Spatial techniques employed


[1] Slope

Spatial analysis ArcGIS (version 10.1) functions

Shuttle Radar Topography Mission (SRTM) 30 m Digital elevation model (DEM).

Earth Explorer

[2] Aspect

[3] Plane curvature

[4] Distance to drainage

Spatial hydrologic analyst and Euclidean distance function

[5] Relative relief

Grid based (Fishnet tool) elevation range using Zonal statistics tool

[6] LULC

Unsupervised classification techniques in ERDAS imagine (version 14)along with field checking.

Landsat 8 OLI & TIRS

(Dated on 11 January 2015)

Earth Explorer

[7] Geomorphology

Visual interpretation (Landsat 8) along with field checking

[8] Vegetation

Spectral enhancement techniques using Normalized difference vegetation index (NDVI) in ERDAS imagine (version 14) along with field checking

[9] Geology

Clipped from GIS file (i.e., shapefile of Bangladesh Geology)