Estimation of karts groundwater based on geophysical methods in the Monggol village, Saptosari district, Gunungkidul Regency

Abstract

Clean water problems always arise in Gunungkidul Regency, which is mostly karst areas. One area that is often affected by water shortages is Saptosari sub-district. This water shortage is mainly due to groundwater aquifers in Gunungkidul included in the karst aquifer system. The application of the dipole-dipole geoelectric method is used to obtain information on the presence of ground water in the village of Monggol. Dipole-dipole configuration with 40 meters in spacing and n = 1 to 8, able to map subsurface that is quite deep. The inversion results in two measuring paths showed a very high resistivity value (> 2500 Ohm-m), which was interpreted as a large cavity connected to each other at a depth of 60 meters.