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INDONESIA
Journal of Geoscience, Engineering, Environment, and Technology
Published by Universitas Islam Riau
ISSN : 2503216X     EISSN : 25415794     DOI : 10.25299
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Engineering Environmental Science Physics
JGEET (Journal of Geoscience, Engineering, Environment and Technology) published the original research papers or reviews about the earth and planetary science, engineering, environment, and development of Technology related to geoscience. The objective of this journal is to disseminate the results of research and scientific studies which contribute to the understanding, development theories, and concepts of science and its application to the earth science or geoscience field. Terms of publishing the manuscript were never published or not being filed in other journals, manuscripts originating from local and International. JGEET (Journal of Geoscience, Engineering, Environment and Technology) managed by the Department of Geological Engineering, Faculty of Engineering, Universitas Islam Riau.
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Articles 551 Documents
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Analysis Of River Ordo In The Tukad Balian Watershed (DAS), Bali Province, Indonesia Sinaga, Mardame Pangihutan; Simanullang, Ady Frenly; Siburian, Daniel Tony Edyt; Joko Barita Sianipar; Sianipar, Herna Febrianty; Sianturi, Tambos August
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.18927

Abstract

River order research in Tukad Balian Watershed, Bali Province uses ArcGIS Pro to process ASTER GDEM and National DEM data. The analysis is based on: the area and Perimeter of the Watershed, Watershed Length and Width, Land Slope, Average Height, Order and Level of River Branching. The results obtained for the Watershed show that the morphometric value is an area of 15485,20 hectares, a length of 23,08 km, a land slope of 0,40%, and 5 orders of branching rivers with a total of 665 river sections. The shape of Watershed Tukad Balian roundness index value is 7,2. GIS is an effective system for reducing Watershed morphometric information. The research method used is to directly calculate the morphometric parameters of the Tukad Balian Watershed, Bali Province, namely: Area and Perimeter of the Watershed; Watershed Length and weight; River slop or gradient; Average Height; Order and Level of River Branching; Flow Density; and Watershed Form. The conclusion obtained is: The Tukad Balian watershed is a standard-sized watershed with an area of 15.485,20 Ha an average height of 200 meters above sea level and the main river channel is 10,71 Km long. There a plot sections with a total length of 23,08 Km; The elongated shape of the Tukad Balian watershed is in the medium category, where the Tukad Balian Watershed will not experience major flooding.
Optimization of Aceh Low Rank Coal Upgrading Process with Combination of Heating Media to Reduce Water Content through Response Surface Method Mardhiyah, Fadhilah Al; Mahidin; Fauzi; Faisal Abnisa; Khairil
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19228

Abstract

This research aims to improve the rank of coal in Aceh, which is known to have a relatively high moisture content of 44-52%. The upgrading process is carried out by using hot water, and hot oil as media combined with microwaves to remove moisture content in coal. The process was carried out using microwave rotary dryer equipment by varying the coal particle size of 10, 20, and 30 mesh, and the time for 20, 40, and 60 minutes. Response surface methodology utilizing the Central Composite Design (CCD) approach was employed to ascertain the optimal conditions for low rank coal, culminating in nine experimental runs involving low rank coal. The validation of the derived quadratic polynomial model has been conducted, yielding a correlation coefficient (R²) value of 0.994. The optimization process aimed at maximizing the moisture content of low rank coal at 4.906 kg, which resulted in a 20% reduction by adjusting the particle size to 5 Mesh M and the duration to 20 minutes, respectively. Consequently, this research is anticipated to serve as a foundational reference for the advancement of coal upgrading methodologies in Aceh, facilitating their transition from laboratory scale to commercial implementation.
Coulomb Stress Change of Active Fault in South Sumatra Region Revealed from Kerinci Earthquake October 06, 1995 Mw 6.7 and Sungai Penuh Earthquake October 01, 2009 Mw 6.6 Fadhlurrohman, Rafi; Syafriani, S.; Raharjo, Furqon D.; Yusran Asnawi; Ahadi, Suaidi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.3.19273

