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Syahrial Ayub, M.Si
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Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal)
Published by Universitas Mataram
ISSN : 27232905     EISSN : 27232913     DOI : https://doi.org/10.29303/goescienceedu
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Education Physics
Jurnal Pendidikan, Sains, Geologi dan Geofisika (GeoScienceEd Journal): |e-ISSN: 2723-2913, p-ISSN: 2723-2905| diterbitkan 2 (dua) kali dalam setahun (Peride Juni dan Desember) dan dimulai pada bulan Juni 2020 oleh Program Studi Pendidikan Fisika FKIP Universitas Mataram. Artikel dapat diterima dalam Bahasa Indonesia dan Bahasa Inggris. GeoScienceEd merupakan wadah publikasi penelitian pendidikan, sains, geologi dan geofisika. Cakupan dari jurnal ini adalah artikel ilmiah berupa hasil penelitian yang meliputi pendidikan, sains, kebumian, geologi dan geofisika.
Arjuna Subject : Umum - Umum
Articles 1,197 Documents
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Kajian Geomorfologi Daerah Danau Ranau dan Sekitarnya Rahmadini, Sesaria; Sutriyono, Edy; Ibrahim, Mochammad Malik
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1682

Abstract

The Ranau Lake area and its surroundings are located along the Bukit Barisan Range, which constitutes an active volcanotectonic zone influenced by the Sumatran Fault System. This study was conducted to identify geomorphic units and to understand the geomorphological processes that contribute to the formation of the landscape in the study area. The analysis was carried out using morphographic, morphometric, and morphogenetic approaches by utilizing Digital Elevation Model (DEM) data, topographic maps, and field observations. The results indicate that the geomorphology of the Ranau Lake area is composed of volcanotectonic, denudational, and volcanic landforms, which have developed through the interaction of tectonic activity, erosional processes, and Quaternary volcanism. In general, the regional morphology is characterized by steep relief, variable slope gradients, and radial to dendritic drainage patterns influenced by geological structures and lithological conditions. This geomorphological study is expected to provide insights into the landscape evolution of the Ranau Lake area and serve as a basis for regional geological analysis and land-use planning.
Analisis Geomorfologi Daerah Jampang Tengah dan Sekitarnya, Kabupaten Sukabumi, Provinsi Jawa Barat Arsyad, Muhammad Astridho; Idarwati; Salni, Muhammad Alfath Salvano
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1686

Abstract

The geomorphological analysis of the Jampang Tengah area, Sukabumi Regency, West Java, aims to identify the ongoing geomorphological processes and geomorphic units within the study area. Based on its geographical location, the study area is part of the Bogor Basin, which is characterized by relatively unique geological settings in terms of stratigraphy, geological structure, and geomorphology. The geomorphic units were identified through several aspects, including morphological (physical) aspects consisting of morphography and morphometry, as well as morphodynamic aspects. The research was conducted using field observation methods and studio analysis based on Geographic Information Systems (GIS). The research process began with preliminary identification through the interpretation of Digital Elevation Model (DEM) data, which was correlated with field features through direct observations from various strategic points. Supporting phenomena were described and measured to collect geomorphological data. The identified geomorphic units in the study area include Highly Eroded Denudational High Hills, Moderately Eroded Denudational High Hills, Fault Zone High Hills, Synclinal Hills, and Karst Hills. These geomorphic units can be utilized as information for further studies, disaster mitigation support data, and regional development planning.
Stability Does Not Guarantee Accuracy: CFL-Compliant 1D Acoustic FDTD and Its Consequences for Near-Surface Layered Modeling Firdaus, Ruhul; Ekawati, Gestin Mey
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1693

Abstract

Explicit finite-difference time-domain (FDTD) solvers for the 1D acoustic wave equation are routinely configured by enforcing the Courant–Friedrichs–Lewy (CFL) stability limit. In near-surface settings, this practice can create a false sense of model fidelity because stability constrains time stepping but does not control phase and amplitude errors induced by numerical dispersion. This report isolates the gap between stable time marching and accurate waveform synthesis in layered, strongly contrasting near-surface media. Beyond the well-known stability–accuracy distinction, the specific contribution is a reproducible near-surface verification workflow that couples a transfer-matrix stratified benchmark with controlled bandwidth variation at fixed CFL and converts the resulting waveform misfits into an explicit dispersion budget and pass–fail acceptance gate. The intended deliverable is an independent verification note that demonstrates, with quantitative evidence, that CFL compliance is necessary for stability but insufficient for accuracy, and that near-surface forward modeling requires an explicit dispersion budget expressed in points per minimum wavelength and validated by waveform misfit diagnostics.
Studi Kematangan Batubara Formasi Warukin Berdasarkan Analisis Geokimia dan Reflectance Vitrinite di Barito Selatan, Kalimantan Tengah Nefia, Arica; Manek, Emanuel Grace
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1709

