Sarkowi, Muh (2010) IDENTIFIKASI STRUKTUR DAERAH PANASBUMI ULUBELU BERDASARKAN ANALISA DATA SVD ANOMALI BOUGUER. J. Sains MIPA, 16 (2). pp. 111-118. ISSN 1978-1873

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Abstract

Ulubelu geothermal field is situated in Lampung, southern Sumatra, Indonesia. The field is at the southern end of the Great Sumatra Fault. The field is located in high terrain. The field lies in steep terrain between 300 and 1600 m above sea level (a.s.l.). Most elevations in its central part are about 700 to 800 m (a.s.l.), the higher volcanic terrains of Mts. Rindingan, Kukusan and Sula surround it .The gravity survey was done by PT. PERTAMINA to understand the subsurface structure at Ulubelu geothermal field.Gravity data were corrected by : normal gravity, free air correction, Bouguer corrections, and terrain correction to obtained Bouguer anomaly. Low Bouguer anomaly in the North area between Mt Rindingan and Duduk. This anomaly caused of piroclastic rock from Mt. Rindingan filling up graben in this area. Hight Bouguer anomaly at south area at Mt. Kukusan may be caused exixtence of high density rock which possibility become hot source in the area. Second vertical derivative Bouguer anomaly represent one of technique which can be used to get the local effect from anomali Bouguer.In this researh we used operator SVD from Elkins formulations. Map SVD anomali Bouguer of area Ulubelu show the existence of negative anomaly at Northen area betwen Mt. Rindingan and Duduk and at Southwestern area (west of Mt. Kukusan). Its indication that this area represent the graben and the fault structure NW-SE and NE-SW direction. From correlation of well data indicate that the this negative anomali represent the prospect geothermal at Ulubelu area specially the area between Mt. Rindingan and Duduk.

Item Type:	Article
Subjects:	T Technology > T Technology (General)
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User:	MUHAMMAD S
Date Deposited:	12 Jun 2020 04:21
Last Modified:	12 Jun 2020 04:21
URI:	http://repository.lppm.unila.ac.id/id/eprint/22328

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