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Jurnal Geografi
Published by Universitas Negeri Medan
ISSN : 20858167     EISSN : 25497057     DOI : -
Core Subject : Science, Education, Social,
Earth & Planetary Sciences Education Environmental Science Social Sciences Other
Jurnal Geografi is published as a scientific communication media in the field of Geography Education in particular and Geography in general, as well as other related fields, for faculty members, alumni of Geography Education both from the Faculty of Social Sciences of State University of Medan and alumni of geography from other universities. As a medium of scientific communication, this magazine serves to provide a means of publication for the field of development of concepts and theoretical studies, including actual issues that are relevant in the field of Geography Education in particular and Geography in general. The content of the writing does not have to be in line with the editorial policy. The magazine is published twice a year in February and August and is distributed as a publication for geography education, geography or other related fields. Circulation for the limited circle and enthusiasts can get it by changing the cost of printing and postage.
Arjuna Subject : Ilmu Sosial - Geografi, Perencanaan dan Pengembangan
Articles 324 Documents
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Detection Of The Thermal Front Using The Cayula-Cornillon Alghorithm: A Case Study Of The State Fisheries Management Area 713, Indonesia Muhammad Yusuf; Maddatuang Maddatuang; Abdul Malik; Irwansyah Sukri; Andi Andariana
JURNAL GEOGRAFI Vol 16, No 2 (2024): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v16i2.42555

Abstract

Thermal fronts are pivotal in shaping the marine ecosystem, influencing the presence and distribution of marine species. This study delves into the fluctuating patterns of thermal fronts in Indonesian waters, specifically focusing on the State Fisheries Management Area of the Republic of Indonesia, known as WPPNRI, 713. We identified the distribution and frequency of thermal fronts across different monsoon seasons. Utilizing the extended Cayula Cornillon Algorithm – Single Image Edge Detection (CCA-SIED), we deploy a precise methodology for detecting these fronts, relying on sea surface temperature (SST) gradients to identify specific periods and regions. Our analysis encompasses extensive satellite data collected from Moderate Resolution Imaging Spectroradiometer (MODIS) level 3. Our findings unveil distinct seasonal variations, with a decrease in thermal fronts during the west monsoon and a surge during the east monsoon. Moreover, we identify regional disparities, with denser thermal fronts observed in the southern and middle regions compared to the northern areas. Furthermore, our study underscores the critical need to integrate oceanographic data with fisheries management strategies to address the impacts of climate variability on marine resources. The observed relationships between thermal fronts, nutrient distribution, and fish migration emphasize the necessity for ongoing, localized monitoring to develop adaptive management solutions. This research marks a significant step in characterizing thermal fronts in WPPNRI 713, laying the groundwork for future investigations into other ecologically significant fronts, including those related to chlorophyll, salinity, and nutrients, thereby enhancing our understanding of marine ecosystem dynamics.Keywords: Cayula Cornillon; Fishing Zone; Marine Ecosystem; Sea Surface Temperature; Thermal Fronts
Assessment of Landslide Vulnerability in Urban Areas Using GIS and Remote Sensing: A Study in Ambon City Mohammad Amin Lasaiba; Edward Gland Tetelepta; Paisal Ansiska
JURNAL GEOGRAFI Vol 16, No 1 (2024): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v16i1.41978

Abstract

Slope stability and land movements, commonly referred to as landslides, are natural hazards that involve the shifting of materials like soil, rock, and debris, primarily caused by the force of gravity. This research utilized both qualitative and quantitative approaches, focusing on spatial analysis by examining primary and secondary data derived from satellite imagery, observations, and pertinent institutions. Processing of the collected data using specialized software like Global Mapper 20, ArcGIS 10.8.1, and ER Mapper 8.1. The findings of this investigation disclosed that a significant portion of Ambon City, roughly 51.63% of its area, exhibited high susceptibility to landslides. Conversely, only about 16.26% of the total area demonstrated very low or low vulnerability. Similar trends were observed in urbanized regions, where the majority, around 39.01%, were classified as highly vulnerable (Z-4). In contrast, approximately 35.09% showed very low vulnerability (Z-1), and 11.89% depicted low vulnerability (Z-2). The study's findings clearly highlight a critical situation in Ambon City, where a substantial 89% of its territory, characterized by mountainous landscapes, is experiencing a markedly increased frequency of landslides. Given these concerning insights, it is absolutely essential for government authorities to engage in rigorous spatial planning. This should involve redirecting development efforts towards areas identified as safer, away from high-risk zones. Furthermore, the government must enforce and adhere to policies that not only mitigate landslide risks but also promote sustainable development, ensuring the long-term safety and resilience of Ambon City against such natural disasters.Keywords: Mapping, Landslide, Vulnerability, Build Area
Random Forests Algorithm for Two Levels of Coral Reef Ecosystem Mapping Using Planetscope Image in Malalayang Beach, Manado Cera, Fela Pritian; Danoedoro, Projo; Wicaksono, Pramaditya; Yasir, Moh
JURNAL GEOGRAFI Vol. 15 No. 2 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i2.30795

