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Tunas Geografi
Published by Universitas Negeri Medan
ISSN : 2301606X     EISSN : 26229528     DOI : https://doi.org/10.24114/tgeo
Core Subject : Science, Education, Social,
Astronomy Earth & Planetary Sciences Education Environmental Science Other
The main focus of this journal is Geography Learning, Social and Human Geography, Regional Development, Geographic Information Systems, Remote Sensing, Disaster and Mitigation, Geology and Geomorphology, Oceanography and Coastal. This journal target is teachers, lecturers, graduates, and practitioners in the field of geography. As a scientific communication medium, this magazine serves to provide a publication tool for the development of concepts and theoretical studies, and actual issues relevant in the field of Geography. This journal is published twice a year in July and December and is circulated as a publication material for education in geography, geography, or other relevant fields.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 188 Documents
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Dynamics of Urban Heat Island and NO2 Gas During the Covid-19 Pandemic Risnayah, Siti; Mudhalifana, Waode Sitti; Restele, La Ode
Tunas Geografi Vol 12, No 2 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i2.49303

Abstract

To know the COVID-19 pandemic’s impact on the environment, an analysis of Urban Heat Island and pollutant gas was carried out. From March to June 2020, the Indonesian government implemented the Large-Scale Social Restrictions (PSBB) policy, requiring people to limit activities in public places. The data used are Land Surface Temperature (LST) from the Terra MODIS and Nitrogen Dioxide (NO2) concentration from the TROPOMI sensor. The data is processed using the Google Earth Engine to produce comparative values before the PSBB implementation (2019), during (2020), and after (2021-2022). The LST will be derived into Surface Urban Heat Island (SUHI) to compare climate conditions in urban (Kendari) and rural areas (Ranomeeto, Lalonggasumeeto, North Moramo). The results show that reducing community activities during the pandemic was not able to reduce LST but succeeded in inhibiting the increase rate. The LST trend is more affected by rainfall variables where higher rainfall causes lower LST and vice versa. The SUHI value shows a downward trend, meaning that the Urban Heat Island effect has been inhibited. The most significant impact of PSBB was a 25.9% reduction in NO2 concentration. These results prove that the COVID-19 pandemic has successfully restored environmental health constantly exposed to air pollution. Keywords: COVID-19, Urban Heat Island, NO2, PSBB, Land Surface Temperature
Water Quality of Unconfined Aquifer in Universitas Negeri Malang Following the Drinking Water Quality Standard of Indonesian Ministry of Health Utaya, Sugeng; Taryana, Didik; Mashitoh, Ferryati; Arinta, Dicky; Prasad, Ravinesh Rohit
Tunas Geografi Vol 13, No 1 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i1.53219

Abstract

Abstract                                                             The quality of groundwater is naturally determined by water-bearing rock characteristics. However, the progression of civilian activities also negatively affects the groundwater quality. Therefore, this study aims to assess groundwater's physical, chemical, and biological characteristics in Indonesia's Universitas Negeri Malang (UM) campus area and evaluate its compliance with drinking water quality standards, particularly the Class A standard. A comparative descriptive strategy was utilized in the study by involving groundwater in the campus area of UM. The focus of the research is water quality in unconfined aquifers. Through purposive sampling, 12 wells were selected to ensure appropriate spatial dispersion. Water samples were collected in sample bottles and tested for physical, biological, and chemical properties. The Perum Jasa Tirta I Malang carried out these water quality tests. Water quality data were analyzed qualitatively, descriptively, and comparatively. This study concludes that (1) the groundwater on the UM campus generally meets the physical criteria for drinking water quality standards; (2) the chemical quality of the groundwater on the UM campus still satisfies the drinking water quality standards; and (3) biologically, the free groundwater on the UM campus fails to meet drinking water quality standards. The novelty of this research is that the biggest threat to the quality of free groundwater in the campus area is bacterial contamination from sanitation activities. Accordingly, it is recommended that groundwater is boiled before being utilized for drinking water purposes to neutralize the E. coli bacteria present in all well water samples.Keywords: Water Quality of Unconfined Aquifer; The Drinking Water; Quality Standard
Integration of Remote Sensing and GIS Technologies for Blue Carbon Ecosystem Monitoring in Lakkang Island, Makassar City Nyompa, Sukri; Haris, Haris; Amalul, Muhammad Arib Musba; Albatuul, Fatimah
Tunas Geografi Vol 12, No 2 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i2.50719

Abstract

Blue carbon ecosystem has a very important role in maintaining the quality of environments. Form of monitoring processes is needed to be able to provide direction for decision making, related to its management planning. Remote sensing technologies that is integrated with Geographic Information Systems (GIS) is a form of monitoring methods that can be carried out more quickly, easily and accurately. Lakkang Island in Makassar City has a blue carbon ecosystem in form of mangroves, that have very important role in absorbing carbon emissions. This research was conducted with the aim of integrating remote sensing and GIS technologies in monitoring blue carbon ecosystems.  Monitoring processes focused on distribution and extentions of the blue carbon ecosystem which is carried out through a random forest algorithm. Monitoring of the physical condition like density levels of the blue carbon ecosystem is carried trough the NDVI analysis. The results showed that the distribution of the blue carbon ecosystem on Lakkang Island tends to follow the main flow of the Tallo River, with an area of 58.29 hectare. Physical conditions of the blue carbon ecosystem is dominated by dense mangroves that reaching 46% from total area of the ecosystem.Keywords: Blue Carbon, Ecosystem Monitoring, Lakkang
Analysis of Microfaces and Depositional Environment of Limestone in North Isimu Area, Gorontaolo Regency Robot, Ladya Cheryl; Permana, Aang Panji; Akase, Noviar
Tunas Geografi Vol 13, No 1 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i1.41981