Abstract

The Warukin Formation is one of the principal coal-bearing units within the Barito Basin, where coal quality and maturity are strongly influenced by local geological conditions and thermal history. This study aims to determine the coal maturity level of the Warukin Formation in South Barito, Central Kalimantan, through the integration of geochemical analyses and vitrinite reflectance measurements. The methods employed include proximate and ultimate analyses, as well as vitrinite reflectance (Ro) measurements on four coal seams (Seams A, B, C, and D). Proximate analysis results on a dry mineral matter free (dmmf) basis indicate fixed carbon values ranging from 52.41–56.07%, volatile matter from 43.93–47.59%, and calorific values between 11,003.64–11,500.54 cal/g. These parameters consistently classify all seams as Subbituminous A coal rank according to ASTM standards. Vitrinite reflectance measurements show average Ro values ranging from 0.37% to 0.61%, generally corresponding to the Subbituminous rank, with localized increases up to High Volatile Bituminous C in Seam A. These findings indicate that the coal of the Warukin Formation in the study area exhibits low to moderate maturity, with localized variations in thermal maturity. The integration of geochemical data and vitrinite reflectance analysis proves effective in evaluating coal maturity and provides an important basis for assessing coal quality and utilization potential within the Barito Basin.
Interpretasi Sistem Panas Bumi Suwawa Berdasarkan Sudut Pandang Tektonik Dan Anomali Gravitasi Gustama, Muhammad Agni; Adianto, Mohamad Obby
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1719

Abstract

The Suwawa geothermal prospect is one of the areas officially designated as a Geothermal Working Area (WKP) in Gorontalo Province, Indonesia. Despite its WKP status, the Suwawa geothermal prospect has not been comprehensively studied from a regional perspective. Previous studies have not conclusively explained the geothermal heat source and the controlling tectonic framework within the Suwawa WKP. Understanding the heat source and tectonic conditions is essential for the effective development of a geothermal working area. This paper applies seismic tomography and satellite gravity methods to elucidate the characteristics of the geothermal system in the Suwawa WKP. Seismic tomography is employed to interpret large-scale tectonic correlations, while satellite gravity data are utilized to assist in identifying potential geothermal heat sources. The seismic tomography results indicate that the tectonic setting influencing the Suwawa WKP is associated with an extensional zone in Teluk Gorontalo. Meanwhile, satellite gravity anomalies suggest that the geothermal heat source in the Suwawa WKP is likely related to a basin structure. These findings imply that the geothermal system in the Suwawa WKP is associated with lithospheric thinning processes.
Efektivitas Model Teams Games Tournament Berbantuan Game Radio-Quest terhadap Pemahaman Hasil Belajar IPAS Siswa Sekarwangi, Putri Ayu; Masfuah, Siti; Ratnasari, Yuni
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1720

Abstract

This study aimed to analyze the effectiveness of the teams games tournament (TGT) learning model assisted by the radio-quest game in improving students’ learning outcomes in IPAS. The research employed a quantitative approach using a pre-experimental method with a one-group pretest–posttest design. The participants were all 20 sixth-grade students of SD 2 Bae. Data were collected through observation, interviews, documentation, and written tests in the form of pretest and posttest. Data analysis was conducted using the Shapiro–Wilk normality test and N-Gain analysis. The results showed that the average pretest score was 65, while the average posttest score increased to 84.5. The N-Gain score obtained was 0.5707, which is categorized as a moderate improvement, while the N-Gain percentage was 57.0685, indicating that the learning model was sufficiently effective. The analysis of cognitive indicators (C1–C6) also showed a moderate increase in all aspects. These findings indicate that the application of the teams games tournament model assisted by the radio-quest game is sufficiently effective in improving the IPAS learning outcomes of sixth-grade students at SD 2 Bae.
Pengaruh Problem Based Learning dengan Pendekatan Gasing dalam Pembelajaran Fisika terhadap Prestasi Belajar Peserta Didik SMA Nahdah, Shafira Suniyatun; A, Syahrial; Taufik, Muhammad
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1729

Abstract

This study aims to determine the effect of the Problem Based Learning (PBL) model with the GASING approach (Simple, Fun, and Enjoyable) in physics learning on the learning achievement of senior high school students. The background of this research is the low learning achievement of students caused by their tendency to use mathematical procedures in solving physics problems, which results in a lack of deep conceptual understanding. This research employed a quantitative approach with a quasi-experimental method using a nonequivalent control group design. The population consisted of all eleventh-grade students of SMAN 1 Sumbawa Besar, while the sample was selected using a purposive sampling technique, consisting of an experimental class treated with Problem Based Learning using the GASING approach and a control class using conventional learning. The research instrument was a multiple-choice achievement test that had been tested for validity, reliability, difficulty level, and discrimination index. The data were analyzed using prerequisite tests including normality and homogeneity tests, followed by hypothesis testing using an Independent Samples T-Test assisted by SPSS version 26. The results of the data analysis showed a significance value of 0.022 < 0.05, so H₀ was rejected and Hₐ was accepted. Thus, it can be concluded that there is a significant effect of the Problem Based Learning model with the GASING approach in physics learning on students learning achievement. The implementation of this learning model increases students active engagement, facilitates conceptual understanding, and makes the learning process more meaningful.
Evaluasi Performa DEM Sensor Visual (RGB) terhadap DEM Sensor LiDAR melalui Perbandingan Elevasi dan Volume Sedimen di Bendung Kamijoro Anggara, M Aziz; Wibowo, Afif Ari; Saputra, Aditya; Jumadi
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1731

