Processing sentinel-1a images using sentinel application platform software to generate interferogram for measure ground deformation in Kelantan

Abstract

Land subsidence are deposition processes that lead to the earth's surface sinking slowly or suddenly as a result of movement of underground structures. It occurs when the amount of underground water has been pumped out from the certain types of sedimentary rock such as fine grains. Over-exploitation of subsurface water causes compression between clay and silt, resulting in land subsidence. Since 1935, Kelantan has relied on subsurface water as a daily requirement. There are 70% of the total domestic water supply in Kelantan is from groundwater. Consequently, the objective of this study is to monitor groundwater extraction-induced land deformation using Persistent Scatterer (PS) InSAR technique. The PSI method involves the use of large numbers of stack interferograms to determine and monitor deformation. The purpose of the study is to show how to generate interferograms from Sentinel-1A images using the SentiNel Application Platform (SNAP) software before exporting them to the Stanford Method for Persistent Scatterers (StaMPS). Furthermore, this study will focus on the state of Kelantan where the specific places involved in groundwater extractions are in Pintu Geng, Tanjung Mas and Tumpat. This paper will demonstrate how to use the SNAP software to process data.