Abstract

The geological conditions in the northern part of Lake Limboto vary greatly from the constituent rocks to the working geological structures. Lithological variations consist of volcanic and plutonic rocks to limestone. The area where limestone is widely distributed is in the North Isimu Region, Gorontalo Regency. This research aims to analyze the geological conditions, microfacies and depositional environment of limestone in the North Isimu Region, Gorontalo Regency. The research methods used to achieve this goal consist of field surveys and petrographic laboratory analysis. Field surveys include taking rock samples, taking coordinate points, taking elevation, geomorphological observations, observing geological structures and taking field documentation. Meanwhile, petrographic analysis of rocks uses a polarizing microscope as a tool to follow up megascopic observations. Observation of rock incisions under a microscope using cross nicol and parallel nicol. Based on the results and discussion, it shows that the geomorphology of the research area includes structural hills with sub-parallel river flow patterns. The geological structure of the research area is a descending fault trending northwest-southeast. The research area is divided into four facies, namely foraminifera wackestone, crystalline limestone, foraminifera algae packstone and coralline floatstone. Standard microfacies (SMF) in the North Isimu Region consists of three SMF namely SMF-3, SMF-4 and SMF-5 with two limestone depositional environmental zones namely toe of slope (FZ-3) and slope (FZ-4). FZ-3 was deposited at the end of the foreslope zone and FZ-4 was deposited seaward of the foreslope from the edge of the carbonate debris platform.Keywords: Limestone; Microfacies; Depositional Environment; North Isimu
Carrying Capacity of Education Facilities in Banawa Sub-District, Central Sulawesi Province Ibnu, Moh; Saputra, Iwan Alim; Maliki, Rendra Zainal; Budianta, Aziz; Ali, Zaenudin
Tunas Geografi Vol 12, No 2 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i2.50934

Abstract

Education is a basic human need with the aim of achieving high productivity. The results of field surveys in Banawa Regency show that the availability of educational facilities to meet educational needs, based on population projections in 2044, has not yet reached the optimal level. Therefore, careful planning is needed in improving and placing educational facilities. This research aims to evaluate the availability of educational facilities according to the needs of the population, by applying an analysis of the carrying capacity of facilities based on public service standards regulated in SNI 03-1733-2004 concerning urban area planning. The methodology used involves analysis of the carrying capacity of facilities to determine the population's need for educational facilities, population projections using geometric formulas to calculate the expected number of residents in the projected year, as well as spatial analysis using Geographic Information System (GIS) software to assess the distribution of facilities. education in Banawa District. The findings from this research indicate that currently there are 82 units of educational facilities in Banawa District, consisting of 39 PAUD units, 31 elementary school units, 8 junior high school units, and 4 high school units. However, additional educational facilities are needed by 7 PAUD units, 5 elementary school units, 4 junior high school units and 8 high school units in Banawa District.Keywords: Education, Facilities, Carrying Capacity, Banawa
Percentage of Live Coral Cover in The Regional Water Conservation Area of the Sawo – Lahewa Water Tourism Park, North Nias District Siregar, Zufriwandi; Barus, Ternala Alexander; Aththorick, T Alief
Tunas Geografi Vol 13, No 1 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i1.55178

Abstract

Coral reefs are vital ecosystems facing serious threats due to climate change and human activities. This research aims to evaluate the condition of live coral cover in the Sawo-Lahewa Aquatic Tourism Park (TWP) Regional Marine Conservation Area (KKPD), North Nias Regency, as an important step in conservation and sustainable management efforts. Data was collected at 8 research stations using the Underwater Photo Transect (UPT) method. The research results show that the condition of coral reefs in this area is in the damaged to moderate category, with the percentage of live coral cover ranging between 12.33-45.37% and an average of 26.65%. The highest percentage of coral cover was found on Sarangbaung Island (45.37%) in the medium category, followed by Makora Island (42.13%), Gita Island (35.35%), and Lafau Island (31.07%). Meanwhile, locations with the lowest cover in the damaged category include Gosobaohi_01 Island (18.25%), Gosobaohi_02 Island (15.60%), Sifahandro Sea Waters (13.13%), and Bengkuang Bay Waters (12.33%). This research also looks at the abundance of coral juveniles, coral fish, and megabenthos to provide a broad picture of the health of the coral reef ecosystem. The results of this research can become a scientific basis for developing more effective management strategies. Apart from that, it is also a form of supporting conservation efforts, helping restore damaged ecosystems, and increasing the resilience of coral reefs to future environmental threats.Keywords:  Coral Reefs, Regional Marine Conservation Area, North Nias
Neutralization of Galena Acid Mine Water Using CaO and CaCO₃ at PT Berkat Bhinneka Perkasa Zulhaji Sam, Taufik; Mukhlis, Mukhlis; Aththorick, T Alief; Harahap, Hamidah; Muzambiq, Said
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.58198

