Increasing population and industries at Jakarta have impacted on the excessive extracting groundwater and energy. To handle these situations, it is important to conduct the latest methods for solving Jakarta environmental and energy problems. In this research, we have improved geophysical method by analysis the time-lapse microgravity methods to identify subsidence and groundwater level lowering at Jakarta and its surrounding areas. Twice microgravity measurements had been conducted at Jakarta with one year period between two measurements at 2009 and 2010. In order to investigate subsidence and groundwater lowering of the area, elevation measurements by GPS were also used to support advance analysis. Subsidence value of microgravity anomaly data has similarity with subsidence by GPS measurements. The maximum value of subsidence is located at the Northern part of Jakarta. The maximum value about 13 cm was occurred at North Jakarta at the boundary of North Jakarta and East Jakarta. High value of subsidence also occurred at North Jakarta have similarity at the location but the result of microgravity analysis has smaller value than a result of GPS measurement. Based on the result on linear inversion of deep microgravity anomaly, almost all part of Jakarta has a positive density changes. The negative value changes of density only occurred at a few part of Jakarta at Northeastern part of North Jakarta and East Jakarta.
Keywords: time-lapse microgravity, subsidence, groundwater