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INDONESIA
Indonesian Journal of Geography
Published by Universitas Gadjah Mada
ISSN : 00249521     EISSN : 23549114     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Indonesian Journal of Geography ISSN 2354-9114 (online), ISSN 0024-9521 (print) is an international journal of Geography published by the Faculty of Geography, Universitas Gadjah Mada in collaboration with The Indonesian Geographers Association. Our scope of publications includes physical geography, human geography, regional planning and development, cartography, remote sensing, and geographic information system. IJG publishes its issues three times a year in April, August, and December.
Arjuna Subject : -
Articles 613 Documents
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Utilization of Satellite Imagery for Mapping the Distribution of Seagrass on Buhung Pitue Island Rosalina, Dwi; Arafat, Yasser; Wahda, A Nurtasya; Rombe, Katarina Hesty; Khasanah, Ruly Isfatul; Sofarini, Dini
Indonesian Journal of Geography Vol 56, No 1 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.82259

Abstract

Buhung Pitue Island has seagrass beds those which are spread almost evenly along its coast. Research using remote sensing technology in an effort to support seagrass conservation in Indonesia needs to be carried out. Spatial data is relatively easy to obtain because there are many types of images with various spatial resolutions. The image can be obtained on google earth. Analysis of the distribution of seagrass areas was obtained by digitizing on screen in ArcGIS software, namely in seagrass areas where the boundaries are known. Digitizing is conducted by enlarging the seagrass area in the downloaded image, performing radiometric and geometric corrections, and digitizing to create a shapefile (shp) storing the location, shape, and attributes of geographic features. The seagrass distribution area of Buhung Pitue Island was of 36.5 Ha in 2014 and was of 39.6 in 2021. The rate of change in area from 2014 to 2021 was of 0.085% (an increase of 3.1 ha). The distribution area of seagrass has increased due to natural factors and restrictions on human activities during the COVID-19 pandemic. In addition, another factor supporting the increase in seagrass distribution is the abundance of Enhalus acoroides seagrass species growing and spreading over long distances. The sea surface temperature was high, which was 30.37 °C, while the current speed was categorized as slow because it was around 0.01 m/s. Although the results are obtained from high-resolution imagery, an accuracy test still needs to be conducted.
Spatio-temporal Evolution of Coastal Sabkhas in Arid Rapid Urban Development Area of Kuwait Al-Hurban, Adeeba; Albanai, Jasem A
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.82508

Abstract

Sabkha is the Arabic term meaning "salt flat". It is usually used to describe coastal flat areas extending above the high tide level and which are evaporate-rich clastic sediments. In Kuwait, sabkhas exist along the southern and northern coastal areas. Previous studies did not discuss the chronological changes of the coastal sabkhas in Kuwait, especially the northern sabkhas, where the Government of the State of Kuwait plans urban expansion to the North to achieve Kuwait Vision 2035. This current study aims to detect the geomorphological, spatial, and temporal evolution of coastal sabkhas in Kuwait using remote sensing data and Geographic Information System (GIS) methods. Landsat satellite images were used to study the distribution and evolution of the sabkhas across Kuwait's coasts. The selected images from Landsat MSS 1985 (before the gulf war), Landsat ETM+ 2002 (after the war), and Landsat OLI 2022 (current form) have been classified using the IsoData unsupervised classification method that takes into account near and short infrared radiation. The classification accuracy was validated for 2022 images using the Kappa coefficient, where the value was 0.81. The results showed that sabkhas in Kuwait have changed geomorphologically; anthropogenic activities and urban expansion have certainly influenced this change to cope with socioeconomic demands.The area of the sabkhas shrank from 1,267 to 1,019 km2 (-17%). The results also showed that the southern sabkhas of Kuwait are declining significantly, from 207km2 in 1985 to 52km2 in 2022. The current study presents a methodology to study the spatio-temporal evolution of sabkhas in dry areas around the world, using spatial analysis and in the context of the rapid urban development that the world is witnessing. 
Contribution of Commuters and Transit Activities on The Road Transport Carbondioxides Emission in Surakarta Himawan, Widhi; Sajidan, Sajidan; Sunarto, Sunarto; Setyono, Prabang; Nancy, Natasha; Wijayanti, Sovia
Indonesian Journal of Geography Vol 56, No 2 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.83164

