Landslide Dynamics and Probing their Interplay with Geophysical Factors Using GIS and Remote Sensing
DOI:
https://doi.org/10.31305/rrjss.2024.v04.n01.012Keywords:
Geophysical, Landslides, PlanetScope, Himachal PradeshAbstract
The global database on natural and technological disasters occurring between 1990 and 2015, landslides accountfor 4.3 per cent of total disaster events out of which 54 per cent occurred in Asia. Asia, with 75 percent of the total landslide events between 2004 and 2016 is one of the major hot spots. According to NDMA, In India, 15 per cent of land territory is affected by landslides. The tectonically active Himalayan region exhibits the highest frequency of landslides. In this context, a landslide inventory provides precise information on the actual location of events and provides a basis to examine the influence of underlying factors on landslide to relate surface and subsurface properties of the terrain that determine slope material's strength and stability/instability of hillslopes to various failure mechanisms. To evaluate terrain characteristics the data sets derived from DEM, PlanetScope satellite images, topographical maps, soil map and daily rainfall data from IMD for the period (2000-2019). These parameters were analysed in the GIS environment to prepare output maps depicting their profound relevance in studying landslides. About 30 per cent of landslides are in the vicinity of agricultural and built-up areas and 18 per cent occurred in open/barren land.
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