气候变化领域集成服务门户(CCPortal): Structure of the Upper Crust in Japan from S-Wave Attenuation Tomography

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DOI	10.1785/0120080029
	Structure of the Upper Crust in Japan from S-Wave Attenuation Tomography
	Pei, Shunping; Cui, Zhongxiong; Sun, Youshun; Toksoez, M. Nafi; Rowe, Charlotte A.; Gao, Xing; Zhao, Junmeng; Liu, Hongbing; He, Jiankun; Morgan, F. Dale
通讯作者	Pei, SP (通讯作者)
发表日期	2009
ISSN	0037-1106
起始页码	428
结束页码	434
卷号	99 期号:1
英文摘要	Seismic attenuation (Q-value) can be estimated by extracting the amplitude-frequency information contained in seismic waveforms. We apply the attenuation tomography method of Pei et al. (2006) using M(L) amplitude data to estimate attenuation within the upper crust in Japan. More than 60,000 Sg-wave maximum amplitude readings from 5559 events, recorded by 971 stations, were selected from the dense High-Sensitivity Seismography Network (Hi-net) under the condition that epicentral distance is less than 2 degrees and event depth is less than 10 km. The lateral S-wave Q variations of the upper crust at 1 Hz in Japan were obtained. The results indicate that low Q-values exist in the central Japanese islands, with almost the same distribution as volcanoes, while high Q-values exist mainly between the front of volcanoes and the Japanese east coast. In addition, a low Q was found between the eastern coast and the subducted trench. Most large crustal earthquakes occur in or around zones of low Q or the boundaries between areas of low and high Q, which will be very helpful in estimating the risk of large earthquakes.
关键词	STRUCTURE BENEATH AMPLITUDE TOMOGRAPHY P-WAVE EARTHQUAKES CHINA EVOLUTION DISTRICT SPECTRA REGIONS SURFACE
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000266181100036
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/257694
推荐引用方式 GB/T 7714	Pei, Shunping,Cui, Zhongxiong,Sun, Youshun,et al. Structure of the Upper Crust in Japan from S-Wave Attenuation Tomography[J]. 中国科学院青藏高原研究所,2009,99(1).
APA	Pei, Shunping.,Cui, Zhongxiong.,Sun, Youshun.,Toksoez, M. Nafi.,Rowe, Charlotte A..,...&Morgan, F. Dale.(2009).Structure of the Upper Crust in Japan from S-Wave Attenuation Tomography.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,99(1).
MLA	Pei, Shunping,et al."Structure of the Upper Crust in Japan from S-Wave Attenuation Tomography".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 99.1(2009).