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A platform for research: civil engineering, architecture and urbanism
Integrating Landslide and Seismic Hazards: A Case Study for Lower Indian Himalaya
https://orcid.org/http://orcid.org/0000-0002-0925-5646
The Himalaya is considered as a global hotspot for landslides and earthquakes. The impacts of seismically induced landslides are astounding in terms of loss of life and property. An endeavour has been made in this present study to prepare a seismically induced landslide hazard zonation map for a part of lower Indian Himalaya. Eight landslide causative factors are identified for the study area, out of which seven are static in nature and preparatory in contribution. Earthquake is considered as the eighth causative parameter, which is recognized as the triggering factor of landslides in the study area. Peak ground acceleration at bedrock level, generated through probabilistic seismic hazard assessment for 10% exceedance probability in 50 years, is considered as a scenario earthquake in the study area. Analytic hierarchy process is used to allocate the weights to different landslides causative factors judiciously. The results of the study show that the probability of landslides increases by 35%, when earthquake scenario is integrated into the landslide hazard zonation map prepared under the preparatory causative factors. The study demonstrates that for seismically active mountain zones, incorporation of seismic factor becomes the most crucial parameter in assessing the prevailing landslide hazard.
Integrating Landslide and Seismic Hazards: A Case Study for Lower Indian Himalaya
https://orcid.org/http://orcid.org/0000-0002-0925-5646
The Himalaya is considered as a global hotspot for landslides and earthquakes. The impacts of seismically induced landslides are astounding in terms of loss of life and property. An endeavour has been made in this present study to prepare a seismically induced landslide hazard zonation map for a part of lower Indian Himalaya. Eight landslide causative factors are identified for the study area, out of which seven are static in nature and preparatory in contribution. Earthquake is considered as the eighth causative parameter, which is recognized as the triggering factor of landslides in the study area. Peak ground acceleration at bedrock level, generated through probabilistic seismic hazard assessment for 10% exceedance probability in 50 years, is considered as a scenario earthquake in the study area. Analytic hierarchy process is used to allocate the weights to different landslides causative factors judiciously. The results of the study show that the probability of landslides increases by 35%, when earthquake scenario is integrated into the landslide hazard zonation map prepared under the preparatory causative factors. The study demonstrates that for seismically active mountain zones, incorporation of seismic factor becomes the most crucial parameter in assessing the prevailing landslide hazard.
Integrating Landslide and Seismic Hazards: A Case Study for Lower Indian Himalaya
https://orcid.org/http://orcid.org/0000-0002-0925-5646
The Himalaya is considered as a global hotspot for landslides and earthquakes. The impacts of seismically induced landslides are astounding in terms of loss of life and property. An endeavour has been made in this present study to prepare a seismically induced landslide hazard zonation map for a part of lower Indian Himalaya. Eight landslide causative factors are identified for the study area, out of which seven are static in nature and preparatory in contribution. Earthquake is considered as the eighth causative parameter, which is recognized as the triggering factor of landslides in the study area. Peak ground acceleration at bedrock level, generated through probabilistic seismic hazard assessment for 10% exceedance probability in 50 years, is considered as a scenario earthquake in the study area. Analytic hierarchy process is used to allocate the weights to different landslides causative factors judiciously. The results of the study show that the probability of landslides increases by 35%, when earthquake scenario is integrated into the landslide hazard zonation map prepared under the preparatory causative factors. The study demonstrates that for seismically active mountain zones, incorporation of seismic factor becomes the most crucial parameter in assessing the prevailing landslide hazard.
Integrating Landslide and Seismic Hazards: A Case Study for Lower Indian Himalaya
Lecture Notes in Civil Engineering
Sitharam, T. G. (editor) / Kolathayar, Sreevalsa (editor) / Jakka, Ravi (editor) / Nath, Ritu Raj (author)
2022-01-04
15 pages
Article/Chapter (Book)
Electronic Resource
English
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