Re-modeling kaligarang fault base on satellite gravity data

Abstract The Kaligarang River heading North-South divides the region of Semarang. Dutch Colonial Government recorded territory Semarang on January 19, 1856, shaken by an earthquake mainland epicenter with strength V-VI MMI. Fault has a sliding rate slip (slip rate) 4.5 mm per year. value rock is relatively very small, but if accumulated over long period, its can increase and it will form when energy released. fault still active cause another earthquake. Estimates are analyzed using different analytical methods combining 3 (magnetic, gravity, geological). Preliminary studies were conducted gravity method used satellite data. purpose this study was to determine ability data be as supporting for preliminary research also complementary There similarities in results inversion modeling GgmPlus geological field. This result cannot prove kaligarang because transform fault. distribution subsurface mass existence faults area not at all, so that terrestrial needed obtain more complete structure. Others active.