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Thema Arrisaldi
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Jurnal Ilmiah MTG
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : 19790090     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Environmental Science
Jurnal Ilmiah Kebumian MTG (JMTG) is an Indonesian scientific journal published by the Geological Engineering Department, Faculty of Mineral and Technology, UPN "Veteran" Yogyakarta. The journal receives Indonesian or English articles. Those articles are selected and reviewed by our professional editors and peer reviewers. The published article in JMTG covers all geoscience and technology fields including Geology, Geophysics, Petroleum, Mining,Geography and geo-environment. The subject covers a variety of topics including : geodynamics, sedimentology and stratigraphy, volcanology, engineering geology, environmental geology, hydrogeology, geo-hazard and mitigation, mineral resources, energy resources, medical geology, geo-archaeology, applied geophysics and geodesy.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geologi
Articles 144 Documents
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Pengaruh Interaksi Air Tanah dan Air Sungai terhadap Konsentrasi Nitrat (NO3--N) di Sekitar Sungai Winongo, Kota Yogyakarta, D.I Yogyakarta ELSIANA, RIMA ANISA
Jurnal Ilmiah MTG Vol 14 No 2 (2023): Jurnal Ilmiah MTG Volume 14 No.2 Tahun 2023
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmtg.v14i1.11009

Abstract

AbstrakInteraksi antara air tanah dan air sungai pada akuifer bebas menunjukkan bahwa air tanah dan air sungai merupakan suatu kesatuan yang tidak dapat dipisahkan, terutama untuk kualitas kimia air. Penelitian ini meneliti mengenai jenis interaksi antara air tanah dan air sungai, serta pengaruhnya terhadap konsentrasi nitrat (NO3--N) di sekitar Sungai Winongo, Kota Yogyakarta, D.I.Y. Setelah dilakukan analisis elevasi muka air tanah dan interpretasi pola aliran air tanah maka ditentukan jenis interaksi air tanah dan air sungai di daerah penelitian adalah gaining stream, akan tetapi juga terdapat sistem losing stream di beberapa bagian kecil daerah penelitian. Interaksi air tanah dan air sungai tersebut mempengaruhi konsentrasi nitrat di daerah penelitian dimana pada sistem gaining stream, konsentrasi nitrat yang tinggi pada air tanah semakin menurun seiring berkurangnya jarak dengan sungai atau menurun mengikuti arah aliran air tanah yang menuju sungai. Sebaliknya, pada sistem losing stream, air sungai dengan konsentrasi nitrat rendah yang mengalir menuju air tanah mengakibatkan pencampuran air sehingga mengurangi konsentrasi nitrat pada air tanah. Akan tetapi, faktor lainnya, seperti kegiatan manusia/anthropogenik berkaitan erat dengan banyaknya konsentrasi nitrat selain dari interaksi antara air tanah dan air sungai itu sendiri. Kata Kunci: Gaining stream, Losing stream, Nitrat.
The use of PhaseNet and GaMMA in microseismic monitoring in geothermal fields Ambara Putra, I Putu Raditya
Jurnal Ilmiah MTG Vol 14 No 2 (2023): Jurnal Ilmiah MTG Volume 14 No.2 Tahun 2023
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmtg.v14i2.11436

Abstract

Due to its potential to decrease greenhouse gas emissions and decrease dependence on fossil fuels, geothermal energy has recently attracted more attention as a renewable and sustainable form of power generation. For evaluating the reservoir's integrity and understanding the underlying geomechanical processes in geothermal fields, microseismic monitoring is crucial. To accurately analyze and understand these microseismic occurrences, it is necessary to accurately identify their phases. Therefore, in this study, we used the PhaseNet-GaMMA combination to identify the arrival times of P and S and associate them to determine the microseismic events of these phases. PhaseNet-GaMMA succeeded in detecting a greater number of phases and events compared to catalog data, where the identification match rate was 85%. Even so, the time required for automatic detection of PhaseNet-GaMMA is relatively short and simple, so it is very good if used as an initial stage in the process of identifying phases and microevents in geothermal fields.
POTENSI GEOWISATA DI KECAMTAN LEBAKBARANG, KABUPATEN PEKALONGAN, JAWA TENGAH Arrisaldi, Thema
Jurnal Ilmiah MTG Vol 14 No 2 (2023): Jurnal Ilmiah MTG Volume 14 No.2 Tahun 2023
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmtg.v14i2.11850