Abstract

The coral reef ecosystem has a significant physical and biological function and is also one of the coastal ecosystem components apart from the seagrass and mangrove ecosystem. Besides their ecological function, the coral reef also has an economic function. The condition of the coral reef ecosystem in Malalayang Beach has been changing for years. The utilization of remote sensing images can monitor current conditions. This research aims to map the coral reef ecosystem mapping in Malalayang Beach, Manado and conduct a test for the accuracy of coral reef ecosystem mapping using field survey data as a classification and validation sample. PlanetScope multispectral image has four channels to detect underwater objects: red, green, blue and near infrared. PlanetScope level 3B image for the research has a surface reflectance value for its pixel. The image processing stages of this research consist of sunglint correction, water column correction, and then continue to classify the coral reef ecosystem using random forests algorithm. Classification and accuracy training sample data were obtained using the photo transect technique. The sunglint correction regression equation is between 0.27 “ 0.38. The coefficient of attenuation ratio in B1 is 0.927797938, B2 is 0.168841585, and B3 is 0.29033029. This value then becomes the input for the Lyzenga formula. The classification accuracy for level one using random forests is 72,54%, and the accuracy for level two mapping is 37,61%.Keywords: Coral Reef Ecosystem, Planetscope, Random Forests
Land-Cover Change Detection in Batur Catchment Area Using Remote Sensing Febrianti, Ni Kadek Oki; Danoedoro, Projo; Widayani, Prima
JURNAL GEOGRAFI Vol. 15 No. 1 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i1.32670

Abstract

Land cover information is an essential aspect in the planning and management of earth modeling and understanding. Land cover changes impact the physical and social environment, such as hydrological conditions and ecological systems. This study aimed to identify spatial differences in the land cover of the Batur catchment area from 2015-2021 by using a remote sensing approach to describe the existing land-cover site and to detect its changes. The methods used in this study are a combination of the vegetation index and a supervised classification maximum likelihood algorithm with Landsat 8 OLI/TIRS in 2015 and 2021. Furthermore, the Change Detection Feature, identified from two image periods in 2015-2021 and processed, is used to detect changes in land cover. The accuracy assessment utilized QuickBird imagery recorded in 2015; field survey data were taken in 2021. The results showed that between 2015 to 2021, built-up area, bare land, shrubs, and lake have increased by 102,66% (306,01 ha), 27,95% (452,25 ha), 15,20% (215,72 ha) and 4,05 % (62,73 ha) while dryland forest and dry-dry-field have decreased by -25,84% (-606,29 ha) and -14.59% (-430,42 ha), respectively. The overall accuracy of the multispectral classification results in 2015 and 2021 was 82,63% and 89,57%.Keywords: Land-Cover Change; Batur; Catchment Area; Remote Sensing 
Awareness of the Importance of Children's Education in the Small Island Fisherman Community (Case Study of Liukang Loe Island) Nismawati, Nismawati; Oruh, Shermina; Kamaruddin, Syamsu A.; Agustang, Andi; Wirda, Mona Adria
JURNAL GEOGRAFI Vol. 15 No. 1 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i1.34027

