Small island morphometry analysis with remote sensing and GIS methods on the Satonda volcanic island

Abstract

DEMNAS and Sentinel-1 are profoundly utilized for the small island morphometry analysis. This study explores the Satonda Island-West Nusa Tenggara landforms through the morphometry analysis using the DEM application and GIS analysis. As a volcanic island the Satonda Island coverage area is approximately about 2.600hectare dominated by the slopes with the steep slope (16o – 35o) at the northwest in a moderately steep (8° – 16°) at the southeast. Here, we uncover that the Satonda Island experiences five landforms carved by volcanic processes and other five are generated by the marine processes. As a typical of volcanic island, this island has a cone shape with the caldera founded in the middle with the radial flow pattern.