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Desiderius Jarut
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Earth & Planetary Sciences Electrical & Electronics Engineering Environmental Science Materials Science & Nanotechnology Physics

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Pemodelan 3D Struktur Bawah Permukaan Gunung Anak Ranakah dan Sekitarnya Menggunakan Metode Gravitasi Desiderius Jarut; I Ketut Sukarasa; Ida Bagus Alit Paramarta
BULETIN FISIKA Vol 23 No 1 (2022): BULETIN FISIKA February Edition
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/BF.2022.v23.i01.p09

Abstract

Research has been carried out on 3D modeling of the subsurface structure of Mount Anak Ranakah and its surroundings. This study aims to create a map and determine the value of the complete bouguer anomaly, regional anomaly, residual anomaly, subsurface density value and create a 3D model of the subsurface structure. The data used is secondary data, namely satellite gravity anomaly data obtained from the Topex website. Data processing in this study using the gravity method. In this method, gravity correction will be carried out, making a complete bouguer anomaly map, performing spectrum analysis, separating regional and residual anomalies using a butterworth filter and performing inverse modeling using ZondGM3D software to create a 3D model of subsurface structures. The results of the complete Bouguer anomaly map show the anomalous value of the study area between 134.6-209.3 mGal, regional anomaly 147.4-205.9 mGal and residual anomaly between (-12.8)-11.0 mGal. The inverse modeling results show that the subsurface geological structure of Mount Anak Ranakah and its surroundings has a density range between 1.2-3.0 g/cm3, so that from the range of rock density values ??it can be estimated that the subsurface geological structure of Anak Ranakah and its surroundings consists of soil rock (1.2-2.3 g/cm3) andesite 2.40-2.80 g/cm3) and basalt (2.70-3.0 g/cm3).
Co-Authors Ida Bagus Alit Paramarta Sukarasa, I Ketut