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All Journal Journal of Engineering and Scientific Research (JESR) Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
I Gede Boy Darmawan
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Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Industrial & Manufacturing Engineering

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A Geoelectrical Study of Aquifers in the Natar Region, South Lampung Rahmi Mulyasari; I Gede Boy Darmawan; Hesti Hesti; Akroma Hidayatika; Suharno Suharno
Journal of Engineering and Scientific Research Vol. 4 No. 2 (2022)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jesr.v4i2.119

Abstract

The conditions for the development of population growth and development in the area around the City of Bandar Lampung are very fast and starting to get crowded, as happened in the District of Natar South Lampung, especially in the Village of Pemanggilan. This condition causes an increase in the need for clean water resources in line with the increase in groundwater exploitation. Therefore it is necessary to map the potential of groundwater through aquifer mapping and aquifer rock layers through geoelectrical measurements. This study aims to determine the potential of groundwater from volcanic aquifer systems based on geoelectrical measurements. The method used in this study is geoelectric resistivity using the Wenner-Schlumberger configuration with 3 measurement points. The results of the study show that using the geoelectrical resistivity method, layers with a resistivity value of ? 30.3 ?m are interpreted as shallow aquifers at depths varying from 1 to more than 24 meters with lithology suspected to be tuff and tuff sandstones, which according to geological data are included in the Lampung Formation. Using the 2D geoelectric method, the distribution of shallow aquifers in the study area to a depth of 24 meters can also be determined. The data obtained is expected to be used as supporting data for the sustainable use of water sources.
Pemetaan Sebaran Spasial Potensi Panas Bumi Daerah Suoh Menggunakan Metode Analytical Hierarchy Process (AHP) Astri Niken Saputri; I Gede Boy Darmawan; Karyanto; Nandi Haerudin; Ordas Dewanto
Jurnal Geologi dan Sumberdaya Mineral Vol. 26 No. 2 (2025): JURNAL GEOLOGI DAN SUMBERDAYA MINERAL
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33332/jgsm.geologi.v26i2.940

Abstract

Panas bumi adalah salah satu bentuk energi terbarukan dengan besar potensi sebesar 28.5 GW di Indonesia. Suoh diduga sebagai salah satu daerah dengan potensi panas bumi di Indonesia yang dicirikan dengan kemunculan manifestasi panas bumi berupa fumarola dan mata air panas. Penelitian ini bertujuan untuk mengklasifikasi parameter input penelitian dan menganalisis daerah berpotensi panas bumi tinggi. Metode Analytical Hierarchy Process (AHP) menjadi salah satu metode yang telah digunakan penelitian terdahulu dalam menganalisis potensi panas bumi suatu daerah. Pada penelitian ini digunakan parameter geosains berupa geologi, manifestasi, alterasi hidrotermal, suhu permukaan, kerapatan kelurusan, dan anomali gaya berat. Bobot tiap parameter ditentukan dari metode AHP dan hasilnya dilakukan pembobotan overlay. Peta potensi panas bumi daerah Suoh diklasifikasikan menjadi 4 kelas, yaitu potensi panas bumi rendah, sedang, tinggi, dan sangat tinggi. Daerah dengan potensi panas bumi tinggi tersebut berada pada daerah didekat manifestasi dengan jenis batuan vulkanik, memiliki densitas kelurusan yang cenderung tinggi, merupakan daerah dengan alterasi, suhu permukaannya tinggi, anomali residual cenderung sedang hingga sangat tinggi. Daerah berpotensi panas bumi tinggi berkorelasi dengan 8 titik manifestasi panas bumi di daerah penelitian. Kata Kunci:  panas bumi, potensi, analytical hierarchy process (AHP), analisis spasial Abstract- Geothermal heat is one of the forms of renewable energy with a substantial potential of 28.5 GW in Indonesia. Suoh is suspected to be one of the areas with geothermal potential in Indonesia, characterized by the occurrence of geothermal manifestations in the form of fumaroles and hot springs. This study aims to classify the research input parameters and analyze areas with high geothermal potential. The Analytical Hierarchy Process (AHP) method is one of the techniques previously used in analyzing the geothermal potential of an area. In this study, geological parameters such as geology, manifestations, hydrothermal alteration, surface temperature, lineament density, and gravity anomalies were used. The weight of each parameter was determined using the AHP method, and the results were subjected to overlay weighting. The geothermal potential map of the Suoh area was classified into 4 classes: low, moderate, high, and very high geothermal potential. Regions with high geothermal potential are located near manifestations, characterized by volcanic rock types, a tendency for high lineament density, areas with alteration, high surface temperatures, and moderate to very high residual anomalies. High geothermal potential areas correlate with 8 geothermal manifestation points in the research area. Keywords: geothermal, potential, Analytical Hierarchy Process (AHP), spatial analysis
Co-Authors Akroma Hidayatika Astri Niken Saputri Hesti Hesti Karyanto Nandi Haerudin Ordas Dewanto Rahmi Mulyasari Suharno Suharno