Analisis dan Pemodelan Inversi 3D Sturktur Bawah Permukaan Daerah Panas Bumi Iyang-Argopuro Berdasarkan Data Gaya Berat

Anisa, Nurul (2024) Analisis dan Pemodelan Inversi 3D Sturktur Bawah Permukaan Daerah Panas Bumi Iyang-Argopuro Berdasarkan Data Gaya Berat. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 01111940000081-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2026. Download (4MB) | Request a copy

Abstract

Provinsi Jawa Timur memiliki 13 titik potensi panas bumi dan salah satunya terletak di Gunung Iyang-Argopuro. Potensi panas bumi yang terkandung di Gunung Iyang-Argopuro sebesar 295 MW dikontrol oleh struktur kawah dan patahan. Berdasarkan analisis derivatif bahwa pada area panas bumi Gunung Iyang-Argopuro Penelitian ini bertujuan untuk untuk menganalisis struktur geologi dan memodelkan kondisi bawah permukaan area manifestasi panas bumi. Oleh karena itu dilakukan penelitian menggunakan metode gravitasi satelit GGMplus, berdasarkan metode analisis derivatif First Horizontal Derivative (FHD) dan Second Vertical Derivative (SVD) serta inversi 3 dimensi. teridentifikasi struktur patahan dengan jenis patahan naik dan patahan normal. Berdasarkan hasil pemodelan inversi 3D dan telah dikonfirmasi dengan peta geologi regional diketahui terdapat 3 kelompok satuan batuan yang menyusun sistem panas bumi Iyang-Argopuro, yakni lapisan pertama merupakan lapisan paling atas (top soil) yang di bawahnya terdapat lapisan caprock pada kedalaman 0 – 2,67 km dengan densitas batuan 2,43 – 2,60 g/cm3 yang diduga berupa batuan teralterasi, batu lempung, dan batu andesit. Lapisan kedua merupakan reservoir pada kedalaman 2,67 – 4,41 km dengan densitas batuan 2,60 – 2,70 g/cm3 yang diduga tersebar batu andesit dan batu basalt. Dan, lapisan ketiga merupakan lapisan hot rock pada kedalaman 4,41 – 6,00 km dengan densitas batuan 2,70-2,99 g/cm3 yang diduga tersebar batu andesit, batu basalt, dan batu gabbro mikro.
=================================================================================================================================
East Java Province has 13 geothermal potential points and one of them is located on Mount Iyang-Argopuro. The geothermal potential contained in Mount Iyang-Argopuro is 295 MW controlled by crater and fault structures. This research aims to analyze the geological structure and model the subsurface conditions of geothermal manifestation areas. Therefore, research was carried out using the GGMplus satellite gravity method, based on the First Horizontal Derivative (FHD) and Second Vertical Derivative (SVD) derivative analysis methods as well as 3-dimensional inversion. Based on derivative analysis, in the Mount Iyang-Argopuro geothermal area, fault structures with ascending and normal fault types have been identified. Based on the results of 3D inversion modeling and confirmed with regional geological maps, it is known that there are 3 groups of rock units that make up the IyangArgopuro geothermal system, namely the first layer is the top layer (top soil) beneath which there is a caprock layer at a depth of 0 – 2.67 km with a rock density of 2.43 - 2.60 g/cm3 which is thought to be altered, clay, and andesite rocks. The second layer is a reservoir at a depth of 2.67 – 4.41 km with a rock density of 2.60 – 2.70 g/cm3 which is thought to be scattered with andesite and basalt rocks. And, the third layer is a hot rock layer at a depth of 4.41 – 6.00 km with a rock density of 2.70 – 2.99 g/cm3 which is thought to be scattered with andesite, basalt, and micro gabbro rocks.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	First horizontal derivative, second vertical derivative, caprock, hot rock, turunan pertama mendatar, turunan kedua vertikal, batuan penudung, batuan panas
Subjects:	Q Science > QE Geology > QE601 Geology, Structural
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Nurul Anisa
Date Deposited:	15 Feb 2024 02:59
Last Modified:	15 Feb 2024 03:00
URI:	http://repository.its.ac.id/id/eprint/106998

Actions (login required)

View Item