Abstract

The mining system implemented at PT. Berkat Bhinneka Perkasa is an underground mining system. The results from mining the metal mineral commodity black lead ore (PbS/Galena) are helpful in the battery industry, color pigments, ammunition, cable coatings, radiation protection, solder, and other materials that use Pb and Zn as basic ingredients. This research examines the neutralization of acid mine drainage using Tohor Lime (CaO) and Calcium Carbonate Lime (CaCO3). The methods used are survey and experimental techniques, where the survey involves field observations to determine observation points and collect data. In contrast, the experimental method includes laboratory analysis followed by data analysis. This research shows that acid mine wastewater with pH 4.74 and 240.20 ppm Fe²⁺ was effectively treated using quicklime, calcium carbonate, TKKS, and rice husk biochar. These ameliorants significantly increased pH and met the river water quality standards per Government Regulation 22 of 2021. Although active ferrous levels also increased, the effect was not statistically significant. However, excessive ferrous content can harm agricultural soils and plants, potentially causing iron toxicity.
Analysis of Coral Reef Cover in Nias Regency, North Sumatra Simaremare, Elisabet Rosevenny; Wahyuningsih, Hesti; Aththorick, T Alief
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.59317

Abstract

Marine and fisheries resources in the waters of Nias Regency are one of the sectors that drive the community's economy, especially in coastal areas. Coral reefs are one of the marine ecosystems in Nias Regency that have high ecological and economic value. This research aims to evaluate the environmental conditions of coral reefs in the Nias Regency Water Area, especially in the seascape tourism zone around the waters of Onolimbu Island and Musi Island as research locations. The research was conducted from March to May 2023 in the coastal waters of Nias Regency to collect ecological and socio-economic data. Coral cover analysis was carried out using underwater photo methods and classified based on condition categories set by the Ministry of Environment. The condition of coral reefs at this research location is in the damaged to moderate category (23.47-45.13%) with an average abundance of 31.54% and is included in the medium category. The percentage of coral reef life form types consists of Dead Coral Algae (DCA) (34.86%), Hard Coral (31.81%), Sands (15.73%), Recent Dead Coral (5.84%), and the rest are Rubble, Other Biota and Rock. Coral Reefs, Coral Cover, Nias Regency
Population Corner: Advancing Digital-Based Literacy Through The School Literacy Movement at SMA Negeri 1 Stabat Salmayda, Salmayda; Utomo, Dwiyono Hari; Mutia, Tuti; Handoyo, Budi; Suharto, Yusuf
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.62097

Abstract

This study examines the Population Corner initiative at SMA Negeri 1 Stabat, intending to improve digital literacy through the School Literacy Movement (SLM). The main objectives are to provide an overview of the Population Corner program at SMA Negeri 1 Stabat as a form of digital-based SLM implementation and to assess students' literacy levels in population content using a qualitative approach to guide the development of a more effective Population Corner. The results showed that although the initiative has successfully integrated digital tools such as QR codes and cloud-based platforms to improve access to information, many students are not actively using these resources. Limitations of this study include the absence of structured management and a dedicated space for the Population Corner, which may affect its effectiveness. In addition, the study highlighted that many students were not fully engaged with the program, indicating the need for better strategies to encourage interest in population literacy activities. Recommendations for future improvements include increasing student engagement through dynamic activities, integrating interdisciplinary connections, providing geospatial resources, and improving the school's digital infrastructure to improve access to resources. Addressing these limitations and implementing the recommended strategies, the Population Corner initiative can increase literacy and awareness of critical population issues at the local and national levels.
Modeling of Carbon Emissions and Sequestration Due to Land Cover Changes in Makassar Using Geospatial Technology Nursaputra, Munajat; Fa'iq, Muhammad; Anila, Chaeria; Nasir, Anugrahandini; Larekeng, Siti Halimah; Rahmat, Syaeful
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.62576

Abstract

Land-use change significantly affects carbon emissions, particularly in rapidly growing cities such as Makassar. This study uses geospatial technology to analyze the impact of land cover changes on carbon emissions and sequestration in Makassar City from 2022 to 2041. The Rapid Carbon Stock Appraisal (RaCSA) method and the QUES-C feature of the LUMENS software were utilized to model land cover changes based on the Makassar City spatial planning scenario (RTRW). The results indicate that expanding residential areas and reducing green spaces, such as mangrove forests and agricultural land, have increased carbon emissions. However, carbon sequestration in certain areas, especially in the Tallo District and reclamation areas, has increased significantly due to the establishment of local protection zones. This study highlights the importance of spatial planning that supports the protection and restoration of green spaces to enhance carbon sequestration capacity and support sustainable development strategies in Makassar City.

Page 16 of 19 | Total Record : 188

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