Abstract

Road transportation became a main contributor to the emissions of Surakarta City. The driving factor for these conditions is predicted to originate from massive commuting and transit activities. This research covered the administrative area of Surakarta City in July–August 2022. The aim of the research was to determine the impact of commuting and transit on carbon dioxide (CO2) emissions from Surakarta transportation and develop a spatial interpretation of the distribution of emissions. The emission estimation method uses a Tier 3 calculation approach using the Mobilev software. Estimation based on average daily traffic data for 24 hours as well as the character of the monitored path. The results of the study obtained an estimate of road transportation emissions for the City of Surakarta to reach 722795.3 tons of CO2 peryear. Commuter and transit activities contribute to 50.33% of total major road emissions or 133.77% of local vehicle emissions. Commuter and transit emissions in Surakarta City are dominated by private passenger cars (38.26%) and motorcycles (37.71%). Emission distribution shows a pattern of emission load that is greater on the city gate and transit lines than the central business district (CBD) area.
Analysis of Land subsidencein coastal and urban areas by using various techniques– Literature Review Sahu, Smruti Ranjan; Rawat, Kishan Singh
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.83675

Abstract

Over the past several decades, subsidence has emerged as a significant issue affecting urban, coastal, and mining areas worldwide. This phenomenon has been exacerbated by a decrease in groundwater resources, which has become a major problem on a global scale. Insufficient availability of surface water has led to excessive exploitation of the earth's groundwater system through unplanned processes. As a result, serious problems have arisen, including economic challenges, hazardous activities, and damage to the Earth's surface. One of the most significant and impactful consequences of excessive groundwater extraction is land subsidence. During a comprehensive literature review focusing on land displacement, 40 research papers were analyzed and discussed. These studies explored various techniques employed to monitor subsidence, such as synthetic aperture radar (SAR), interferometry synthetic aperture radar (InSAR), persistent scatterer interferometry synthetic aperture radar (PS-InSAR), and differential synthetic aperture radar (D-InSAR). Researchers have consistently found a strong correlation between the over extraction of underground fluids, such as water, oil, and gas, and land subsidence. One prominent cause of land subsidence identified by researchers is the over extraction of underground fluids. When excessive amounts of water, oil, or gas are extracted from underground reservoirs, the resulting voids and reduced pressure cause the overlying land to sink and compact. This process can have severe consequences for human settlements, infrastructure, and ecosystems in affected areas. The depletion of groundwater reserves, in particular, has become a pressing concern because of its vital role in supporting agricultural, industrial, and domestic water needs.Furthermore, the underground construction of tunnels has also been identified as a significant contributor to land subsidence. The excavation of tunnels creates voids and alters the natural balance of underground structures, leading to ground settlement and subsidence. This issue is particularly relevant in urban areas where extensive tunneling projects are undertaken to facilitate transportation, utilities, and infrastructure development. To monitor and assess land subsidence, various methods and processes are employed. SAR, InSAR, PS-InSAR, and D-InSAR techniques are valuable tools in this regard. SAR uses satellite-based radar systems to capture high-resolution images of the Earth's surface, enabling the detection of subtle changes over time. In contrast, InSAR employs two or more radar images to measure ground deformation by analyzing interference patterns. PS-InSAR focuses on persistent scatterers, which are specific targets that exhibit stable radar reflections over time, providing precise measurements of subsidence. D-InSAR combines two radar images acquired at different times to accurately calculate differential ground movements. By using advanced monitoring methods, scientists can assess the extent of subsidence and develop strategies to mitigate its negative impacts. It is crucial to adopt sustainable practices and ensure careful management of groundwater resources to effectively address this pressing issue.
Improving the Effectiveness of Disaster Mitigation in Wonogiri Regency, Indonesia Using House of Risk Method Setiawan, Eko; Pramana, Gufron Adhi
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.83856

