Study of land subsidence by INSAR time series of ALOS-2, Sentinel-1 and GNSS CORS stations in Chaopraya basin, samutprakan, Thailand

Abstract

Samutprakan province is the most important industrial province and one of the main ports of Thailand, located in the north coast of Thailand near Bangkok. This area is receiving the impact of climate change from sea level rise and land subsidence, caused by many factors such as use of ground water from many industries in this province and surrounded area, the movement of earth surface and the numerous constructions in this area. This study will identify the movement ratio of land subsidence rate in last six years by using Interferometric Synthetic Aperture Radar (InSAR) time series technique from ALOS-2 satellite, Sentinel-1 and Precise Point Positioning (PPP) from GNSS CORS stations to identify the rate of land subsidence and compare the land subsidence with three difference methods above in last 6 years of Samutprakan province Thailand.