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Curie Point Depth Analysis of Lesugolo Area, East Nusa Tenggara, Indonesia Based on Ground Magnetic Data

Journal of Engineering and Technological Sciences · Vol. 54 No. 1 (2022)

DOI
10.5614/j.eng.technol.sci.2022.54.1.11
ISSN
2338-5502, 2337-5779
Terbit
2022-02-10
Penerbit
Directorate for Research and Community Services, Institut Teknologi Bandung
Bahasa
eng

Abstrak

The Curie point depth, or magnetic basal depth, of the Lesugolo geothermal area in Ende, Flores Island, East Nusa Tenggara, Indonesia was estimated by performing spectral analysis on spatial magnetic data and transforming it into the frequency domain, resulting in a link between the 2D spectrum of magnetic anomalies and the depths of the top and centroid of the magnetic sources. Shallow Curie point depths of 16 to 18 km were found in the north-northeast to southeast areas of Lesugolo, while deeper depths of 24 to 26 km were found in the southwest. The tectonic setting beneath the central part of Flores Island governs the distribution of the Curie point depths in the area. Shallow Curie point depth zones are associated with high thermal gradients (30 to 34 °C/km) and heat flow (80 to 100 mW/m2). Deep depths, on the other hand, correspond to zones of low thermal gradient (21 to 26 °C/km) and low heat flow (65 to 80 mW/m2). Both the derived thermal gradient and the heat flow maps contribute to a better understanding of the Lesugolo geothermal system’s configuration. This study suggests that the Lesugolo geothermal area’s prospect zone is located in the center of the investigated area, where the Lesugolo normal fault forms its southeastern boundary.

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  • Padjadjaran University
  • Bandung Institute of Technology
  • Sumatera Institute of Technology
  • Universitas Flores
  • Badan Geologi
  • Universitas Bhayangkara Jakarta Raya
  • RheinMain University of Applied Sciences
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Rekan penulisOrganisasiArtikel bersama
Irwan MeilanoBandung Institute of Technology3
Mitra DjamalBandung Institute of Technology2
Ratih KumalasariUniversitas Bhayangkara Jakarta Raya2
Cevilla Amalia PrameswaryPadjadjaran University2
Fataya Tasya DonitaPadjadjaran University2
Kartika Hajar KiranaPadjadjaran University2
Acep PurqonBandung Institute of Technology2
Doddy SutarnoBandung Institute of Technology2
R. KurniaBandung Institute of Technology1
Suprijadi SuprijadiBandung Institute of Technology1
Melany FebrinaSumatera Institute of Technology1
Eko SatriaSumatera Institute of Technology1
Martin LiessRheinMain University of Applied Sciences1
Husnul HamdiAfiliasi tidak diketahui1
Linda HandayaniUniversitas Jambi1
Hendra Edi GunawanBandung Institute of Technology1
Hendra GunawanPusat Vulkanologi dan Mitigasi Bencana Geologi1
Mitra DjamalBandung Institute of Technology1
Nabilah RahmawatiPadjadjaran University1
Bilqis Aulia PutriPadjadjaran University1
Amira Sasanti Nugroho PutriPadjadjaran University1
Epiphani EkklesiaPadjadjaran University1
Anggie SusilawatiPadjadjaran University1
Muhammad Alkuansinta RohmanPadjadjaran University1
Muhammad Raihan Saeful IhsanPadjadjaran University1
Dini FitrianiPadjadjaran University1
Fadia Tri SeptianiPadjadjaran University1
Bayu Gusti Pangestu AjiPadjadjaran University1
Dini FitrianiPadjadjaran University1
Maharani ArisandyPadjadjaran University1
Luthfi Tanton AtthailahPadjadjaran University1

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Sumber metadata: OAI-PMH (metadata jurnal) https://journals.itb.ac.id/index.php/jets/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Curie Point Depth Analysis of Lesugolo Area, East Nusa Tenggara, Indonesia Based on Ground Magnetic Data</dc:title>
	<dc:creator>Singarimbun, Alamta</dc:creator>
	<dc:creator>Said, Umar</dc:creator>
	<dc:creator>Andriani, Dini</dc:creator>
	<dc:creator>Astro, R. B.</dc:creator>
	<dc:creator>Bakrun, Bakrun</dc:creator>
	<dc:creator>Djaja, I G. P. F. Soerya</dc:creator>
	<dc:creator>Agustine, Eleonora</dc:creator>
	<dc:creator>Supendi, Pepen</dc:creator>
	<dc:creator>Srigutomo, Wahyu</dc:creator>
	<dc:subject xml:lang="en-US">Curie  point  depth</dc:subject>
	<dc:subject xml:lang="en-US">Flores  Island</dc:subject>
	<dc:subject xml:lang="en-US">geothermal  system  of  Lesugolo</dc:subject>
	<dc:subject xml:lang="en-US">ground magnetic data</dc:subject>
	<dc:subject xml:lang="en-US">spectral analysis</dc:subject>
	<dc:description xml:lang="en-US">The Curie point depth, or magnetic basal depth, of the Lesugolo geothermal area in Ende, Flores Island, East Nusa Tenggara, Indonesia was estimated by performing spectral analysis on spatial magnetic data and transforming it into the frequency domain, resulting in a link between the 2D spectrum of magnetic anomalies and the depths of the top and centroid of the magnetic sources. Shallow Curie point depths of 16 to 18 km were found in the north-northeast to southeast areas of Lesugolo, while deeper depths of 24 to 26 km were found in the southwest. The tectonic setting beneath the central part of Flores Island governs the distribution of the Curie point depths in the area. Shallow Curie point depth zones are associated with high thermal gradients (30 to 34 °C/km) and heat flow (80 to 100 mW/m2). Deep depths, on the other hand, correspond to zones of low thermal gradient (21 to 26 °C/km) and low heat flow (65 to 80 mW/m2). Both the derived thermal gradient and the heat flow maps contribute to a better understanding of the Lesugolo geothermal system’s configuration. This study suggests that the Lesugolo geothermal area’s prospect zone is located in the center of the investigated area, where the Lesugolo normal fault forms its southeastern boundary.</dc:description>
	<dc:publisher xml:lang="en-US">Directorate for Research and Community Services, Institut Teknologi Bandung</dc:publisher>
	<dc:date>2022-02-10</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journals.itb.ac.id/index.php/jets/article/view/15461</dc:identifier>
	<dc:identifier>10.5614/j.eng.technol.sci.2022.54.1.11</dc:identifier>
	<dc:source xml:lang="en-US">Journal of Engineering and Technological Sciences; Vol. 54 No. 1 (2022); 220111</dc:source>
	<dc:source>2338-5502</dc:source>
	<dc:source>2337-5779</dc:source>
	<dc:source>10.5614/j.eng.technol.sci.2022.54.1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journals.itb.ac.id/index.php/jets/article/view/15461/5644</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2022 Journal of Engineering and Technological Sciences</dc:rights>
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