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Jochanan Benaya Lumban Tobing
Department of Geophysical Engineering, Faculty of Engineering, Universitas Lampung, Jl. Prof. Soemnantri Brojonegoro No. 1, Bandar Lampung 35143, Indonesia
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Geological Structure Identification using Derivative Analysis of Gravity Method Rahmat Catur Wibowo; Jochanan Benaya Lumban Tobing; Alimudin Alimudin
Jurnal Inovasi Teknologi Vol 3 No 2 (2022): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/jit.v3i2.5048

Abstract

The gravity method is a geophysical method that can be used for exploration activities to identify subsurface geological structures through variations in the gravitational field due to differences in rock mass density below the surface based on measurements of variations in the earth's gravitational field. In this study, the gravity method was used to detect subsurface structures. The modeling is used to identify based on the gravity anomaly data that has been obtained and also see the structure of the regional geology of the area. The values ​​depicted at the study site for the complete Bouguer anomaly range from 69.3 mGal to 95.5 mGal. The first horizontal derivative map of the research area shows the maximum value as the contact area or changes in the value of the anomaly caused by geological structures. Then the second vertical derivative map shows the 0-boundary plane identified by faults. In the analysis of the FHD curve, it shows that there is a maximum value that indicates the boundary of the contact area of ​​the layer, and SVD shows a value that passes the zero limit so that it delivers the existence of a fault structure in the Suoh area of ​​West Lampung.
Co-Authors Alimuddin Muchtar Wibowo, Rahmat Catur