Preliminary estimation of subsurface structure of Surakarta city by using geophysical methods

Surakarta city has been grown in the last decade, many hotels and industries build in this city. The supporting city for this condition needs more attentions including the geological factors. We collect the subsurface of Surakarta by using three geophysical methods, i.e. Gravity, Microtremor, and Geoelectricity methods. There are 44 sites of gravity survey, 8 sites of microtremor, and 10 sites of geoelectricity survey, respectively. We found that the results of all the methods are related well. This research will have a recommendation to the local government of Surakarta city which related to environmental and disaster prevention issues.