Abstract

Residents of small island villages are typically classified as low-educated. This study used Liukang Loe Island as a case study to learn the truth about children's education in small island settlements. This study aims to determine how the fishing community understands the importance of education and how to increase public awareness about children's education on Liukang Loe Island. This study, which uses a descriptive qualitative technique with research informants, focuses on the "Harapan" fishing group community on Liukang Loe Island. Information was gathered through observation, interviews, and documentation. The type of analysis that was carried out by qualitative through taxonomic analysis, drawing conclusions using the Miles and Hubberman model, as well as directions to increase public awareness about the importance of education through AHP. The findings demonstrated that the Liukang Loe Island fishing community prioritized children's education, as seen by the community's, particularly families', efforts to ensure that children's education was completed. This is reinforced by the family's commitment to earning a living and covering all the children's educational demands. The fishing communities support their children's ability to advance to the highest level possible. Although there are only elementary and junior high schools on Liukang Loe Island, with limited facilities and infrastructure, children's enthusiasm and motivation to attend school are high. This does not deter the fishermen's children from continuing their high school and graduate education outside the island to obtain a better education. There are two options for raising awareness about education in fishing communities: community training and empowerment programs through NGOs, local governments, and educational institutions; and educational assistance programs in the form of notable scholarships for fishing communities in small islands.Keywords: Community Awareness, Fisherman, Education, Small Island 
Monitoring Aerosol Optical Depth for Air Quality Through Himawari-8 in Urban Area West Java Province Indonesia Ridwana, Riki; Himayah, Shafira; Rabbi, Muh Fiqri Abdi; Ahmad Lugina, Izma Maulana; Al Kautsar, Azhari; Sakti, Anjar Dimara
JURNAL GEOGRAFI Vol. 15 No. 2 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i2.36866

Abstract

Air quality is a crucial parameter in human life. One air quality indicator can be observed through Aerosol Optical Depth (AOD). If these substances are pollutants such as particulate matter, aerosols, and ozone, it is confident that air quality will deteriorate, threatening human health and causing climate change. AOD monitoring can be used as a basis for policymakers and related parties to maintain the stability of air quality in the atmosphere. Many ground observation stations monitor air quality by obtaining data on PM2.5 and PM10 aerosol particles. However, the number of ground stations is limited, resulting in incomplete data. Fortunately, remote sensing satellites have the advantage of covering large areas and providing continuous observations, with the ability to gather information on large-scale aerosol and obtain spatiotemporal distribution. Therefore, this research aims to obtain AOD through Himawari-8 and analyze the spatiotemporal air quality in urban areas of West Java based on AOD. The research methodology used in this study is descriptive analysis with an empirical research approach. Assisted by remote sensing technology and Geographic Information Systems, this research generates AOD data extraction that can be obtained from the new generation satellite of Himawari-8. The distribution of AOD levels and spatiotemporal monitoring in urban areas of West Java is very dynamic depending on anthropogenic activity in a particular area and time. Keywords: Aerosol Optical Depth (AOD), Air Quality, Himawari-8
Analysis of the Influence of Part-Time Work on Student Learning Activities Arif, Muhammad; Rosni, Rosni; Nurman, Ali; Z, Soedirman; Cimita, Ade
JURNAL GEOGRAFI Vol. 15 No. 1 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i1.36993

Abstract

Education is one of the necessities of life that every individual must have. One level of education is a college education. In tertiary institutions' learning process, students are inseparable from financial needs for learning needs and living standards. This need forces students to do part-time jobs. Part-time jobs are growing from time to time. Part-time work has both positive and negative effects on student development in the world of work. This study aims to analyze part-time jobs for students of the 2017 Geography Education Department, their relation to learning activities, and the factors that motivate students to work part-time. This study uses a quantitative approach with simple analytical techniques. The population in this study were all students of the 2017 class of the Geography Education Department, with a sample of 20 students. Data collection techniques using a questionnaire. The study results show a significant effect of part-time work and learning activities with a substantial value of 0.037 <0.05. The main factor for students is working part-time because of the financial need for college needs and the standard of living. Part-time jobs done by students are online motorcycle taxi drivers, shopkeepers, salespeople, private tutors, and web programmers.Keywords: Part-Time, Student, Geography Education, Learning Activities
Spatiotemporal Analysis of Land Surface Temperature in Tainan City by using Landsat 5 & Landsat 8 Rahmad, Riki; Gong, Zhiyu; Yang, Zhaohui; Guo‬‬, Meijun
JURNAL GEOGRAFI Vol. 15 No. 1 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i1.37183

