Abstract
GIS-based landslide hazard zonation has been carried out for a tectonically active region of the Himalayas, which is under pressure for rapid economic development. Thematic layers of slope, fault, geology, land use, flow accumulation, drainage and roads were prepared based on topographic maps, satellite imagery, published geological maps and ground truth. Five classes of landslide hazard were identified; 24% of the total area falls into the Very high or High hazard zones where 54% of the observed landslides were recorded.
Résumé
Un zonage de l’aléa glissements de terrain, sur la base d’un système d’information géographique, a été réalisé dans une région tectoniquement active de l’Himalaya, en cours de rapide développement économique. Des couches thématiques relatives aux pentes des terrains, aux zones faillées, aux contextes géologiques, à l’occupation des sols, aux zones de convergence des écoulements, aux types de drainage naturel et aux infrastructures routières ont été préparées à partir de cartes topographiques, d’images satellitaires, de cartes géologiques et de contrôles terrain. Cinq classes d’aléa glissement de terrain ont été identifiées: 24% de la surface totale cartographiée est constitué de zones de très fort ou fort aléa où se trouvent répertoriés 54% des glissements observés.
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Acknowledgments
We are thankful to Dr. V.K. Dadhwal Dean, IIRS, Dehradun for allowing us to carry out some analysis at the institute. MS would also like to acknowledge University Grants Commission for providing her a junior research fellowship. Sincere thanks are due to Department of Geology, Panjab University for providing the facilities and help in carrying out this study.
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Sharma, M., Kumar, R. GIS-based landslide hazard zonation: a case study from the Parwanoo area, Lesser and Outer Himalaya, H.P., India. Bull Eng Geol Environ 67, 129–137 (2008). https://doi.org/10.1007/s10064-007-0113-2
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DOI: https://doi.org/10.1007/s10064-007-0113-2