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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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Analysis of the population dynamics in the “Slavic World” with a special focus on Russia Nina N. Loginova; Milan M. Radovanović; Anatoliy A. Yamashkin; Goran Vasin; Marko D. Petrović; Dunja Demirović Bajrami
Indonesian Journal of Geography Vol 52, No 3 (2020): 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.51202

Abstract

Population changes of the Russians and other Slavs are an important original indicator of demographic, economic, political, and cultural analysis of over 300 million Slavic inhabitants in Central, Eastern, and Southeastern Europe. The indicators are conditioned by the large number of people executed in World War I and World War II, significant economic migrations, the disintegration of the Soviet Union, Yugoslavia, and Czechoslovakia. Utilizing data from official reports, the authors proceed to analyze the demographic tendencies in order to find out the relationship between modern demographic trends and political and economic events over the past years. The results showed that economic and demographic stagnation, which favor religious and national (ethnic) ambivalence, influence the strengthening of groups ethnically isolated or religiously differentiated in the observed macroregions of Eurasia. The contemporary challenges of modern society in terms of global politics (e.g. terrorism and migrations) will be more pronounced and turbulent in these areas. For these reasons, the original data represent an important segment of the study of Slavic history, demography, and politics throughout the turbulent 20th century and the beginning of the new millennium.   
Land Surface Temperature Assessment in Central Sumatra, Indonesia Tofan Agung Eka Prasetya; Munawar Munawar; Muhammad Rifki Taufik; Sarawuth Chesoh; Apiradee Lim; Don McNeil
Indonesian Journal of Geography Vol 52, No 2 (2020): 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.51327

Abstract

Land Surface Temperature (LST) assessment can explain temperature variation, which may be influenced by factors such as elevation, land cover, and the normalized difference vegetation index (NDVI). In this study, a multiple linear regression model of LST variation was constructed based on data from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Terra satellite, relating to the period, 2000-2018. The highest LST variation of nearly 1.3 °C/decade was found in savanna areas while the lowest variation was in the evergreen broadleaf forest and woody savanna, which experienced a decrease of 2.1 °C/decade. The overall mean change of LST was -0.4 °C/decade and the regression model with LST as the dependent variable and elevation, land cover type, and NVDI as independent variables produced an R square of 0.376. The variation in LST was different depending upon the NDVI.
Association Study Between Thermal Front Phenomena and Bali Sardinella Fishing Areas in Bali Strait Argo Galih Suhadha; Andi Ibrahim
Indonesian Journal of Geography Vol 52, No 2 (2020): 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.51668

Abstract

Thermal front has been widely used as a parameter for determining fishing zones. Tis study aimed to  determine  the  thermal  front  distribution  and  to  analyze  its  association  with  the  Bali  Sardinella  fishing zones  in  the  Bali  Strait.  Termal  front  generated  using  sea  surface  temperature  (SST)  from  Aqua  MODIS imagery. Meanwhile, the fishing point data of Bali Sardinella were collected to validate our analysis results. Te data were analyzed into Spatio-temporal information. Te main facts that stand out are that the thermal front  was  predominantly  found  in  the  peak  of  first (April)  and  second  (September)  transitional  season, which was the peak season for the thermal front to occur in a year. Te least of the thermal front occurred in the  South-west  monsoon.  Te  linear  relationship  was found  when  the  peak  of  thermal  front  occurrence compared to the number of catch yields. Based on matching distance analysis, the maximum distance used (twenty  kilometres  buffer)  show  36  matching  points from  101  data  compared  or  at  range  35.6%.  In conclusion, there is a linear relationship between the thermal front parameter and catch yield. It is still used to predict the fishing zone, even though the correlation is not significantly found.
The Carrying Capacity Assessment of Two MRTStations Transit-Oriented Development Areas in Jakarta Hayati Sari Hasibuan; Ahyahudin Sodri; Riza Harmain
Indonesian Journal of Geography Vol 53, No 1 (2021): 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.51968

Abstract

Many studies have investigated the effects of transit-oriented development (TOD) on density, design, diversity development, and transit ridership. However, fewer studies address the issue of carrying capacity of TOD. This paper aims to assess TOD areas' carrying capacity using four criteria (land capability, water availability, socio-economic, and green infrastructure) and  14 indicators on Jakarta's two TOD areas. These results show that even though both of the TOD area, Dukuh Atas and Lebak Bulus, are in the good of carrying capacity in land capability, there are some issues to address the possibility of water availability. For TOD's success, the socio-economic criteria should be promoted in the fringe-urban TOD area like Lebak Bulus. We identified the green infrastructure, such as pedestrian, cycling route, and green open space, still in low development and should be pursued to extend the TOD carrying capacity for the future.
Topography changes and thermal distribution at the Kelud crater after the 2014 Plinian eruption Wahyudi Wahyudi; Ari Setiawan; Heriansyah Putra; Herlan Darmawan; Imam Suyanto; Irwan Meilano; Irzaman irzaman; Maria Evita; Mitra Djamal; Moh Yasin; Nina Siti Aminah; Perdinan Perdinan; Retna Apsari; Wahyu Srigutomo; Wiwit Suryanto
Indonesian Journal of Geography Vol 52, No 3 (2020): 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.51986

