气候变化领域集成服务门户(CCPortal): Q(0) tomography of S wave attenuation in Sichuan-Yunnan and adjacent regions

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	Q(0) tomography of S wave attenuation in Sichuan-Yunnan and adjacent regions
	Ma Hong-Sheng; Wang Su-Yun; Pei Shun-Ping; Liu Jie; Hua Wei; Zhou Long-Quan
发表日期	2007
ISSN	0001-5733
起始页码	465
结束页码	471
卷号	50 期号:2 页码:119-121
英文摘要	We have selected 27530 ML amplitude readings from 5897 events recorded by 149 stations, as reported in the Annual Bulletin of Chinese Earthquakes (ABCE) and regional seismic network of Yunnan province and Sichuan province, and have used tomographic imaging to estimate the lateral variations of the quality factor Q(0) (Q at 1 Hz) in the crust of Sichuan-Yunnan and its adjacent regions. Estimated, Q0 values vary from 200 to 600 with an average of 400. Q(0) values are consistent with tectonic and topographic structure. Q0 is low in the active tectonic regions having many faults, such as the Haiyuan-Qilian, Fenhe-Weihe, East Kunlun zones, Western Sichuan-Northwestern Yunnan-Baoshan area and joint of Yunnan and Guizhou-Kunming-Simao area. Q(0) is high in the stable regions, such as Sichuan Basin, Markam block, Western Guangxi-Eastern Yunnan block, Ordos Craton and Qinling-Dabie area. Additionally, The gains of most of the station terms in Sichuan-Yunnan and its adjacent regions are near 1.0, only a few as large as 2.0, and the distribution is irregular. Most of the magnitude biases are less than 0.3, only a few as large as 0.4, and the distribution has relation with the Q(0) values distribution, which means that the crustal attenuation has influence on the magnitude measurement.
关键词	LG CODA ATTENUATION UPPER-MANTLE NORTH CHINA CRUST
英文关键词	Sichuan-Yunnan; S wave attenuation; amplitude and period; tomography
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000245399900018
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/55718
推荐引用方式 GB/T 7714	Ma Hong-Sheng,Wang Su-Yun,Pei Shun-Ping,et al. Q(0) tomography of S wave attenuation in Sichuan-Yunnan and adjacent regions[J]. 中国科学院青藏高原研究所,2007,50(2):119-121.
APA	Ma Hong-Sheng,Wang Su-Yun,Pei Shun-Ping,Liu Jie,Hua Wei,&Zhou Long-Quan.(2007).Q(0) tomography of S wave attenuation in Sichuan-Yunnan and adjacent regions.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(2),119-121.
MLA	Ma Hong-Sheng,et al."Q(0) tomography of S wave attenuation in Sichuan-Yunnan and adjacent regions".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.2(2007):119-121.