Identification of potential landslide hazard zonation mapping using geoinformatics for Kohima region, Nagaland, India

Bilwa, L. M. and Yanthan, M. A. and Madesh, P. and Basavaraj, H. (2015) Identification of potential landslide hazard zonation mapping using geoinformatics for Kohima region, Nagaland, India. International Journal of Innovative Science Engineering and Technology, 2 (11). ISSN 2348 – 7968

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Abstract

Climate change is increasing the frequency of natural hazards such as intense landslide, flood and storms. Predictably, vulnerability assessment focuses on individual risks, but the importance of addressing hazards collectively is now unavoidable using geoinformatics. A huge area of Nagaland is prone to landslides. The main causes of slope instability in the region are attributed to young geology, high slope and relief, heavy rainfall and improper land use practice. In the present study, identification of potential landslide hazard zonation study of Kohima region has been attempted using Google earth�s high resolution satellite data. The lithology, geological structures, slope aspect ratio, relative relief and land use and land cover layers of Kohima region were prepared using geoinformatics techniques; which includes geographical information system (GIS), remote sensing (RS) and global positioning system (GPS). These were classified, ranked and weighted according to their assumed or expected importance in causing slope instability based on a priori information of the expert. A heuristic method has been applied for the assignment of ranks and weights. Landslide hazard zonation map is generated showing five hazard classes ranging from very low hazard, low hazard, moderate hazard, high hazard and very high hazard

Item Type: Article
Uncontrolled Keywords: Landslide and Geoinformatics and Region and Hazard and Slope
Subjects: F Earth Science > Geology
Divisions: Department of > Earth Science
Depositing User: Shrirekha N
Date Deposited: 24 Jun 2019 07:06
Last Modified: 24 Jun 2019 07:06
URI: http://eprints.uni-mysore.ac.in/id/eprint/3640

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