@article{Supriyadi_Andya Satya Purnomo Putro_Khumaedi_Cherly Salawane_2020, title={3D RESISTIVITY IMAGING AND PRECIPITATION DATA TO PREDICT SEAWATER INTRUSION IN TANAH MAS INDONESIA}, volume={19}, url={https://geomatejournal.com/geomate/article/view/1060}, abstractNote={<p>The seawater intrusion into the shallow groundwater in Tanah Mas residential North <br>Semarang was predict by 3D resistivity imaging and precipitation data. The seawater intrusion was <br>investigated by resistivity survey which generated by multi-electrode system with sixteen electrodes <br>configuration. Analysis of rainfall data will show how much the influence of groundwater pressure from <br>rainfall in the study area to the saltwater interface. The result of precipitation data indicates very low medium <br>rainfall, with 0.6 mm for October 126.1 mm for November. In October, the coastal aquifer will be so pressed <br>by salt water that sea water intrusion penetrates into freshwater areas. In November, the coastal aquifers are <br>recharged by precipitation and replenished water flowing to the sea then prevent saltwater from encroaching <br>into the area of freshwater. The resistivity survey detected the presence of seawater intrusion because it has a <br>small resistivity range between 0.120-0.980 Ωm at a depth about 13.5 m to 26.9 m. 3D resistivity images<br>show the distribution of seawater intrusion in the Tanah Mas area in horizontal and vertical direction. The <br>distribution of seawater intrusion has reached northern, eastern and southern part of Tanah Mas area.</p>}, number={76}, journal={GEOMATE Journal}, author={Supriyadi and Andya Satya Purnomo Putro and Khumaedi and Cherly Salawane}, year={2020}, month={Dec.}, pages={76–81} }