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All Journal Buletin Sumber Daya Geologi Jurnal Fisika
Nanang Sugianto
Program Studi Geofisika, Jurusan Fisika, Universitas Bengkulu
Education Energy Engineering Environmental Science Physics

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DELINEASI NILAI RESISTIVITAS DI LAPANGAN PANAS BUMI TAMBANG SAWAH MENGGUNAKAN METODE MAGNETOTELLURIK Andre Rahmat Al Ansory; Hana Raihana; Vinki Loverly Pritama; Welly Saputri; Faritz Bagda Maghribi; Muchammad Farid; Arif Ismul Hadi; Halauddin; Budi Harlianto; Nanang Sugianto
Buletin Sumber Daya Geologi Vol. 18 No. 3 (2023): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v18i3.386

Abstract

The subsurface structure of the geothermal field in Desa Tambang Sawah has been mapped. This research aims to delineate the resistivity values in the area of Tambang Sawah Village, Lebong Regency, Bengkulu Province based on magnetotelluric measurements which can later identify low, medium, and high resistivity values to interpret geothermal in the research area. The magnetotelluric (MT) method with electrical and magnetic sensors is used to collect data in the field. There are two electrical sensors in horizontal direction (Ex, Ey) and three magnetic sensors in horizontal direction. (Hx, Hy) and vertical (Hz). The results obtained from this study are that resistivity values of 20-50 ohm.m are considered as reservoirs, while resistivity of 0.26-0.8 ohm.m is considered as caprock, and resistivity greater than 300 ohm.m is considered as hot rock.
Morphometric Analysis and Stress Orientation of Kaba, Daun, and HulupalikVolcanoes, Bengkulu Province, Indonesia Dadin Mars Abimayu Abimayu; Arif Ismul Hadi Hadi; Refrizon; Nanang Sugianto; Sapari Dwiyono; Andre Rahmat Al Ansory; Hana Raihana Raihana; Arieffin Yusuf Hakim Hakim; Asy Syifa Auliya Putri Ramadhani
Jurnal Fisika Vol. 14 No. 2 (2024): Jurnal Fisika 14 (2) 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v14i2.15222

Abstract

Bengkulu Province is an area in Sumatra that is surrounded by Bukit Barisan. This research aims to provide information about the horizontal stress orientation data σHmaxs on the volcanoes of Kaba, Bukit Daun, and Hulupalik, as well as added information about the slope data in the research location that underlies the volcanic arc on the Sumatra Fault. We conducted this research by mapping the morphology of the mountain and determining the straight line of stress orientation, this research uses DEMNAS data of Geospatial Information Agency (BIG). At Kaba Mountain, the maximum stress azimuth angle (σHmaxs) is orientated towards 62° to the East-Northeast/ENE. The direction of plate movement that gives horizontal stress on Kaba volcano is from the east-northeast / ENE and west-southwest / WSW. On Mount Hulupalik determining the azimuth angle of the orientation of the Horizontal stress σHmaxs, the azimuth is towards NNE29°. On Mount Daun where the azimuth angle itself is NNE26°. From the azimuth direction of the horizontal stress (σHmaxs) of Mount Daun and Hulupalik, the plate stress moves from South Southwest/SSW and North Northeast/NNE. Regardless of the direction of horizontal stress/σHmaxs of each mountain, it is influenced by several factors that can cause different stress directions.
Co-Authors Andre Rahmat Al Ansory Andre Rahmat Al Ansory Andre Rahmat Al Ansory Arieffin Yusuf Hakim Hakim Arif Ismul Hadi Arif Ismul Hadi Arif Ismul Hadi Hadi Asy Syifa Auliya Putri Ramadhani Dadin Mars Abimayu Abimayu Desi wulandari Eko Heru Purwanto Faritz Bagda Maghribi Halauddin Halauddin Halauddin Hana Raihana Hana Raihana Raihana Harlianto, Budi Muchammad Farid Muchammad Farid Refrizon Refrizon Refrizon Ripal Zamrawi Sapari Dwiyono Shela Basaria Purba Suhendra Suhendra Usman Gumanty Vinki Loverly Pritama Welly Saputri