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Journal : Progressive Physics Journal

Identifikasi Struktur Bawah Permukaan Daerah Potensi Panas Bumi Di Daerah Tulehu Menggunakan Metode Gravitasi Kurniawan, Indra Reza; Perdhana, Radhitya; Muliadi
Progressive Physics Journal Vol. 6 No. 2 (2025): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/w66fps36

Abstract

Indonesia has great geothermal potential, Indonesia is located in the path of volcanoes or the ring of fire can also be called the ring of fire. Maluku Province, especially the Ambon and Seram islands, has geothermal energy potential that can be developed as an alternative renewable source. One of the geothermal potentials located in the Maluku islands is WKP Tulehu which has a fairly high temperature reaching 134.09°C–251°C. One method that can be used to identify the subsurface layer of geothermal areas is the gravity method using GGMPlus gravity data. The 2013 Global Gravity Model Plus (GGMPlus) secondary gravity data is a global gravity model data that has ultra–high resolution with grid spacing between data points ~220 m in the north–south direction. The results of the identification of geological structures using gravity methods using regional anomaly values with a range of 80.7–101.3 mgal. The depth of the regional anomaly in the study area is estimated to be 1.862 km deep. There are 7 faults found in the 4 research cross sections. These faults are located in cross section A–A' at a distance of 8.30 km, cross section B–B' at a distance of 1.9 km and 5.1 km, cross section C–C' at a distance of 2.450 km and at a distance of 11.6 km, and cross section D–D' 2.248 km and 4.5 km.
Identifikasi Ketebalan Tanah Gambut Menggunakan Metode Geolistrik Resistivitas Konfigurasi Wenner Umam, Fiki Husnial; Perdhana, Radhitya; Zulfian
Progressive Physics Journal Vol. 6 No. 2 (2025): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/zrg5ej60

Abstract

Peat soils are organic deposits that have a high carbon content. West Kalimantan is the second largest province in Kalimantan with a total peat ecosystem of around 1,729,980 Ha. In 2018, it was recorded that the peat area in West Kalimantan Province was 1,543,752 Ha. Its utilization in this province has increased every year although it has not yet reached a large area. Identification of peat thickness can be done with the resistivity geoelectric method. In this study, subsurface modeling was carried out using the Wenner configuration to determine the thickness of the peat layer. The modeling results are in the area of Perdana Street, Bansir Darat Village, Southeast Pontianak. The depth of the peat layer in the research area was found at a depth of 1.30 m to reach more than 5.5 m with a range of peat layer resistivity values obtained in the range of 131 Ωm - 267 Ωm. The clay layer is found at a depth of 1.31m - 8m. with a resistivity value range of 1.80 Ωm - 131 Ωm.