Abstract

Abstrak – Lebakbarang merupakan salah satu kecamatan yang berada di Kabupaten Pekalongan dan berbatasan langsung dengan Kabupaten Banjarnegara. Kecamatan Lebakbarang terletak pada daerah dengan kondisi berlereng dengan kondisi morfologi berupa gunung dan lembah dan merupakan lereng selatan barat daya dari Gunung Rogojembangan. Potensi geowisata merupakan sesuatu hal yang dapat menambah nilai ekonomi suatu wilayah sehingga perlu untuk dilakukan pemetaan didalamnya. Dalam penelitian ini metode pemetaan geowisata didasarkan pada kondisi geologi dan geomorfologi serta beberapa wisata yang sudah ada di wilayah Kecamatan Lebakbarang. Kondisi geologi Kecamatan Lebakbarang didominasi oleh satuan breksi andesit sisipan lava dari Gunung Rogojembangan sedangkan kondisi geomorfologi berupa satuan geomorfologi gawir sesar dan graben. Sementara potensi geomorfologi berupa 3 airterjun berupa Curug Cinde, Curug Jaran, dan Curug Kuwung. Kata Kunci: Geowisata, Lebakbarang, Curug Jaran Abstract – Lebakbarang is a sub-district in Pekalongan Regency and directly borders Banjarnegara Regency. Lebakbarang District is located in an area with sloping conditions with morphological conditions in the form of mountains and valleys and is the southwestern slope of Mount Rogojembangan. Geotourism potential can add economic value to an area, so it is necessary to map it. In this research, the tourism mapping method is based on geological and geomorphological conditions as well as several existing tourist attractions in the Lebakbarang District area. The geological conditions of Lebakbarang District are dominated by lava-inserted andesite breccia units from Mount Rogojembangan, while the geomorphological conditions consist of fault scarp and graben geomorphological units. Meanwhile, the geomorphological potential is in the form of 3 waterfalls: Curug Cinde, Curug Jaran, and Curug Kuwung.Keywords: Geotourism, Lebakbarang, Waterfall
Facies Analysis From Kikim Formation in Garba Mountain, South Palembang Subbasin Daryono, Sapto Kis; Afrilita, Afrilita; Idarwati, Idarwati
Jurnal Ilmiah MTG Vol 14 No 2 (2023): Jurnal Ilmiah MTG Volume 14 No.2 Tahun 2023
Publisher : Jurusan Teknik Geologi Fakultas Teknologi Mineral UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmtg.v14i2.11854

Abstract

The Kikim Formation, especially the Cawang Member, has an important role in the formation and stratigraphic evolution of Paleogene age sedimentary rocks in the South Sumatra Basin because of their presence as pre-rift deposits. These deposits occurred before or simultaneously with the basin's formation. The results of research regarding facies analysis and interpretation of the depositional environment of the Kikim Formation located in the Garba Mountains will provide an explanation and description of the history of the formation and stratigraphic evolution of Paleogene age sedimentary rocks in the South Sumatra Basin as reflected in their lithological and facies characteristics. Facies analysis was conducted on the stratigraphic cross-section of the conglomerate deposit and sandstone deposit 1. The conglomerate deposit and sandstone deposit had thicknesses of ± 158.82 m and ± 177.50 m, respectively, on the Bumi Agung and Batu Belang measurement lines, South Ogan Komering Ulu area, Sumatra South. Facies analysis leads to the division of facies according to Miall (1978), namely eight lithofacies, namely Gravel matrix supported massive (Gmm), matrix supported Gravel (Gmg), massive Gravel (Gm), massive Sandstone (Sm), horizontally bedded Sandstones (Sh), low angel cross-bedding Sand (SI), Carbonaceous mud (C), massive Fine sandstone silt mud (Fm), Massive siltstones, and mudstones (Fsm). The facies associations obtained were Gravel Bars (GB), Sandy Bedforms (SB), channel (CH), and Overbank fine (FF). It showed that the depositional environment was a fluvial environment, and it was found that the type of river in the research area in the Kikim Formation was a braided river with Gravel braided rivers with sedimentary gravity flows model.

Page 15 of 15 | Total Record : 144

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