Eksplorasi Akuifer Air Bawah Tanah Menggunakan Metode Tahanan Jenis 2d Di Desa Selaru Kabupaten Kotabaru, Kalimantan Selatan

Abstract

Geoelectric resistivity method is one method that can be used to characterize water-bearing rock layers (aquifers). This method is based on the existence of differences in type resistivity in the layers of rock that are flowed electrically. The use of this method is based on easy application, faster data acquisition with broad data coverage (lateral and vertical), and lower costs. Data acquisition uses two configurations or electrode arrangement, namely sclumberger and wenner-schlumberger configurations. The number of trajectories for data acquisition uses one path with a total of 28 electrodes and the spacing between the electrodes is 20 meters. The data obtained in the form of data resistivity type of each underground layer and its depth will be further analyzed using AGISSAdmin software. The results are obtained in the form of a 2-dimensional (2D) cross-sectional value of underground layers laterally and vertically. The low resistivity value will be interpreted as a layer containing ground water, which was previously corrected against the geological and hydrological data of the area. From the cross section of the type resistors, values of 20 - 317 Ωm were obtained for the wenner and wenner-schlumberger arrangements. Selaru Village consists of two rocks unit, the first rock (≤ 120 Ohm.m) in the form of Tanjung Formation rocks, with large porosity and small permeability and groundwater potential in this unit is small (0 - 40 m depth). The second rock (≥ 120 Ohm.m) is Pre Tertiary, with very little porosity and permeability, except secondary porosity in rock fractures.

Cross-Section Resistivity Detection of Tree (Swietenia Magahoni and Gmelina) Using ERT Method

“…However, this study will use the Wenner configuration. This is due to the Wenner configuration can produce a low error value (Noor, et al, 2020) and the inversion results have a lateral advantage.…”

Identifikasi Zona Akuifer Air Tanah Menggunakan Metode Geolistrik Resistivitas Konfigurasi Wenner dan Schlumberger di Megal Kabupaten Blora

“…Adanya batuan pasir meningkatkan kemungkinan adanya akuifer yang memiliki porositas tinggi .Dalam hal eksploitasi air tanah dapat secara berkelanjutan pada akuifer pasir dengan baik (Noor et al, 2020)…”

Identifikasi Lapisan Akuifer Menggunakan Metode Geolistrik Konfigurasi Schlumberger Di Perumahan Arza Griya Mandiri Jambi

“…Air tanah bawah permukaan tersimpan di dalam lapisan batuan kedap air yang disebut akuifer. dapat dilakukan menggunakan metode geofisika seperti metode magnet, metode gravitasi, metode geolistrik, dan metode seismik [3,4]. Metode geolistrik merupakan metode yang cocok digunakan dengan hasil yang akurat untuk kegiatan eksplorasi dangkal khususnya eksplorasi air tanah.…”