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.
Highlights
Desa Selaru berada pada Kecamatan Pulau Laut Tengah di Kabupaten Kotabaru, Kalimantan Selatan adalah salah satu daerah yang ketersediaan air sulit terutama pada musim kemarau
This method is based on the existence of differences
The use of this method is based on easy application
Summary
Lokasi penelitian dilakukan di Desa Selaru Kecamatan Pulau Laut Tengah, Kabupaten Kotabaru, Provinsi Kalimantan Selatan. Eksplorasi Akuifer Air Bawah Tanah Menggunakan Metode Tahanan Jenis 2D di Desa Selaru Kabupaten Kotabaru, Kalimantan Selatan (Rudy Hendrawan Noor, Ishaq, Jarwanto , dan Dwi Priono). Akuisisi Data dan Metode Jenis penelitian berupa penyelidikan lapangan secara langsung dengan menggunakan metode Geolistrik. Data yang diperoleh berupa data tahanan jenis masing-masing lapisan bawah tanah dan kedalamannya yang akan dianalisis lebih lanjut dengan menggunakan software AGISSAdmin. Hasil pengolahan data berupa tampilan 2 dimensi (2D) lapisan-lapisan permukaan bawah bumi secara lateral dan vertikal yang menunjukkan nilai-nilai tahanan jenis dan kedalamannya. Setiap elektroda yang ditancapkan di permukaan akan diukur masing-masing koordinatnya dengan menggunakan GPS (Globale Position System), selain tujuannya mempermudah diplot pada peta juga untuk melihat elevasi permukaan sehingga dapat mengoreksi kedalaman akuifer dari permukaan.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
