气候变化领域集成服务门户(CCPortal): Landslide characterization using active and passive seismic imaging techniques: a case study from Kerala, India

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DOI	10.1007/s11069-020-04369-y
	Landslide characterization using active and passive seismic imaging techniques: a case study from Kerala, India
	Chávez-García F.J.; Natarajan T.; Cárdenas-Soto M.; Rajendran K.
发表日期	2021
ISSN	0921030X
起始页码	1623
结束页码	1642
卷号	105 期号:2
英文摘要	The unusually intense precipitations of the 2018 monsoon triggered numerous landslides in the Western Ghats region, southwest of India. Although the landslides caused no casualties, significant damage to property and infrastructure was observed. We present, as a case study, the results of active and passive seismic prospecting at two of those landslides with the goal of characterizing them, in a first application of shallow seismic exploration to landslides in the region. Our deployments included both sites perturbed by the landslides and unperturbed slopes adjacent to them with the purpose of identifying possible structural differences between slopes that underwent landsliding from slopes that were not affected. We analyze seismic sections obtained using the multi-channel analysis of surface waves technique and compare the results with seismic noise analyzed using seismic interferometry. We show that different analyses give similar results. The lateral variations observed in the shear-wave velocity distribution below the different profiles are well correlated with dominant frequency determined from seismic noise horizontal-to-vertical spectral ratios. Our measurements were taken after the landslides occurred. In hindsight, our results suggest that soil thickness played a major role in the triggering of landslides. © 2020, Springer Nature B.V.
关键词	MASW Near surface geophysics Seismic interferometry Seismic tomography
英文关键词	image analysis; interferometry; landslide; S-wave; seismic data; seismic noise; seismic tomography; seismic velocity; India; Kerala; Western Ghats
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206145
作者单位	Instituto de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, CDMX, 04510, Mexico; Geodynamics Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, 560064, India; Facultad de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán, CDMX, 04510, Mexico; Center for Earth Science, Indian Institute of Sciences, CV Raman Rd, Bengaluru, Karnataka 560012, India
推荐引用方式 GB/T 7714	Chávez-García F.J.,Natarajan T.,Cárdenas-Soto M.,et al. Landslide characterization using active and passive seismic imaging techniques: a case study from Kerala, India[J],2021,105(2).
APA	Chávez-García F.J.,Natarajan T.,Cárdenas-Soto M.,&Rajendran K..(2021).Landslide characterization using active and passive seismic imaging techniques: a case study from Kerala, India.Natural Hazards,105(2).
MLA	Chávez-García F.J.,et al."Landslide characterization using active and passive seismic imaging techniques: a case study from Kerala, India".Natural Hazards 105.2(2021).