Nugroho, Lantip Adi (2019) Identifikasi Akuifer Air Tanah Pada Lapangan “X” Dengan Metode Geolistrik Konfigurasi Schlumberger. Sarjana thesis, Universitas Brawijaya.
Abstract
Survey geolistrik telah dilaksanakan untuk mengidentifikasi batuan bawah permukaan sebagai potensi akuifer di Desa Peliatan, Kecamatan Ubud, Kabupaten Gianyar, Bali. Metode yang digunakan adalah metode geolistrik Resistivitas konfigurasi Schlumberger. Metode tersebut mengukur parameter tahanan jenis batuan dengan injeksi arus di bawah permukaan. Akuisisi data dilakukan sejumlah 5 titik pengukuran, dengan jarak MN sebesar 5 meter dan Panjang lintasan (AB) dari 55 hingga 105 meter. Pengolahan dilakukan dengan inversi dalam software dan hasil akhir yang diperoleh berupa log resisitivitas. Interpretasi dari hasil log resistivitas menunjukkan sebaran nilai resistivitas di bawah permukaan antara lain batuan tuff (lapisan atas) berkisar 16,71 Ωm - 42,64 Ωm, batuan lempung berkisar 4,99 Ωm - 14,23 Ωm, batuan tuff (lapisan bawah) berkisar 18,80 Ωm – 60,85 Ωm, dan batuan dasar (breksi/ lava) berkisar 103,19 Ωm – 200,11 Ωm. Potensi akuifer tidak ditemukan, akan tetapi ditemukannya potensi sebaran air tanah permukaan pada lapisan tanah dengan rentang kedalaman rata-rata berkisar 4 hingga 8 meter di bawah permukaan.
English Abstract
The geoelectric surveys have been done to identify the subsurface rocks as potential of aquifer in Peliatan Village, Ubud District, Gianyar Regency, Bali. The method used was the geoelectric resistivity by using Schlumberger configuration. Geoelectric resistivity method measures the type of resistance parameters by injection of subsurface currents. Data acquisition was carried out in 5 measurement points, with MN distance of 5 meters and line length (AB) from 55 to 105 meters. Data processing was done by inversion in software and the final result was in the form of resistivity log. The interpretation of the resistivity log resulted that the tuff rocks (top layer) has resisitivity value of 16.71 to 42.64 Ωm, clay rocks has 4.99 to 14.23 Ωm, tuff rocks (bottom layer) has 18.80 to 60.85 Ωm, and bedrock (breccia / lava) has 103.19 to 200.11 Ωm. The potential of aquifers was not found, but the potential distribution of surface groundwater was found in soil layers with an average depth range ranging from 4 to 8 meters below the surface.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/303/051910974 |
| Uncontrolled Keywords: | Geolistrik resistivitas, konfigurasi Schlumberger, akuifer log resistivitas, Geoelectric resistivity, Schlumberger configuration, aquifer, resistivity log |
| Subjects: | 500 Natural sciences and mathematics > 551 Geology, hydrology, meteorology > 551.4 Geomorphology and hydrosphere > 551.49 Groundwater (Subsurface water) |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 20 Jul 2020 23:54 |
| Last Modified: | 31 Jul 2020 07:09 |
| URI: | http://repository.ub.ac.id/id/eprint/179407 |
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