Abstract

Wonogiri Regency, the Republic of Indonesia, is an area that has potential to be affected by various types of disasters. This study aims to identify the types of disaster potentials in the Wonogiri Regency and to provide recommendations for effective disaster mitigation strategies that can be effectively implemented by the Regional Disaster Management Agency (Badan Penanggulangan Bencana Daerah or BPBD in short) of the Wonogiri Regency during 2021-2026 time period by using the House of Risk (HoR) method. The study found that floods, landslides, strong winds, volcanic eruptions, earthquakes, tsunamis, forest and land fires, droughts, and extraordinary events are likely to take place in the regency. The implementation of the HoR phase 1 yields 19 disaster risk events and 19 disaster risk agents. The use of Pareto diagram to the disaster risk agents results in 8 dominant risk agents of disaster, namely “Unstable ground”; “The trees are too old and fragile”; “The trees are too dense”; Lack of water resources”; Heavy rain intensity”; “Struck by disaster materials”; “Epidemic of a disease”; and “The building construction is not strong”. The implementation of the HoR phase 2 produces 15 mitigation strategies along with their priority order in which the 5 mitigation strategies with the highest priority are “Working with related parties to reduce the potential of disasters”; “Conducting socialization and education of disasters”; “Establishing disaster-resilient villages”; “Mapping disaster-prone areas”; and “Training for disaster volunteers”. 
Analyzing Free Economic Zones in Uzbekistan for Sustainable Growth Ahn, Young-Jin; Juraev, Zuhriddin; Gu, Ji-Yeong
Indonesian Journal of Geography Vol 56, No 1 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.84351

Abstract

This study examines the economic geography of Uzbekistan's free economic zones, focusing on their current significance and future prospects. It examines the historical and theoretical foundations of these zones, focusing on their role in shaping and organizing them. The study looks at the status of the free economic zones and examines their contribution to key economic indicators such as gross domestic production, trade, labor and tourism. In addition, the study uncovers the challenges faced by the free economic zones and provides targeted recommendations to effectively address these issues. The findings not only contribute to the existing economic geography literature, but also serve as a valuable resource for policy makers, researchers and stakeholders interested in promoting economic growth and regional development through free economic zones. This study provides a comprehensive analysis and a theoretical basis for understanding free economic zones in Uzbekistan and offers a broader perspective for improving their performance and potential to ultimately promote sustainable economic development in the country and beyond.
Smart City Approaches to Public Spaces and Services during and after COVID-19: Case Studies in Four Capital Cities Rachmawati, Rini; Mei, Estuning Tyas Wulan; Haryono, Eko; Reinhart, Hilary; Ghiffari, Rizki Adriadi; Rohmah, Amandita Ainur; Saralah, Thas; Pradipa, Hanindha; Nurani, Idea Wening; Petre, Angelo Andi
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.84578

Abstract

COVID-19 pandemic was reported to modify people’s behaviour in using public spaces and accessing services. This fact has become a critical input related to future city development strategies, space arrangements, and the implementation of smart city. Therefore, this study aims to 1) Identify efforts in several cities during COVID-19 pandemic, specifically concerning the use of public spaces and services, and 2) Compile the outlines of future urban planning strategies after the pandemic. The aspects related to the use of Information and Communication Technology (ICT), space arrangement, and urban environment are discussed. The analysis is based on case studies in four capital cities, namely Jakarta, Paris, Bucharest, and Canberra. Furthermore, field observations and in-depth interviews are used to emphasize changes in the function and use of public spaces and services during and after the pandemic. The result shows that differences and common elements configure the transformations of urban spaces since changes in the use of public spaces are closely connected to efforts to combat the pandemic. Meanwhile, in public services, changes are associated with the increasing use of ICT and Internet of Things (IoT). In the future, cities need to show their visions according to the local conditions supporting better spatial arrangement and management of urban environment due to ICT and IoT prominence.
Degraded Peatlands and Their Utilization Opportunities in Kepulauan Meranti Regency, Riau Province, Indonesia Turmudi, Turmudi; Saharjo, Bambang Hero; Prasetyo, Lilik Budi; Tjahjono, Boedi
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.84986

