Yudhaprasetyo, Rizky and Muchtar, Alimuddin and Yadi Paembonan, Andri and Zarkasyi, Ahmad Indetifikasi Struktur Bawah Permukaan Daerah Panas Bumi Lapangan “ Z “ Berdasarkan Pemodelan 2-D Data Magnetotellurik. Journal of Science and Applicative Technology. ISSN 2581-0545

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Abstract

Geothermal energy in Indonesia has not been fully utilized. many factors influence this problem, but one of them is lack of subsurface data that describes the area of geothermal potential. In this study, the aim of this research is to complement this deficiency by identify the geothermal structure of the "Z" field based on magnetotelluric data modeling. This method is very good in identify geothermal structures because of its very deep penetration range and it can present a good resistivity contrast between layers and that will produce very good subsurface information. Based on the results of inversion modeling and some supporting data, there are several main fault structures that make up the geothermal system in the study area. Normal Fault (BBL – TTG / N 280 - 300 ° E) forms an intrusion area, Transcurent Fault (TL– BD / N 15 - 25 ° E), cutting into the basement resulting in the emergence of the Cikawah hot spring manifestation. Transcurent fault (TTL - BBD / N 60 - 80 ° E), cut into the bedrock (basement) resulting in sealing in the manifestation of Cikawah hot springs. Because the activity of this fault structure, a fluid circulation is formed which rises to the surface due to thermal buoyancy forces. From this fluid circulation and support geology conditions, geothermal systems formed by the components of clay agrilic as Caprock, pyroclastic rocks as a reservoir and source of heat derived from andesite intrusion.

Item Type:	Article
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User:	Dr. Alimuddin Muchtar
Date Deposited:	04 Jun 2021 01:34
Last Modified:	04 Jun 2021 01:34
URI:	http://repository.lppm.unila.ac.id/id/eprint/31937

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