Assessment of Geothermal Potential in Kepahiang District Using the Magnetotelluric Method for Renewable Energy Development.
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| Title: | Assessment of Geothermal Potential in Kepahiang District Using the Magnetotelluric Method for Renewable Energy Development. |
|---|---|
| Alternate Title: | Procjena geotermalnoga potencijala u okrugu Kepahiang magnetotelurskom metodom za razvoj korištenja obnovljivih izvora energije. |
| Authors: | Farid, Muchammad1 mfarid@unib.ac.id, Suhartoyo, Hery2, Hadi, Arif Ismul1, Refrizon1, Al-Ansory, Andre Rahmat1, Raihana, Hana1 |
| Source: | Rudarsko-Geološko-Naftni Zbornik. 2025, Vol. 40 Issue 4, p15-29. 15p. |
| Subject Terms: | *Geothermal resources, *Magnetotelluric prospecting, *Geological surveys, *Renewable energy sources, *Sustainable development, *Electrical resistivity, *Geothermal engineering |
| Geographic Terms: | Indonesia |
| Abstract (English): | Indonesia, located on the Pacific Ring of Fire, has 147 volcanoes, with 76 still active, creating optimal conditions for geothermal energy development. Kepahiang Regency in Bengkulu Province is particularly promising for geothermal exploration, evidenced by hot springs, fumaroles, and other geothermal phenomena. This study aims to enhance subsurface analysis through a detailed Magnetotelluric (MT) survey, utilizing 17 strategically placed stations near geothermal manifestations and fault zones. The MT method is highly effective for deep geothermal resource exploration, as it measures natural geomagnetic field variations to assess subsurface electrical resistivity. Data were collected over 16 hours at different frequencies (128 Hz, 1024 Hz, 4096 Hz) and analyzed using MAPROS, ZONDMT1D, and ZONDMT2D software, producing detailed subsurface resistivity models. The results identified low-resistivity zones at various depths, indicating potential geothermal reservoirs with hot fluids and thermally altered stones. Notably, the measurements revealed a heat source in the upper layer with a resistivity of over 350 ohm-m, and at point 3L1, the presence of a cap rock beneath the manifestation at a depth of 1-2 km with a resistivity of 0.7-1.6 ohm-m. Below this cap rock, a hot rock layer with a resistivity exceeding 350 ohm-m was detected. These findings highlight promising targets for further exploration, including directional drilling to confirm the presence and feasibility of geothermal resources. Developing geothermal energy in Kepahiang could offer a sustainable energy source, reduce fossil fuel dependence, and support regional economic growth by creating jobs and lowering greenhouse gas emissions. [ABSTRACT FROM AUTHOR] |
| Abstract (Croatian): | Indonezija, smještena na Pacifičkome vatrenom prstenu, ima 147 vulkana, od kojih je 76 još uvijek aktivno, što stvara optimalne uvjete za razvoj korištenja geotermalne energije. Okrug Kepahiang u pokrajini Bengkulu posebno je prikladan za istraživanja geotermalnoga potencijala, o čemu svjedoče vrući izvori, fumarole i drugi geotermalni fenomeni. Cilj je ovoga istraživanja poboljšati analizu podzemlja putem detaljnoga magnetotelurskog (MT) istraživanja 17 strateški postavljenih postaja u blizini manifestacija geotermalnih pojava i rasjednih zona. MT metoda vrlo je učinkovita za istraživanje dubokih geotermalnih resursa s obzirom na to da mjeri prirodne varijacije geomagnetskoga polja za procjenu podzemnoga električnog otpora. Podatci su prikupljani tijekom 16 sati na različitim frekvencijama (128 Hz, 1024 Hz, 4096 Hz), a analizirani su korištenjem softvera MAPROS, ZONDMT1D i ZONDMT2D stvarajući detaljne modele otpornosti. Rezultati provedenih analiza otkrili su zone niskoga otpora na različitim dubinama upućujući na potencijalna geotermalna