Abstract

Sediment mapping is an important aspect of dam management because sediment accumulation can reduce storage capacity and interfere with intake performance. This study aims to compare the performance of Digital Elevation Models (DEM) derived from visual sensors (RGB) with LiDAR DEMs through elevation difference analysis and sediment volume estimation at the Kamijoro Dam. Data were obtained through Unmanned Aerial Vehicle (UAV) surveys at a flight altitude of 120 m, then processed to generate DEMs from each sensor. The analysis was conducted by calculating the elevation difference at the comparison points and comparing the estimated sediment volumes produced. The results showed that the visual DEM was able to represent the general surface elevation pattern, but showed greater elevation variation compared to the LiDAR DEM. The minimum elevation difference recorded was −4.3046 m, the maximum was 9.4975 m, with an average value of 1.0323 m. In the sediment volume estimation, the LiDAR DEM produced a volume of 85,612.456 m³, while the visual DEM produced 128,596.23 m³. This difference indicates a tendency for overestimation in the visual DEM, which is thought to be caused by limitations in separating the ground surface from vegetation and non-surface objects. Relative to the LiDAR DEM, these results show that the visual DEM has higher elevation variability in complex surface conditions.
Analisis Elektrofasies Berdasarkan Data Well Logging pada Seam Batubara A1–D di Pit N, Tanjung Enim, Sumatera Selatan Rafi, Muhammmad Rafi Al Hawari; Harnani
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1741

Abstract

The equitable distribution of educational facilities is a crucial aspect of supporting sustainable regional development, particularly at the senior high school level as part of the secondary education system. Inequality in school distribution may affect accessibility and equal educational opportunities across regions. This study aims to analyze the spatial distribution patterns and service coverage of senior high school facilities in Kabupaten Magetan. The research employs a quantitative approach using Geographic Information System (GIS)-based spatial analysis. Analytical techniques include mapping school distribution, applying the Average Nearest Neighbor (ANN) analysis to identify distribution patterns, and conducting buffer analysis to evaluate service accessibility to residential areas. The results indicate that educational facilities tend to form clustered patterns in areas with higher accessibility levels. Service coverage analysis also reveals disparities in accessibility among regions, where central areas demonstrate better service coverage compared to peripheral zones. These findings suggest that the equitable distribution of educational facilities still requires optimization in spatial planning to enhance educational access equity and support sustainable regional development.
Interpretasi Biomarker dan Korelasi Minyak-Batuan Induk pada Sumur TNG-1, Cekungan Sumatra Tengah Gustama, Muhammad Agni; Afifah, Putri Dwi; Komari, Sri Desdita; Lusitania; Rus, Aisyah Minzikrina Masbar; Atmoko, Widi
Jurnal Pendidikan, Sains, Geologi, dan Geofisika (GeoScienceEd Journal) Vol. 7 No. 1 (2026): Februari
Publisher : Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/goescienceed.v7i1.1742

Abstract

This study interprets biomarker characteristics and evaluates the genetic relationship between oil samples and potential source rocks from the TNG-1 well in the Cekungan Sumatra Tengah. The analysis was conducted using oil and rock geochemical parameters, n-alkane chromatograms, terpene and sterane distributions, as well as sterane ternary plots (C₂₇–C₂₈–C₂₉). The results indicate that oil samples at intervals of 5238–5277 ft, 5246–5248 ft, and 5266–5268 ft exhibit consistent geochemical characteristics and suggest thermal maturity within the early to mid-mature oil window. In contrast, rock samples at intervals of 4814 ft, 5046 ft, and 5151 ft show immature characteristics, indicated by CPI > 1.0, high Pr/nC₁₇ ratios, and n-alkane distributions biased toward long-chain compounds. Biomarker analysis reveals similarities in n-alkane distribution patterns, isoprenoid ratios, and C₂₇–C₂₈–C₂₉ sterane compositions between oil and source rock samples, indicating a strong genetic relationship. Sterane compositional correlation suggests that most samples, both oil and rock, originated from shallow lacustrine to estuarine depositional environments with significant higher-plant input. Overall, the oil samples show a strong correlation with the source rock at the 5151 ft interval based on the consistency of n-alkane, hopane, and sterane patterns.

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