GIS based macrolevel landslide hazard zonation using, Newmark's methodology

Sitharam, TG and James, N (2018) GIS based macrolevel landslide hazard zonation using, Newmark's methodology. [Book Chapter]

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Abstract

This study presents a quantitative seismic landslide hazard assessment at macrolevel, for the states of Karnataka and Sikkim. Newmark's sliding block model is used in the present study to analyze the dynamic behavior of slopes under earthquake loading. The landslide hazard at a given location was expressed in terms of static factor of safety required to resist landslide for the given slope angle and surface-level peak horizontal acceleration (PHA). ASTER global digital elevation model was used in the present study to develop slope maps of Karnataka and Sikkim. The spatial variation of PHA throughout the study area was evaluated using the deterministic seismic hazard analysis incorporating region-specific attenuation relations. Furthermore, this study also presents the integrated landslide hazard assessment for the state of Sikkim using the analytical hierarchical approach, representing the combined effect of all landslide hazard parameters such as rainfall, intensity of earthquake shaking, terrain slope, and amplification factor. The integrated landslide hazard map presents the spatial variation of landslide hazard index throughout the state of Sikkim. © 2018 Elsevier Inc. All rights reserved.

Item Type:	Book Chapter
Publication:	Integrating Disaster Science and Management: Global Case Studies in Mitigation and Recovery
Publisher:	Elsevier Inc.
Additional Information:	The copyright for this article belongs to the Elsevier Inc.
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	14 Aug 2022 05:02
Last Modified:	14 Aug 2022 05:02
URI:	https://eprints.iisc.ac.in/id/eprint/75554

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