ležišta i termičke anomalije u stijenama. Naime, mjerenja su otkrila izvor topline u gornjemu sloju s otporom od preko 350 Ohm-m, a u točki 3L1 prisutnost krovine ispod manifestacije na dubini od 1 do 2 km s otporom od 0,7 do 1,6 Ohm-m. Ispod navedene krovine detektiran je sloj vruće stijene s otporom većim od 350 Ohm-m. Ovi rezultati poticajni su za daljnja istraživanja uključujući usmjereno bušenje kako bi se potvrdila prisutnost i iskoristivost geotermalnih izvora. Razvoj korištenja geotermalne energije u Kepahiangu mogao bi ponuditi održivi izvor energije, smanjiti ovisnost o fosilnim gorivima i podržati regionalni gospodarski rast stvaranjem radnih mjesta i smanjenjem emisije stakleničkih plinova. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 187883480 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Assessment of Geothermal Potential in Kepahiang District Using the Magnetotelluric Method for Renewable Energy Development. – Name: TitleAlt Label: Alternate Title Group: TiAlt Data: Procjena geotermalnoga potencijala u okrugu Kepahiang magnetotelurskom metodom za razvoj korištenja obnovljivih izvora energije. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Farid%2C+Muchammad%22">Farid, Muchammad</searchLink><relatesTo>1</relatesTo><i> mfarid@unib.ac.id</i><br /><searchLink fieldCode="AR" term="%22Suhartoyo%2C+Hery%22">Suhartoyo, Hery</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Hadi%2C+Arif+Ismul%22">Hadi, Arif Ismul</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Refrizon%22">Refrizon</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Al-Ansory%2C+Andre+Rahmat%22">Al-Ansory, Andre Rahmat</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Raihana%2C+Hana%22">Raihana, Hana</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Rudarsko-Geološko-Naftni+Zbornik%22">Rudarsko-Geološko-Naftni Zbornik</searchLink>. 2025, Vol. 40 Issue 4, p15-29. 15p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Geothermal+resources%22">Geothermal resources</searchLink><br />*<searchLink fieldCode="DE" term="%22Magnetotelluric+prospecting%22">Magnetotelluric prospecting</searchLink><br />*<searchLink fieldCode="DE" term="%22Geological+surveys%22">Geological surveys</searchLink><br />*<searchLink fieldCode="DE" term="%22Renewable+energy+sources%22">Renewable energy sources</searchLink><br />*<searchLink fieldCode="DE" term="%22Sustainable+development%22">Sustainable development</searchLink><br />*<searchLink fieldCode="DE" term="%22Electrical+resistivity%22">Electrical resistivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Geothermal+engineering%22">Geothermal engineering</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Indonesia%22">Indonesia</searchLink> – Name: Abstract Label: Abstract (English) Group: Ab Data: Indonesia, located on the Pacific Ring of Fire, has 147 volcanoes, with 76 still active, creating optimal conditions for geothermal energy development. Kepahiang Regency in Bengkulu Province is particularly promising for geothermal exploration, evidenced by hot springs, fumaroles, and other geothermal phenomena. This study aims to enhance subsurface analysis through a detailed Magnetotelluric (MT) survey, utilizing 17 strategically placed stations near geothermal manifestations and fault zones. The MT method is highly effective for deep geothermal resource exploration, as it measures natural geomagnetic field variations to assess subsurface electrical resistivity. Data were collected over 16 hours at different frequencies (128 Hz, 1024 Hz, 4096 Hz) and analyzed using MAPROS, ZONDMT1D, and ZONDMT2D software, producing detailed subsurface resistivity models. The results identified low-resistivity zones at various depths, indicating potential geothermal reservoirs with hot fluids and