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All Journal Indonesian Journal of Geography IJOG : Indonesian Journal on Geoscience Seminar Nasional Informatika (SEMNASIF) Jurnal Pendidikan Geografi: Kajian, Teori, dan Praktik dalam Bidang Pendidikan dan Ilmu Geografi Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Geomine KURVATEK Jurnal Geosains dan Remote Sensing (JGRS) Journal of Applied Geology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources)
Agung Setianto
Departemen Teknik Geologi, Fakultas Teknik, Universitas Gadjah Mada, Yogyakarta
Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics Social Sciences

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ANALISIS MORFOLOGI DETIL UNTUK MEMETAKAN KARAKTERISTIK SATUAN BATUAN PERMUKAAN Maritimo, Febrian; Budianta, Wawan; Setianto, Agung
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5740

Abstract

Regional spatial planning requires accurate data according to the planning scale. One of the problems encountered in the analysis of spatial planning in Indonesia is the unavailability of some basic data that have a level of detail according to planning needs, including geological data. RTRWK requires a map at a scale of 1:50,000, while the availability of a Geological Map at a Scale of 1:50,000 from the Ministry of Energy and Mineral Resources is still very limited. This study aims to produce surface geological distribution data and its characteristics needed in spatial planning with a morphological analysis approach. Detailed morphological analysis is carried out by processing Digital Elevation Model data with a spatial resolution of 8 meters. Detailing of the morphological classification is carried out on the BMB classification. Morphological interpretation is carried out in stages by dividing the land surface from general to detailed, producing classes of high ridged hills, low ridged hills, undulating valleys between hills and plains. Landform interpretation is carried out by adding geological structure data and rock types in the analysis, producing landform classes of high hills elongated fault zones, low hills elongated fault zones, undulating valleys between hills in fault zones, and alluvial plains. Landform units of elongated hills of fault zones can be detailed based on the relief pattern and slope gradient into ridge, steep slope, and gentle slope. Low hills elongated fault zones can be divided into ridge and gentle slope. Meanwhile, the undulating valleys between the hills of the fault zone and the alluvial plains do not show any further variations. The andesite breccia rock unit is the lithology that forms the morphology of elongated ridged hills, the undulating valleys between the hills are formed from andesite breccia colluvium rock units, while the alluvial plains are formed from alluvium rock units. The division of detailed morphology in the hills reflects the differences in the characteristics of the degree of weathering of the rocks and the weathering materials. The andesite breccia rock unit on the ridge experiences strong weathering and produces a lot of in-situ soil material. The andesite breccia bedrock exposed on steep slopes experiences early weathering with thin soil deposits on top and has several andesite boulders deposited in the bends of the slopes. Gentle slopes have surface rock units dominated by colluvium material. This unit consists of andesite breccia boulders scattered on the surface mixed with weathered soil material from ridge and/or steep slopes. The undulating valleys between hills also have characteristics of surface rock units consisting of andesite breccia boulders on the land surface with thick soil resulting from the accumulation of weathered soil from the hills. Alluvial rock units on alluvial plains do not reflect significant variations.
The Knowledge Driven as Fundamental Analysis in The Geothermal Exploration Activity: Dieng Geothermal Field Study Area Hardiyanto, Dwi Wahyu; Setianto, Agung; Harijoko, Agung
Indonesian Journal of Geography Vol 57, No 3 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.102388

Abstract

Geothermal exploration activities involve a high degree of uncertainty and financial risk, thereby requiring exploration analyses that can support accurate decision-making. This study presents a geothermal exploration method for determining the Geothermal Potential Index (GPI) by integrating surface geological, geophysical, and geochemical data.  The main problem addressed in this study is the testing of a method for conducting geothermal exploration by integrating multiple parameters. Accordingly, this research applies a knowledge-driven approach through the Analytic Hierarchy Process (AHP) to develop a tentative Geothermal Potential Index (GPI) model. The Analytical Hierarchy Process (AHP) serves as a reliable methodological framework for assessing the Geothermal Potential Index by integrating newly obtained and pre-existing data. By incorporating suitability analysis, identifying prospective resources, and formulating geothermal resource criteria, this approach establishes a solid basis for systematic evaluation during the geothermal exploration phase. The tentative model of the geothermal potential index (GPI) for the Dieng volcanic complex has been identified into five zones: Pagerkandang Zone, Siglagah Zone, Pangonan-Merdada Zone, Campursari Zone, and Pakuwaja Zone.
Co-Authors Adelia Saras Nugraheni Agung Harijoko Anastasia Dewi Titisari Bayu Raharja Bayu Raharja Bayu Raharja Bayu Raharja Chhuon Kong Doni Prakasa Eka Putra Dwi Wahyu Hardiyanto Dwi Wahyu Hardiyanto Dwika Rizki Wirawan Dwikorita Karnawati Eman Widijanto Esti Handini Freski, Yan Restu Gayatri Indah Marliyani Hady, Aulia Kurnia Hardiyanto, Dwi Wahyu Haryo Edi Wibowo Helmi, Hurien Hendy Setiawan Heru Hendrayana Jihad, Abdi Junji Kiyono Junji Kiyono Kambali, Retno Agung Prasetyo Kirbani Sri Brotopuspito Kirbani Sri Brotopuspito Kirbani Sri Brotopuspito Kiyono, Junji Klinger, Yann Kong, Chhuon Kurniawan, Telly Lenggono, Tego Maritimo, Febrian Moktikanana, Mradipta Lintang Alifcanta Pyi Soe Thein Pyi Soe Thein Raharja, Bayu Rahayu, Eti Rusdin, Andi Azhar Setiawan, Yosi Srijono Srijono Srijono Srijono Srijono Srijono, Srijono Subagyo Pramumijoyo Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Sugito, Zulham Supriyanto Rohadi, Supriyanto Tamia Triandini Tego Lenggono Thein, Pyi Soe Triandini, Tamia Triyono, Rahmat Wahyu Wilopo Wawan Budianta Widijanto, Eman Yustian Ekky Rahanjani