DOI: 10.1007/s11069-020-04369-y
论文题名: Landslide characterization using active and passive seismic imaging techniques: a case study from Kerala, India
作者: Chávez-García F.J. ; Natarajan T. ; Cárdenas-Soto M. ; Rajendran K.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 2 起始页码: 1623
结束页码: 1642
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168944
Appears in Collections: 气候变化与战略
There are no files associated with this item.
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
Recommended Citation:
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]. Natural Hazards,2021-01-01,105(2)