thermally altered stones. Notably, the measurements revealed a heat source in the upper layer with a resistivity of over 350 ohm-m, and at point 3L1, the presence of a cap rock beneath the manifestation at a depth of 1-2 km with a resistivity of 0.7-1.6 ohm-m. Below this cap rock, a hot rock layer with a resistivity exceeding 350 ohm-m was detected. These findings highlight promising targets for further exploration, including directional drilling to confirm the presence and feasibility of geothermal resources. Developing geothermal energy in Kepahiang could offer a sustainable energy source, reduce fossil fuel dependence, and support regional economic growth by creating jobs and lowering greenhouse gas emissions. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Abstract (Croatian) Group: Ab Data: Indonezija, smještena na Pacifičkome vatrenom prstenu, ima 147 vulkana, od kojih je 76 još uvijek aktivno, što stvara optimalne uvjete za razvoj korištenja geotermalne energije. Okrug Kepahiang u pokrajini Bengkulu posebno je prikladan za istraživanja geotermalnoga potencijala, o čemu svjedoče vrući izvori, fumarole i drugi geotermalni fenomeni. Cilj je ovoga istraživanja poboljšati analizu podzemlja putem detaljnoga magnetotelurskog (MT) istraživanja 17 strateški postavljenih postaja u blizini manifestacija geotermalnih pojava i rasjednih zona. MT metoda vrlo je učinkovita za istraživanje dubokih geotermalnih resursa s obzirom na to da mjeri prirodne varijacije geomagnetskoga polja za procjenu podzemnoga električnog otpora. Podatci su prikupljani tijekom 16 sati na različitim frekvencijama (128 Hz, 1024 Hz, 4096 Hz), a analizirani su korištenjem softvera MAPROS, ZONDMT1D i ZONDMT2D stvarajući detaljne modele otpornosti. Rezultati provedenih analiza otkrili su zone niskoga otpora na različitim dubinama upućujući na potencijalna geotermalna ležišta i termičke anomalije u stijenama. Naime, mjerenja su otkrila izvor topline u gornjemu sloju s otporom od preko 350 Ohm-m, a u točki 3L1 prisutnost krovine ispod manifestacije na dubini od 1 do 2 km s otporom od 0,7 do 1,6 Ohm-m. Ispod navedene krovine detektiran je sloj vruće stijene s otporom većim od 350 Ohm-m. Ovi rezultati poticajni su za daljnja istraživanja uključujući usmjereno bušenje kako bi se potvrdila prisutnost i iskoristivost geotermalnih izvora. Razvoj korištenja geotermalne energije u Kepahiangu mogao bi ponuditi održivi izvor energije, smanjiti ovisnost o fosilnim gorivima i podržati regionalni gospodarski rast stvaranjem radnih mjesta i smanjenjem emisije stakleničkih plinova. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.17794/rgn.2025.4.2 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 15 Subjects: – SubjectFull: Geothermal resources Type: general – SubjectFull: Magnetotelluric prospecting Type: general – SubjectFull: Geological surveys Type: general – SubjectFull: Renewable energy sources Type: general – SubjectFull: Sustainable development Type: general – SubjectFull: Electrical resistivity Type: general – SubjectFull: Geothermal engineering Type: general – SubjectFull: Indonesia Type: general Titles: – TitleFull: Assessment of Geothermal Potential in Kepahiang District Using the Magnetotelluric Method for Renewable Energy Development. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Farid, Muchammad – PersonEntity: Name: NameFull: Suhartoyo, Hery – PersonEntity: Name: NameFull: Hadi, Arif Ismul – PersonEntity: Name: NameFull: Refrizon – PersonEntity: Name: NameFull: Al-Ansory, Andre Rahmat – PersonEntity: Name: NameFull: Raihana, Hana IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 03534529 Numbering: – Type: volume Value: 40 – Type: issue Value: 4 Titles: – TitleFull: Rudarsko-Geološko-Naftni Zbornik Type: main |
| ResultId | 1 |
