气候变化领域集成服务门户(CCPortal): Near-surface site investigation by seismic interferometry using urban traffic noise in Singapore

CCPortal

DOI	10.1190/GEO2017-0798.1
	Near-surface site investigation by seismic interferometry using urban traffic noise in Singapore
	Zhang, Yunhuo; Li, Yunyue Elita; Zhang, Heng; Ku, Taeseo
通讯作者	Ku, T (通讯作者)
发表日期	2019
ISSN	0016-8033
EISSN	1942-2156
起始页码	B169
结束页码	B180
卷号	84 期号:2
英文摘要	We have evaluated a field test in the city of Singapore to assess the feasibility of the passive seismic survey for bedrock depth determination and to further investigate the optimal acquisition parameters. The ambient noise field, dominated by urban traffic noise, is recorded passively for the application of seismic interferometry. Spectral analysis indicates that the traffic-induced noise by local roads is concentrated between 3 and 25 Hz. We use multiple signal classification beamforming for wavefield direction of propagation analysis. We apply seismic interferometry to retrieve the surface-wave part of the Green's functions. based on which surface-wave dispersion relations are extracted and further inverted for 1D S-wave velocity profiles. Subsequently, we compare the inversion results from seismic interferometry with borehole logs at multiple sites in Singapore and establish that the bedrock depths are well-determined using passive seismic methods within a maximum error of 3 m. By investigating the convergence of the crosscorrelograms, we ascertain that the best compromise of cost, efficiency. and accuracy for a passive site investigation in Singapore can be achieved in 15 min in the morning of a working day using an array as short as 30 m with six vertical geophones, although these parameters should be reinvestigated at other sites and other times. The success of this case study demonstrates that accurate near-surface site investigation can be achieved with faster acquisition, fewer receivers, and a smaller acquisition footprint compared with conventional methods, all of which improve the efficiency particularly in a highly developed urban environment.
关键词	GENETIC ALGORITHMS CROSS-CORRELATION DISPERSION CURVE INVERSION DECONVOLUTION PROPAGATION ACCURACY PRESSURE DENSITY WAVES
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000462613600010
来源期刊	GEOPHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259434
推荐引用方式 GB/T 7714	Zhang, Yunhuo,Li, Yunyue Elita,Zhang, Heng,et al. Near-surface site investigation by seismic interferometry using urban traffic noise in Singapore[J]. 中国科学院青藏高原研究所,2019,84(2).
APA	Zhang, Yunhuo,Li, Yunyue Elita,Zhang, Heng,&Ku, Taeseo.(2019).Near-surface site investigation by seismic interferometry using urban traffic noise in Singapore.GEOPHYSICS,84(2).
MLA	Zhang, Yunhuo,et al."Near-surface site investigation by seismic interferometry using urban traffic noise in Singapore".GEOPHYSICS 84.2(2019).