Abstract

Taiwan is a subtropic-tropic island with densely populated in the coastal plains surrounding its mountains. In recent years, due to global warming and the urban heat island effect, the surface temperature has continued to rise, and the seasonal temperature changes are also very different. Increased surface temperatures, particularly in cities, are a major environmental issue that intensifies urban heat islands (UHIs). Decadal time-series analysis has historically relied on meteorological data. Due to the limited availability of remote sensing technology, decadal analysis of land surface temperature has been a serious concern. However, according to advanced technologies in remote sensing methods and sophisticated GIS software, Land Surface Temperature (LST) now can be estimated using thermal bands. The objective of this study is to monitor the spatiotemporal changes of the land surface temperature using Landsat 5 and Landsat 8. Tainan city, which is a highly developed city in southern Taiwan, is selected as the research area. The changes in the land surface temperature are assessed between the years 2007 and 2021. It simply requires applying a set of equations through a raster image calculator using ArcGIS. The LST of any Landsat satellite image can be retrieved by following steps: 1) Top of Atmospheric Spectral Radiance; 2) Conversion of Radiance to At-Sensor Temperature; 3) Calculating NDVI; 4) Calculating the Proportion of Vegetation; 5) Determination of ground emissivity, and 6) Calculating Land Surface Temperature. Near Infra-red are used to obtain Normalized Different Vegetation Index (NDVI). The results show that the average surface temperature of Tainan City increased slightly by 1.1 0C. The most significant increase in temperature was in the northern region of Tainan City which was the agricultural area that was in the post-harvest period.Keywords: Land Surface Temperature (LST), Landsat 5, Landsat 8, Tainan City, GIS
Analysis Of Geography Planning and Village Funds to Improve Development Program Zulfida, Ida; Situmeang, Mahyudin; Reis, Cristovao
JURNAL GEOGRAFI Vol. 15 No. 1 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i1.38862

Abstract

Geography planning is an essential element in the creation of a plan. Planners develop a method by analyzing data and identifying goals for the community or the development project. This study aims to analyze how planners or governments analyze geography planning and village funds to improve development programs. This research type is quantitative”data collection techniques using a closed questionnaire with a Likert scale model and interviews. The population and sample of the study were 47 people. The analysis technique was carried out by processing data collected from respondents, grouping data based on the type of respondent, making tabulations, and carrying out statistical test calculations. The results of this study found that the Village is a geographical manifestation caused by socio-economic, political, and cultural physiographical elements. Geographical planning analysis and village funds are intended for villages with each village planning village development needs. Support for geographic planning analysis and village funds can be seen from the achievement of policy aspects such as agenda setting, policy formulation, policy adoption, policy implementation, and policy evaluation in villages with a low relationship with effectiveness. From development programs. Public services to the point of development programs have an intense relationship, and the accountability dimension is classified as moderate. Productivity dimensions, service quality responsiveness, and responsibility for the development program's effectiveness. The policy on the simultaneous use of village funds and public services on the effectiveness of development programs has a strong relationship of 72.25. However, this study did not examine a low correlation of 0.27.36%.Keywords: Village, Policy, Public, Geography, Planning
Explaining the Role of National Participant Geospatial Information System in the Effectiveness of Urban Services with a New Approach Fallah, Mahdi; Karami, Tajaddin; Kamanroudi, Mousa
JURNAL GEOGRAFI Vol. 15 No. 1 (2023): JURNAL GEOGRAFI
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jg.v15i1.38992

Abstract

This article is written with a new approach of an integrated system, under the title of National Participatory Geographical Information System, which is introduced. This approach originated from people's thoughts in dealing with national and transnational issues and issues in the form of participation, which has challenged human evaluations and needs to educate everyone. Now, researchers, stakeholders, and government officials' primary concern are finding ways to increase public participation in these programs. Especially digital cities have been made available in line with all the angles of virtual planning. In the coming years, how to deal with technology in the framework of a coordinated information system dependent on space-time-place is very important. After platform creation, it must be managed and can be used and developed within the requirements management framework. A case study was chosen to prove the applicability of this study. The problem of the wrong cycle is a general process with the aim of its educational structural correctionKeywords: New Geography, Education NPGIS, Virtual Cities, Next Generation

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