APPLICATION OF SELF-POTENTIAL METHOD TO ESTIMATE SALTWATER DISTRIBUTION AROUND BRINE WELL IN MANIS RAYA VILLAGE, SINTANG REGENCY

This research aims to estimate saltwater distribution around the of Manis Raya Village, Sintang Regency. This research uses the self-potential method by a fixed base configuration. Measurements in the field applied eight tracks that have a length of 120 m each with a distance of 5 m for each track and 5 m for each porous spot. The distribution of saltwater around the brine well was obtained by interpolation using the kriging method. The measurement results show that the self-potential at the research location is -99.38 mV to 158.32 mV. The interpretation results show that the area of accumulated saltwater distribution is negative, located on the east, southeast, south and west sides of the . The low self-potential of saltwater is likely due to the accumulation of ions in the area. The saltwater distribution zone is suspected to be about 48 m to the southeast of the brine well.