Nearest offset design for Multichannel Analysis of Surface Waves (MASW) method with buried source excitations

doi:10.6038/cjg2018L0285

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院油气资源研究重点实验室

	Nearest offset design for Multichannel Analysis of Surface Waves (MASW) method with buried source excitations
	Liu Kang 1,2,3,4; Dai KaoShan 4,5; Xu Qiang 5; Weng YuFeng 4; Huang LiGuan 4; Zhao Xiao 4; You QingYu 1,2,3
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2018-06-01
卷号	61 期号:6 页码:2421-2432
关键词	MASW Rayleigh wave Buried source Nearest offset Ray theory
ISSN号	0001-5733
DOI	10.6038/cjg2018L0285
英文摘要	Multichannel Analysis of Surface Waves (MASW) method, has found wide applications in shallow exploration for civil and earthquake engineering. One interesting problem associated with the application of MASW method is how to select the geophone' s nearest offset. The nearest offset is a key parameter that controls the near-field effect, so it affects the dispersion image's resolution and the inversion results. This paper studies the propagation of Rayleigh waves generated by buried source and develops an empirical equation for the nearest offset estimation based on the Ray theory, which is verified by numerical simulation. A case study at a site close to a subway line is implemented with the guidance of the proposed empirical equation. The one dimensional shear velocity structure, obtained by a joint inversion of both fundamental and higher modes, shows a clear correlation with the given geologic features. Therefore, the proposed nearest offset estimation method is recommended in the real-world application of MASW method for cases as Rayleigh waves are generated by a buried source.
WOS关键词	MICROTREMOR SURVEY ; RAYLEIGH-WAVES ; VELOCITY ; VIBRATIONS ; SOIL ; SEISMOLOGY ; TUNNELS ; SUBWAY ; DEPTH ; FIELD
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000435427300022
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/88178]
专题	地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者	Xu Qiang
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai 200092, Peoples R China 5.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm, Chengdu 610059, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Liu Kang,Dai KaoShan,Xu Qiang,et al. Nearest offset design for Multichannel Analysis of Surface Waves (MASW) method with buried source excitations[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(6):2421-2432.
APA	Liu Kang.,Dai KaoShan.,Xu Qiang.,Weng YuFeng.,Huang LiGuan.,...&You QingYu.(2018).Nearest offset design for Multichannel Analysis of Surface Waves (MASW) method with buried source excitations.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(6),2421-2432.
MLA	Liu Kang,et al."Nearest offset design for Multichannel Analysis of Surface Waves (MASW) method with buried source excitations".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.6(2018):2421-2432.