3D Gravity Data Modelling for Determining a Subsurface structure of The SDP Geothermal Field. (May 2019)

• Record Type: Journal Article
• Authors: Meilasandi, T; Sugianto, A; Indriana, R D; Harmoko, U
• Is Part Of: Journal of physics. Volume 1217(2019)
• Publication Date: 2019-05
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1217/1/012042
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: The SDP geothermal research area geographically located in eastern Indonesia where there are geothermal manifestations of hot springs. 3D modeling and vertical-horizontal gradient analysis are used to determine the presence of subsurface structures of the study area. Separation of complete Bouguer anomaly data to obtain regional and residual anomalies has been done by upward continuation. The results of the horizontal and vertical gradients indicate that the presence of the geothermal manifestation of MAP 1 hot spring is controlled by the presence of trending northwest-to-southeast fault. We interpret the emergence of manifestations due to the presence of a permeable zone in the form of the fault structure. 3D modeling shows the existence of alluvium sediment, sedimentary rocks, limestones, ultrabasas (peridotite), granite, metagranite, gneiss and the presence of trending northwest trending to the southeast fault.