A GIS-based assessment of active tectonics from morphometric parameters and geomorphic indices of Assam Region, India

Assam region is mainly formed by the deposit and erosion process of Brahmaputra River. The frequency seismic events results in landform deformation, which highly influences drainage basin pattern causes anomalies, having a subsequent effect on flood distribution pattern. In present study, morphometric parameters geomorphic indices for are derived from SRTM DEM data 30 m resolution using GIS to characterize tectonic activity, turn classified into three activity classes, average classes combined generate relative active tectonics (IRAT). four IRAT defined study area as (i) very high; Class 1 (1.57–1.80), (ii) 2 (1.81–2.06), (iii) moderate; 3 (2.07–2.26), (iv) low; 4 (2.27–2.30). corresponds basins 6. Basins 2, 4, 5 fall under 2. consists 7, 8, 9, comprises 10. Results show that most lies high moderate zones identified consistent with significant faults thrusts basins. approach GIS-based allows identifying deformed landforms resulting tectonics. can also be employed development watershed management sustainable land use planning.