MONITORING OF LAND SUBSIDENCE IN THE NEW JAKARTA SUBWAY, INDONESIA

摘要

Several major cities in Indonesia have experienced land subsidence due to groundwater extraction, such as Jakarta. As the capital city of Indonesia, reasonably rapid population growth cannot be avoided. Consequently, the problem of congestion and groundwater withdrawn for daily needs has increased, which triggered land subsidence. So, by providing the first subway expected to be able to solve the congestion problem in Jakarta. However, the land subsidence threat has to consider an important matter. The deformation can be investigated by monitoring the land subsidence utilizing ALOS PALSAR-2 and using Persistent Scatterer Interferometry Synthetic Aperture Radar (PSInSAR). The result showed that the area of interest has a mostly stable condition with approximate subsidence velocity is - 1 mm/year to 2 mm/year.