Abstract

Degraded peatlands are caused by various factors, including land fires, water mismanagement, and mining activities. Indicators of degraded peatlands can be identified through the type of land cover observed in the field, which commonly includes shrubs and barren land (open areas of ex-mining land). Therefore, this study aimed to determine the dynamics of the existence of degraded land and its utilization opportunities using spatial, image, and time series analysis methodDepartment Forest Resources Conservation & Ecotourism, Forestry Faculty, Bogor Agricultural University Kampus IPB Darmaga PO.Box 168 Bogor-Indonesias. To conduct the analysis, various data sources were employed, including Landsat imagery, the Regional Spatial Planning (RTRW) map, hotspots data, rainfall data, landforms maps, peatlands data, and soil information. The results of the study showed that between 1999 and 2019, the average area of degraded peatlands amounted to 198,084.54 hectares. Furthermore, the optimal area of degraded peatlands utilized for agriculture amounted to 7,122.45 hectares . Inventory of degraded peatland using the land cover approach can be obtained faster, cheaper, easier than the terrestrial method. Opportunities for using degraded land for agricultural purposes were also identified through the selection of plant species that exhibited adaptability to peatlands and held economic value. These selected plants, including sago, rubber, areca nut, and liberika coffee, were developed within the Meranti Islands Regency. 
Utilization of Remote Sensing and Geographic Information System to Identify Buffer Zones Area at Plumpang Fuel Depot Setiawan, Cahyadi; Hardi, Ode Sofyan; A'Rachman, Fauzi Ramadhoan; Nabilla, Lyzia; Wiranata, Andi; Furqon, Zidan; Salsabillah, Fadia; Maulana, Ibnu Adam; Wardana, Muhammad Wahyu; Deffry, Muhammad
Indonesian Journal of Geography Vol 56, No 1 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.85036

Abstract

Plumpang is a national vital object surrounded by residential areas in its vicinity. This study aims to identify buffer zones at the Pertamina Plumpang BBM Depot. The method used in this research is Spatio Temporal Analysis with secondary data from the land-use map of Jakarta, Google Earth imagery from 2002 to 2022, and Landsat 4 imagery from 1990. The results show that at distances of 50 meters, 50-100 meters, and 100-250 meters, there are 503, 870, and 2554 buildings, respectively. Furthermore, these buildings are predominantly very dense residential areas. Due to the highly concentrated population and the proximity to the depot, the area faces a high risk of fire disasters given the flammable nature of the fuel. The proximity of the settlement to the fuel depot has a direct correlation with the heightened risk of a fire disaster. The buffer zone distance used in the range of 50 - 100 meters to ensure the safety of the population from potential fire disasters. The designated buffer zone can be effectively transformed into a hydrological flow or water channel serving as a separator and barrier between the fuel depot and residential areas.
Temporal Assessment of the Effect of Flooding Vulnerability on Agricultural Land Use in the Gambia Ibol, Philip Mopnang
Indonesian Journal of Geography Vol 55, No 3 (2023): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.85232

Abstract

Flooding is a significant environmental problem, projected to intensify from 2010 to 2030. This natural disaster has affected several regions globally, leading to loss of life and property, community disruption, economic loss, injuries, and deaths. Factors contributing to flooding include heavy rainfall, rising sea levels, lowlands, waterways, climatic variations, wetlands, soil types, and unplanned urban settlements. The most severe case in the history of the Gambia struck in 2022. Therefore, this study aimed to identify areas vulnerable to flooding and the effect on agricultural land in the Gambia, as well as suggest preventive measures. The method adopted included the collection of secondary data from Landsat ETM imagery, Digital Elevation Model, rainfall data, Copernicus Global Land Services (CGLS), and Food Agricultural Organisation soil maps. The satellite imageries were processed and classified using ArcGIS 10.7.1, generating land use and land cover, slope, drainage density, rainfall, and soil maps. ArcGIS, combined with the Analytic Hierarchy Process (AHP), was used to integrate these maps to produce a vulnerability map for the study. The results showed areas with very high, high, moderate, low, and very low vulnerability. Based on the classification, coastal and lowland regions were in the high category. Therefore, this study recommended the construction of water barricades in vulnerable coastal areas to mitigate the disaster. 

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