On the Amplitude Discrepancy of HVSR and Site Amplification from Strong-Motion Observations

doi:10.1785/0120170118

	On the Amplitude Discrepancy of HVSR and Site Amplification from Strong-Motion Observations
	Rong, Mianshui 1,2; Fu, Li-Yun 3; Li, Xiaojun 4
刊名	BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
	2017-12-01
卷号	107 期号:6 页码:2873-2884
ISSN号	0037-1106
DOI	10.1785/0120170118
文献子类	Article
英文摘要	The horizontal-to-vertical spectral ratio (HVSR) method is an efficient tool for determining the resonant frequency of engineering sites. However, there appears to be no consensus on whether HVSR amplitude indicates the absolute amplification at the location of the measurements. Here, we discuss the basic assumption of the HVSR method with respect to its applicability to site amplification via earthquake ground motions. We have also introduced the empirical transfer function (ETF), defined as the ratio of the records at the surface to the records at the borehole site, as a comparison to HVSR, in order to describe the site amplification of vertical borehole arrays. The amplitude discrepancy between the HVSR and the ETF is explored on the basis of the S-wave recordings from three vertical borehole strong-motion arrays that have been conducted at three different locations: the Central United States Seismic Observatory in the central United States, the Garner Valley Downhole Array in southern California, and the KiK-net Ichinoseki-Nishi Vertical Array in West Ichinoseki, Japan. The results show that the amplitude discrepancy is primarily due to two factors, the vertical site response and the HVSR at the bedrock. The measurements from these strong-motion arrays demonstrate that the horizontal and vertical components at the firm substrate are not at all equal; however, their ratio is nearly constant and related to the bedrock velocity characteristics. Vertical site amplification occurring at these three sites can be interpreted via the borehole response of the vertical incident P-wave excitation. As an efficient and economical alternative to the traditional transfer function method, we can extract the S-wave transfer function from the surface HVSR, under the condition that the P-wave borehole response and the bedrock HVSR can be accurately evaluated.
WOS关键词	VALLEY DOWNHOLE ARRAY ; VERTICAL SPECTRAL RATIOS ; GROUND-MOTION ; SOUTHERN CALIFORNIA ; HALF-SPACE ; WAVES ; EARTHQUAKES ; MICROTREMOR ; NOISE ; TOOL
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SEISMOLOGICAL SOC AMER
WOS记录号	WOS:000416523800024
资助机构	National Natural Science Foundation of China(U1434210 ; National Natural Science Foundation of China(U1434210 ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; 51421005) ; 51421005) ; National Natural Science Foundation of China(U1434210 ; National Natural Science Foundation of China(U1434210 ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; 51421005) ; 51421005) ; National Natural Science Foundation of China(U1434210 ; National Natural Science Foundation of China(U1434210 ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; 51421005) ; 51421005) ; National Natural Science Foundation of China(U1434210 ; National Natural Science Foundation of China(U1434210 ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Chinese Academy of Sciences Strategic Leading Science and Technology projects(XDB10010400) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; Ministry of Human Resources and Social Security of the People's Republic of China(2016-06) ; 51421005) ; 51421005)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82373]
专题	中国科学院地质与地球物理研究所
通讯作者	Rong, Mianshui
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 2.China Earthquake Adm, Inst Crustal Dynam, 1 Anningzhuang Rd, Beijing 100085, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, 19 Beitucheng Western Rd, Beijing 100029, Peoples R China 4.China Earthquake Adm, Inst Geophys, 5 Minzudaxue Nanlu, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Rong, Mianshui,Fu, Li-Yun,Li, Xiaojun. On the Amplitude Discrepancy of HVSR and Site Amplification from Strong-Motion Observations[J]. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,2017,107(6):2873-2884.
APA	Rong, Mianshui,Fu, Li-Yun,&Li, Xiaojun.(2017).On the Amplitude Discrepancy of HVSR and Site Amplification from Strong-Motion Observations.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,107(6),2873-2884.
MLA	Rong, Mianshui,et al."On the Amplitude Discrepancy of HVSR and Site Amplification from Strong-Motion Observations".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 107.6(2017):2873-2884.