气候变化领域集成服务门户(CCPortal): Urban Near-Surface Seismic Monitoring Using Distributed Acoustic Sensing

CCPortal

DOI	10.1029/2019GL086115
	Urban Near-Surface Seismic Monitoring Using Distributed Acoustic Sensing
	Fang G.; Li Y.E.; Zhao Y.; Martin E.R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Urban subsurface monitoring requires high temporal-spatial resolution, low maintenance cost, and minimal intrusion to nearby life. Distributed acoustic sensing (DAS), in contrast to conventional station-based sensing technology, has the potential to provide a passive seismic solution to urban monitoring requirements. Based on data recorded by the Stanford Fiber Optic Seismic Observatory, we demonstrate that near-surface velocity changes induced by the excavation of a basement construction can be monitored using existing fiber optic infrastructure in a noisy urban environment. To achieve satisfactory results, careful signal processing comprising of noise removal and source signature normalization are applied to raw DAS recordings. Repeated blast signals from quarry sites provide free, unidirectional, and near-impulsive sources for periodic urban seismic monitoring, which are essential for increasing the temporal resolution of passive seismic methods. Our study suggests that DAS will likely play an important role in urban subsurface monitoring. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Fiber optics; Monitoring; Seismology; Signal processing; Acoustic sensing; Near surfaces; passive seismic; Seismic monitoring; Sensing technology; Subsurface monitoring; Temporal resolution; Urban environments; Urban growth; detection method; seismic method; seismology; signal processing; urban area
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170555
作者单位	Department of Civil and Environmental Engineering, National University of Singapore, Singapore; Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao Institute of Marine Geology, Qingdao, China; Department of Mathematics, Program in Computational Modeling and Data Analytics, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
推荐引用方式 GB/T 7714	Fang G.,Li Y.E.,Zhao Y.,et al. Urban Near-Surface Seismic Monitoring Using Distributed Acoustic Sensing[J],2020,47(6).
APA	Fang G.,Li Y.E.,Zhao Y.,&Martin E.R..(2020).Urban Near-Surface Seismic Monitoring Using Distributed Acoustic Sensing.Geophysical Research Letters,47(6).
MLA	Fang G.,et al."Urban Near-Surface Seismic Monitoring Using Distributed Acoustic Sensing".Geophysical Research Letters 47.6(2020).