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Estimation of shallow subsurface S-wave velocity structure in urban area based on inversion of apparent dispersion curve

文献类型：期刊论文

作者You, Zhiwei1,4,5; Xu, Peifen1,4,5; Ling, Suqun2; Du, Yanan1,4,5; Zhang, Ruohan1,4,5; Yao, Jin3; Zhang, Hua3
刊名JOURNAL OF GEOPHYSICS AND ENGINEERING
出版日期2020-12-01
卷号17期号:6页码:940-955
ISSN号1742-2132
关键词apparent dispersion curve microtremor signals nonlinear inversion shallow S-wave velocity
DOI10.1093/jge/gxaa054
英文摘要Due to its efficiency, convenience, non-destructive nature and strong anti-interference capability, the microtremor survey method (MSM) has found wide applications in urban geological surveys. The spatial autocorrelation method is diffusely applied to extract the dispersion curves from microtremor signals, which needs to satisfy the assumption that the energy of the fundamental Rayleigh wave is dominant. However, for layered media containing a layer with a significant low- or high-velocity contrast, this assumption is distinctly incorrect for certain frequency ranges. We present a processing methodology comprising the extraction and inversion of the apparent dispersion curves based on extended spatial autocorrelation method and fast simulated-annealing algorithm. We analyse synthetic microtremor signals for three selected geological models, and then compare the S-wave velocity structures estimated from their inversions with the actual models. Subsequently, a filed data example is given to detect the shallow stratigraphic structures in Guangzhou city, China, in which the new MSM was used. The estimated two-dimensional S-wave velocity model provided an accurate description of the thickness and depth of the strata in the study area, based on a priori information. Moreover, the S-wave velocity structures estimated from the MSM and the results from the drilling match very well, indicating that MSM is a reliable geophysical technique in urban geological surveys. Combined with available borehole information, MSM can be a very robust and effective method for detecting the shallow three-dimensional velocity structures in an urban area.
WOS关键词MICROTREMOR SURVEY
资助项目Guangzhou Metro Design and Research Institute LimitedCompany[KY-2020-013] ; National Natural Science Foundation of China[41474044]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000608424800002
资助机构Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; Guangzhou Metro Design and Research Institute LimitedCompany ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/100011]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Xu, Peifen
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Geoanal Inst Co Ltd, Tokyo 18400012, Japan
3.Guangzhou Metro Design & Res Inst Co Ltd, Guangzhou 510010, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, CAS, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 You, Zhiwei,Xu, Peifen,Ling, Suqun,et al. Estimation of shallow subsurface S-wave velocity structure in urban area based on inversion of apparent dispersion curve[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2020,17(6):940-955.
APA You, Zhiwei.,Xu, Peifen.,Ling, Suqun.,Du, Yanan.,Zhang, Ruohan.,...&Zhang, Hua.(2020).Estimation of shallow subsurface S-wave velocity structure in urban area based on inversion of apparent dispersion curve.JOURNAL OF GEOPHYSICS AND ENGINEERING,17(6),940-955.
MLA You, Zhiwei,et al."Estimation of shallow subsurface S-wave velocity structure in urban area based on inversion of apparent dispersion curve".JOURNAL OF GEOPHYSICS AND ENGINEERING 17.6(2020):940-955.

入库方式： OAI收割

来源：地质与地球物理研究所

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