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Muhammad Irham
Departemen Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro, Semarang
Physics

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Aplikasi Metode Gravity Dengan Data Satelit Untuk Identifikasi Struktur Bawah Permukaan (Studi Kasus Semenanjung Muria) Hilda Ayu Noor Aulia Anisa; Rina Dwi Indriyana; Muhammad Irham
Youngster Physics Journal Vol 7, No 2 (2018): Youngster Physics Journal April 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Mass distribution beneath  Muria Peninsula was conducted with gravity methods to describe the subsurface mass distribution of the Muris peninsula. Anomalous data obtained from bgi.omp.obs. 3D modeling using Grablox and Bloxer software. 3D modeling results obtained five incisions consisting of two Eastern-directed incisions to the West, and three incisions pointing north to the South. The modeling results indicate a fault in the north of the study area and trails East to West, and a fault that extends over the Muria Mountain, north to south direction. Muria Basin with density of rock type 2.0 g / cc to 2.35 g / cc. The area is due to the sedia- tion of the muria peninsular, and the form of the continuous basin of Javanese anticlorium.Keywords: Gravity Method, density, gradient analysis, upward continuation, 3D modelling
INTERPRETASI STRUKTUR BAWAH PERMUKAAN DI MUARA SUNGAI PROGO MENGGUNAKAN METODE MAGNETIK Dewi Andri; Muhammad Irham; Udi Harmoko
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Progo fault is one of the active faults located in the south of Yogyakarta. Progo fault is suspected that located in Progo River estuary area, Banaran, DIY. However, studies are still needed to support the scientific basis of the position and the type of fault in Progo River estuary. Magnetic survey has been carried out in DIY Progo River estuary to determine the subsurface structure in the area. Data needed in the processing of magnetic data is a magnetic anomaly data obtained from the values of the total magnetic field strenghthas been corrected. In this study, magnetic data acquisition was carried out in 97 points by using a PPM (Proton Precession Magnetometer) geometrics 856X. Data Processing began with International Geomagnetic Reference Field (IGRF) correction and diurnal correction to get the total magnetic anomaly. The total magnetic anomaly contour created by using Surfer that has been used to process upward continuation and then made reduction to the poles. The result of research showed the total magnetic anomaly closure pair of positive and negative indicated a fault zone below the surface. Mag2D used to create 2D modelling to obtain the subsurface structure and susceptibility values. To reinforce the results of subsurface structure, 3- modelling has been created by used Mag3D. In 2D-modelling of subsurface structure is obtained in the form of fault zones in the west an the east of the River Progo. The interpretation is reinforced by the result of 3D-modelling in the area. There are tworeserve faults in Progo River estuary area, first in the west of the Progo River and second in east Progo River to a depth of 1000 meters.
Co-Authors Dewi Andri Hilda Ayu Noor Aulia Anisa Rina Dwi Indriyana Udi Harmoko