Lg attenuation in northeast China using NECESSArray data

doi:10.1093/gji/ggu375

CORC > 北京大学 > 地球与空间科学学院

	Lg attenuation in northeast China using NECESSArray data
	Ranasinghe, Nishath R. ; Gallegos, Andrea C. ; Trujillo, Andrea R. ; Blanchette, Alexander R. ; Sandvol, Eric A. ; Ni, James ; Hearn, Thomas M. ; Tang, Youcai ; Grand, Stephen P. ; Niu, Fenglin ; Chen, Yongshun J. ; Ning, Jieyuan ; Kawakatsu, Hitoshi ; Tanaka, Satoru ; Obayashi, Masayuki
刊名	geophysical journal international
	2015
关键词	Tomography Heat flow Earthquake ground motions Seismicity and tectonics Guided waves Seismic attenuation Seismic tomography LATERAL VARIATIONS SURROUNDING REGIONS TIBETAN PLATEAU CRUSTAL STRUCTURE WAVE-PROPAGATION UNITED-STATES CODA-Q PHASE JAPAN SHIELD
DOI	10.1093/gji/ggu375
英文摘要	The 127 station NorthEast China Extended SeiSmic Array (NECESSArray) provides large quantities of high quality seismic data in northeast China that allow us to resolve lateral variations of Lg Q or crustal attenuation at 1 Hz (Q(o)) to 2.0. or greater. Using the reverse two-station/event method with 11 642 Lg path-amplitudes from 78 crustal earthquakes, we obtain a 2-D tomographic image of Lg Q(o) with values ranging from similar to 50 to 1400. A high degree of detail in the lateral variation of Lg attenuation is revealed in our tomographic image. High Q(o) regions are found in the Great Xing'an, Lesser Xing'an and Songen-Zhangguangcai Ranges. Low Q(o) regions are observed in the Songliao, Sanjiang and Erlian Basins. The lowest Q(o) is found near the Wudalianchi volcanic field and other Quaternary volcanic fields, the southern Songliao Basin, the western edge of the Erlian Basin and the Sanjiang Basin. Low Q(o) values are measured for paths that cross sedimentary basins with thick, unconsolidated sediments. Most of the high Lg attenuation in the Songliao Basin correlates reasonably well with low crustal Rayleigh wave phase velocity anomalies. The highest attenuating regions also correlate well with regions of Holocene volcanism.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000350041600006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geochemistry & Geophysics; SCI(E); EI; 5; ARTICLE; nrana001@nmsu.edu; 1; 67-76; 200
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/386691]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Ranasinghe, Nishath R.,Gallegos, Andrea C.,Trujillo, Andrea R.,et al. Lg attenuation in northeast China using NECESSArray data[J]. geophysical journal international,2015.
APA	Ranasinghe, Nishath R..,Gallegos, Andrea C..,Trujillo, Andrea R..,Blanchette, Alexander R..,Sandvol, Eric A..,...&Obayashi, Masayuki.(2015).Lg attenuation in northeast China using NECESSArray data.geophysical journal international.
MLA	Ranasinghe, Nishath R.,et al."Lg attenuation in northeast China using NECESSArray data".geophysical journal international (2015).