Abstract

We successfully highlight the correlation of Static Stress Change (ΔCFF) in the Kerimci earthquake October 06, 1995 Mw 6.7 and Sungai Penuh earthquake October 01, 2009 Mw 6.6 earthquakes to the seismicity conditions. The data used in this study are focal mechanism obtained from Global Centroid Moment Tensor (GCMT) and seismicity obtained from USGS with M ≥ 4 after the main earthquake with a time span of 11 years. ΔCFF obtained in the Mentawai Fault System area has increased coulomb stress. ΔCFF obtained in the Suliti Segment, Ketaun Segment, and Back arc Basin of Jambi experienced an increase in stress, which can indicate the potential for future earthquakes, but there was no increase in seismicity. Besides that, ΔCFF in areas that experienced a decrease in stress, experienced an increase in seismicity. This is caused by background seismicity in the area and several factors influence the results of the calculation of ΔCFF against seismicity. Simplicity in calculation causes difficulty in explaining seismicity, especially in the blue lobe. Moreover, the use of receiver fault mechanism produces a very large error in the complex regional stress field. The use of a constant friction coefficient also produces a very large error in the calculation.
The Influence of Slope, Rock Characteristics and Meteorological Data to Landslide: A Case Study in The Northernmost Sumatra, Indonesia Idris, Mochammad V.; Muksin, Umar; Syukri, Muhammad
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19420

Abstract

Landslides are natural disasters that can be caused by high rainfall intensity. Aceh Besar Regency has been hit by landslides 40 times from 2014 to 2023. Aceh Besar Regency serves as an economic connecting route from other cities to the provincial capital of Aceh, Banda Aceh. Therefore, when landslides occur in that area, it will disrupt the economic stability and logistic distribution to other regions. The weighted overlay method maps landslide-prone areas in Aceh Besar Regency. This research aims to create a map of landslide-prone areas in Aceh Besar Regency based on parameters causing landslides, namely slope inclination, rainfall, rock type, soil type, and land cover. The research findings indicate that almost the entire region of Aceh Besar has a moderate to high potential for landslide disasters. The main factor causing landslides in Aceh Besar is its topography, which is dominated by mountains and hills, and the moderate to very high rainfall intensity. The landslide-prone disaster map is validated by landslide incidents recorded by BPBD Aceh Besar from 2014 to 2023, showing results that align with the historical data. This map can be used by relevant authorities and the general public to undertake landslide disaster mitigation in Aceh Besar Regency.
Impact on Extreme Rainfall and Flood Events during Boreal Summer Intraseasonal Oscillation (BSISO) in Aceh Province, Indonesia Qalbi, Harisa Bilhaqqi; Abdullah, Faisal; Ismail, Nazli
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19421

Abstract

The Boreal Summer Intraseasonal Oscillation (BSISO) is intraseasonal climate variability in addition to the Madden-Julian Oscillation (MJO) that affects weather and climate in the Indo-Pacific region including the Province of Aceh. The impact of BSISO on extreme rainfall and flooding in Aceh needs to be investigated to enhance preparedness, mitigation, and adaptation strategies against its negative impacts. The datasets use in situ daily rainfall data from 5 BMKG stations in Aceh and the BSISO indices (BSISO1 and BSISO2) during the extended boreal summer (May–October) period 2001–2020, as well as flood event data in Aceh from 2008–2020. The results of this study show that rainfall in Aceh province is influenced by BSISO variability and has the potential to increase extreme rainfall and even cause flooding in some areas in Aceh, depending on the propagation path of BSISO. The frequency of extreme rainfall in Aceh during BSISO is identified using daily rainfall beyond the 95th percentile in each BSISO phase, which increases the probability of extreme rainfall in Aceh by around 20–100% during phases 1-3 in both BSISO1 and BSISO2. During BSISO1, the probability of flooding in phases 1-3 increased by up to 90%, and BSISO2 also increased the probability of flooding in phases 1-4 by up to 72%.
The Needs of Public Health Mitigation as The Impact of Earthquake Disasters in North Sulawesi Region, Indonesia Lamonge, Annastasia S. Lamonge; Polii, Grace B; Laka, Angela A. M. L; Simanjuntak, Andrean V. H.; Tangkulung, Glatio G; Timbuleng, Jesicca V. D; Anggriani, Theresia; Lewi Ristiyono
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19452

