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Regional Liquefaction Susceptibility Mapping in the Himalayas using Geospatial Data and AHP Technique


Affiliations
1 Geosciences Group, National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, India
2 Department of Geophysics, College of Science and Technology, Andhra University, Visakhapatnam 530 003, India
 

Liquefaction susceptibility (LS) assessment is a necessary input for seismic zonation studies. LS can be done using geospatial models by integration of thematic layers. In this study, we have used analytical hierarchy process for integration of thematic layers (e.g. water table depth, peak horizontal acceleration, etc.) to generate a regional LS map for Uttarakhand and Himachal Pradesh in India. The final map was classified as liquefaction-likely, liquefaction-possible and liquefaction-not-likely zones. Results show Doon valley and Himalayan foothills are more prone to LS than the higher Himalayas.

Keywords

Analytical Hierarchy Process, Earthquakes, Geospatial Data, Liquefaction Susceptibility.
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  • Regional Liquefaction Susceptibility Mapping in the Himalayas using Geospatial Data and AHP Technique

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Authors

Ramesh Pudi
Geosciences Group, National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, India
Tapas R. Martha
Geosciences Group, National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, India
Priyom Roy
Geosciences Group, National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, India
K. Vinod Kumar
Geosciences Group, National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 037, India
P. Rama Rao
Department of Geophysics, College of Science and Technology, Andhra University, Visakhapatnam 530 003, India

Abstract


Liquefaction susceptibility (LS) assessment is a necessary input for seismic zonation studies. LS can be done using geospatial models by integration of thematic layers. In this study, we have used analytical hierarchy process for integration of thematic layers (e.g. water table depth, peak horizontal acceleration, etc.) to generate a regional LS map for Uttarakhand and Himachal Pradesh in India. The final map was classified as liquefaction-likely, liquefaction-possible and liquefaction-not-likely zones. Results show Doon valley and Himalayan foothills are more prone to LS than the higher Himalayas.

Keywords


Analytical Hierarchy Process, Earthquakes, Geospatial Data, Liquefaction Susceptibility.

References





DOI: https://doi.org/10.18520/cs%2Fv116%2Fi11%2F1868-1877