q estimated from M-L amplitude II: Q lateral variation in China[J]. 中国科学院青藏高原研究所,2008,51(1).
APA	Wang Su-Yun,Pei Shun-Ping,Hearn, Thomas M.,Xu Zhong-Huai,Ni, James F.,&Yu Yan-Xiang.(2008).Crustal S-wave Q estimated from M-L amplitude II: Q lateral variation in China.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,51(1).
MLA	Wang Su-Yun,et al."Crustal S-wave Q estimated from M-L amplitude II: Q lateral variation in China".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 51.1(2008).