Abstract

North Sulawesi is located on a megathrust system and is very vulnerable to destructive earthquake events. Therefore, disaster mitigation from a health perspective must be carried out. Good knowledge will shape a positive attitude as a response that will determine actions in providing effective and optimal health services during a disaster. However, so far, the level of knowledge, attitudes, and actions of doctors in community health centers in North Sulawesi in facing disasters has never been evaluated, so the readiness of doctors in community health centers in facing disasters is still not well understood. One of the effects after a disaster is kidney failure (CKD) due to the lack of fluids needed by the body, making it one of the unavoidable effects of a disaster. Chronic Kidney Disease (CKD) is one of the diseases whose number and prevalence are significant both globally, nationally, and locally in North Sulawesi. The purpose of this research is to: 1) explore the perceptions and experiences of the community regarding the risk factors for CKD, 2) develop and test the effectiveness of a disaster-based education program in increasing community knowledge about CKD prevention. The design used is a multistage mixed method. The research began with the collection of qualitative data through in-depth interviews, followed by the development of an educational program and the experimental testing of the educational program. This research was conducted in Kuwil Village, North Minahasa Regency. A total of 15 participants were involved in the interviews and 38 participants in the experimental phase. Qualitative data is analyzed thematically, while quantitative data is analyzed descriptively through comparison. The results of the qualitative analysis yielded 2 themes. The first theme is the disparity in public knowledge about CKD, and the second theme is the public's efficacy regarding the prevention and impact of CKD. The analysis results using the paired t-test obtained a p-value of 0.000, which means that the disaster-based education program is effective in increasing public knowledge about CKD and its prevention. Having sufficient knowledge and adequate sources of information can help the community in making healthy lifestyle choices, especially in preventing the occurrence of CKD. Disaster-based education programs can be one of the approaches that community health centers can take to improve public literacy regarding CKD prevention.
Analysis of Determining the Potential for Transit Oriented Development in the Setiabudi District Area, South Jakarta, Indonesia Taki, Herika Muhamad; Bethany Jaffa Rani; Muhammad Dimas Elvin Putra
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19539

Abstract

Crucial research into Transit Oriented Development (TOD) in the Setiabudi District of South Jakarta highlights its significance as a burgeoning business center. This study examines the TOD framework, which integrates high-density development with transportation systems to foster an efficient urban environment. Emphasizing pedestrian-friendly spaces and diverse land uses, the research employs a literature review method to outline the criteria and principles of TOD, referencing the ITDP TOD Standard 2017. Additionally, the analysis leverages data from other scholarly articles to assess the potential for TOD in Setiabudi, focusing on radius and distance analyses around key transit hubs using Google Maps and Google Earth. Stations such as LRT Dukuh Atas, LRT Setiabudi, and Bendungan Hilir MRT demonstrate high potential for TOD, while MRT Setiabudi Astra and LRT Kuningan Station show moderate potential. Conversely, Rasuna Said LRT Station exhibits low potential for TOD. The implementation of TOD at high-potential stations could yield significant positive impacts, while MRT Setiabudi Astra and LRT Kuningan Stations present opportunities for enhancement. We find that Rasuna Said LRT Station requires further attention to increase its future potential.
Identifying the influence of El Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) Phenomena on Rainfall in The Aceh Region, Indonesia Jannah, Miftahul; Ismail, Nazli; Asyqari, Amir; Indahsari, Fitriana N.; Abdullah, Faisal
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19582

