Studies on a persistent localized microseism source that produces precursors on noise correlation function observed using stations in central-eastern China

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	Studies on a persistent localized microseism source that produces precursors on noise correlation function observed using stations in central-eastern China
	Wang, Wei-Tao ; Ni, Si-Dao ; Wang, Bao-Shan
刊名	Chinese Journal of Geophysics-Chinese Edition
	2012
卷号	55 期号:2 页码:503-512
中文摘要	We calculated the cross correlation function (NCF) for each station pair using vertical component of 430 broadband stations in middle-eastern China from 2008 to 2009. Very strong precursors before Rayleigh wave are observed in most NCFs, which are persistent within two years. These signals last for about 50 s and peak from 0.07 Hz to 0.12 Hz in spectrum. The arrival times of these precursors are constant for same station pair but vary with different station pair, which indicates these signals may origin from a persistent localized microseism source. Triangulation location using grid search method indicates that they are generated around Kyushu island of Japan, assuming a homogeneous propagation velocity of 2.7 km/s. This location result is further verified by comparing synthetic NCFs with observations. Special attentions should be paid to minimize possible errors caused by these precursors for studies based on ambient seismic noise. The physical mechanism of this microseism source remains to be studied.
学科主题	EARTH SCIENCES
原文出处	://CCC:000301332500013
公开日期	2012-04-11
内容类型	期刊论文
源URL	[http://ir.whigg.ac.cn/handle/342008/3321]
专题	测量与地球物理研究所_其他_期刊论文
推荐引用方式 GB/T 7714	Wang, Wei-Tao,Ni, Si-Dao,Wang, Bao-Shan. Studies on a persistent localized microseism source that produces precursors on noise correlation function observed using stations in central-eastern China[J]. Chinese Journal of Geophysics-Chinese Edition,2012,55(2):503-512.
APA	Wang, Wei-Tao,Ni, Si-Dao,&Wang, Bao-Shan.(2012).Studies on a persistent localized microseism source that produces precursors on noise correlation function observed using stations in central-eastern China.Chinese Journal of Geophysics-Chinese Edition,55(2),503-512.
MLA	Wang, Wei-Tao,et al."Studies on a persistent localized microseism source that produces precursors on noise correlation function observed using stations in central-eastern China".Chinese Journal of Geophysics-Chinese Edition 55.2(2012):503-512.