DOI: 10.1007/s11069-021-04596-x
论文题名: Probabilistic seismic hazard assessment studies for Mumbai region
作者: Surve G. ; Kanaujia J. ; Sharma N.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 107, 期: 1 起始页码: 575
结束页码: 600
语种: 英语
中文关键词: Logic tree
; Peak ground acceleration
; Seismic hazard
; Seismotectonics
; Spectral periods
英文关键词: bedrock
; earthquake catalogue
; ground motion
; hazard assessment
; peak acceleration
; probability
; seismic hazard
; seismotectonics
; spectral analysis
; India
; Maharashtra
; Mumbai
英文摘要: The present study attempts to understand and assess the seismic hazard of Mumbai using probabilistic seismic hazard analysis (PSHA) with an updated catalogue of earthquake clubbed with recent knowledge on seismotectonics of the region. An updated catalogue of instrumental and pre-instrumental earthquake data within 300 km radius around the city has been compiled from different sources. The PSHA has been computed using two different seismic source models, viz., a fault (linear) and zone model (areal). A hybrid of five suitable ground motion prediction models (GMPM) consisting of widely accepted and latest GMPMs is used to compute the PSHA of Mumbai. The results obtained from different methodologies are integrated with logic tree approach to minimize the epistemic uncertainties in hazard calculation. Probabilistic seismic hazard maps in terms of peak ground accelerations (PGA) at bedrock levels for 2% and 10% probability of exceedance in 50 years are developed for Mumbai. Uniform hazard response spectrum (UHRS) on bedrock at eight different sites within Mumbai for spectral periods of 0.01—2 s is also computed. The low seismic hazard is observed and reasonably compared with the previous PSHA studies done for Mumbai region. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169392
Appears in Collections: 气候变化与战略
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作者单位: Indian Institute of Geomagnetism (IIG), Plot No. 5, Sector-18, Near Kalamboli Highway, New Panvel, Navi Mumbai, Maharashtra 410 218, India; CSIR-National Geophysical Research Institute (NGRI), Hyderabad, 500007, India
Recommended Citation:
Surve G.,Kanaujia J.,Sharma N.. Probabilistic seismic hazard assessment studies for Mumbai region[J]. Natural Hazards,2021-01-01,107(1)