Abstract

The interaction process between the atmosphere and the ocean that occurs in the Pacific Ocean and the Indian Ocean has a major impact on climate and weather conditions in Indonesia. The phenomenon that arises due to this interaction is known as El Nino - Southern Oscillation (ENSO). In addition to ENSO, other mechanisms also impact weather and climate change in Indonesia, including the Indian Ocean Dipole (IOD). This study aimed to analyze the effect of ENSO and IOD on rainfall in the Aceh region. The data used were CHIRPS rainfall data with the locations of four meteorological stations and one climatology station in Aceh, IOD index data and ENSO index data. Data processing in this study was carried out using Grid Analysis and Display System (GrADS) software and Spreadsheet for CHIRPS rainfall data, followed by processing ENSO index data and IOD index using Spreadsheet software. The analysis showed that the ENSO phenomenon has a longer occurrence than the IOD phenomenon. ENSO has a greater influence on rainfall in the Aceh region than IOD, especially La Nina, which has a weak to moderate correlation. Negative IOD and El Nino phenomena influence several observation points, but some stations do not show a correlation between rainfall and the index. The positive IOD phenomenon is strongly negatively correlated with rainfall at the observation station, which shows that positive IOD does not influence the Aceh region.
Mapping of Basin Substrate and Vulnerability Index of Shallow Waters of Combol and Citlim Island, Moro District, Karimun Regency, Riau Islands Province, Indonesia Aunurrahman; Hanifa, Irfan; Setiyaningsih
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.19951

Abstract

Mapping basin substrates and vulnerability indexes in shallow waters are crucial for understanding the ecological health and resilience of marine ecosystems. Given the increasing threats from climate change and human activities, this research provides essential insights for effectively managing and conserving these vital coastal environments. Our study discusses mapping the bottom substrate and the vulnerability index of shallow waters in the Combol and Citlim Island clusters, Moro District, Karimun Regency, Riau Islands Province. Shallow waters have rich ecosystems, including coral reefs and seagrass beds, which function as fish habitats and coastal protection. However, these ecosystems are vulnerable to climate change and pollution disturbances. Using the water column correction method, this study used Sentinel-2A multispectral satellite imagery to map the shallow water bottom habitat. The analysis showed that open substrates and dead corals dominated the habitat, with an area of ​​± 766.8 Ha and ± 682.5 Ha, respectively. The vulnerability index revealed that a total area of approximately 393 ha fell into the moderate vulnerability category. Our mapping result is essential for understanding ecosystem dynamics and formulating appropriate conservation strategies. We anticipate that these findings will offer valuable insights for managing aquatic resources and safeguarding coastal ecosystems in the region.
Management of Acid Rock Drainage Based on Geochemical Characterisation of Waste Rock Material, Study Case: Gold Mining With High Sulfidation Ephithermal (HS) Deposits Fakhrur Razi; Titah, Harmin S.
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 04 (2024): JGEET Vol 09 No 04 : December (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.04.20319

Abstract

Acid rock drainage (ARD) or Acid mine drainage (AMD) is significant challenge for the global gold mining industry, necessitating specialized treatment to prevent its occurrence. Rambajoring is deposits located at the North Sumatra Martabe gold mine, the mine is an epithermal deposit of a high sulfidation system. A crucial step in management of AMD is identifying rocks that potentially produced acid water or not if contact with water and oxygen. Static testing provides an indication of the potential acidity that can be generated by rock samples based on their composition. These rocks are classified into Potentially Acid Forming (PAF) or Non-Acid Forming (NAF). Laboratory analyses including Acid Base Accounting (ABA), Net Acid Generating (NAG) Test, and paste pH, identified all lithology with uncertain category. This uncertainty occurs impact of presence of significant non-pyritic or non-acid forming sulfide sulphur mineral in this case of Alunite (KAl3SO2OH6) minerals. Containing these minerals will result in erroneously high estimations of total sulphur (S) and increasing the calculated of NAPP. Long term implication non-pyritic sulfide may oxidize slowly, leading to delayed acid generation not reflected in static NAPP calculation. Supplementary test to validation static test result and analysis geochemical behaviour of rocks using kinetic testing with Field Column Leach Test (FCLT) method. FDCLT test confirm in eight months period monitoring, all lithology have a lag time before significant acidity is produced and classified as PAF rocks. The leaching properties of material had highest concentrations of iron (Fe), cooper (Cu) and zinc (Zn). Keyword : AMD, ABA, Geochemical Characteristics, NAF, PAF, Kinetic Test, Static Test

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