Abstract

Topography of a volcano crater can change due to endogenic processes such as deformation or eruption, or surface processes. Erosion and deposition are surface processes that may occur and gradually change the slope of the inner volcano crater. Here, we investigated erosion and deposition processes that occurred in the Kelud crater after the 2014 plinian eruption. We used high-resolution Digital Elevation Models (DEMs) and orthomosaic images derived by drone photogrammetry that acquired between September 2018 and July 2019. We obtained hundreds of aerial images which were reconstructed to obtain 3D models of Kelud’s crater by using Structure from Motion (SfM) technique. Results show erosions at alluvial fans that dominantly located at the east valleys of Kelud crater. The erosion removed the volcanic materials up to -5 m which transported and deposited close to the vicinity of the Kelud crater. The deposition process causes the increase of the Kelud crater lake up to 3 m. Moreover, we also mapped the thermal distribution of the Kelud crater lake by using low cost thermal camera. Our thermal investigation is able to identify some hotspots at the vicinity of the Kelud crater lake with range temperature of 43.7°C – 55.3°C, while the average apparent temperature of the Kelud crater lake is ~ 29°C. This high temperature area may indicate underwater active fractures that continuously release volcanic gasses which leads to convection heat transfer through Kelud’s water lake.
Lineament Extraction using Gravity Data in the Citarum Watershed Gumilar Utamas Nugraha; Karit Lumban Goal; Lina Handayani; Rachmat Fajar Lubis
Indonesian Journal of Geography Vol 53, No 1 (2021): 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.52402

Abstract

Lineament is one of the most important features showing subsurface elements or structural weakness such as faults. This study aims to identify subsurface lineament patterns using automatic lineament in Citarum watershed with gravity data. Satellite gravity data were used to generate a sub-surface lineament. Satellite gravity data corrected using Bouguer and terrain correction to obtain a complete Bouguer anomaly value. Butterworth filters were used to separate regional and residual anomaly from the complete Bouguer anomaly value. Residual anomaly gravity data used to analyze sub-surface lineament. Lineament generated using Line module in PCI Geomatica to obtain sub-surface lineament from gravity residual value. The orientations of lineaments and fault lines were created by using rose diagrams. The main trends observed in the lineament map could be recognized in these diagrams, showing a strongly major trend in NW-SE, and the subdominant directions were in N-S. Area with a high density of lineament located at the Southern part of the study area. High-density lineament might be correlated with fractured volcanic rock upstream of the Citarum watershed, meanwhile, low-density lineament is associated with low-density sediment. The high-density fracture might be associated with intensive tectonics and volcanism.
Assessment of Road Rehabilitation in Ibadan, Nigeria Adewale Yoade; Samson Olaitan Olanrewaju; Sesan Adeniyi Adeyemi
Indonesian Journal of Geography Vol 52, No 2 (2020): 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.52412

Abstract

The study examined road rehabilitation in Ibadan North East Local Government of Oyo State, Nigeria. The data used in this study was obtained from both primary and secondary sources. The primary data was obtained through a reconnaissance survey and administration of the questionnaire. The reconnaissance survey is appropriate to establish the nature of an environment, event or situation before making decisions. The population for this study consists of all the residents available in Ibadan north local government. Both descriptive and thematic content analysis was employed in the analysis. Findings showed that rehabilitation (3.33) is the most desirable facility in the study area. Construction, maintenance, traffic management capacity building and street naming followed with 3.01, 2.56, 2.42, 2.28 and 2.12, respectively. The study concluded that compensation is an important factor that can enhance sustainable urban renewal programme, and therefore resident whose building was affected are to be compensated so that they could secure a better place for living or for their transaction. 
Tourist Attraction and Tourist Motivation in The Patuha Mountain Area, West Java Dema Amalia Putri; Maria Hedwig Dewi Susilowati; Jarot Mulyo Semedi
Indonesian Journal of Geography Vol 53, No 1 (2021): 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.52415

Abstract

The Bandung Regency Spatial Plan for 2007-2027 regulates The Patuha Mountain Area as one of the regions that have a special role in the tourism sector. This research was conducted to find out the attractiveness value and motivation of tourists on tourist attractions as well as the relationship between them in The Patuha Mountain Area. Assessment of tourist attractiveness value was based on the completeness of attraction, tourist facilities, and accessibility. Meanwhile, tourist motivation was based on tourist preferences, tourist needs, and tourist travel status. The variables were analyzed using spatial analysis and chi-square test statistics. The results indicated that the high attractiveness value has a nodal destination system, while medium and low attractiveness value has a linear destination system. Tourist motivation was being dominated by flashpacker types. Tourists who visited The Patuha Mountain Area are not being influenced by the attractiveness value of tourist attractions. Although tourist attraction has complete tourist facilities, tourists only focus on the attraction compared to the tourist facilities and accessibility.
Enhancing the knowledge spillover through the formation of the oligocentric national innovation system Yuri V. Preobrazhenskiy; Anna A. Firsova
Indonesian Journal of Geography Vol 52, No 3 (2020): 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.53445

Abstract

The processes of spatial polarization of economic activity and potential of regional innovation systems are an important area of study of the innovation transfer in the global world. The present study continues the scientific discussion on the ratio of concentration and uniform innovation development. The objective of the study is to analyze indicators of spatial concentration of innovation activity and the knowledge spillover between regions in the national innovation system. The main methods are the application of the Herfindal-Hirschman index, as well as cartographic analysis. The analysis of the concentration degree of the following indicators of innovation activity was carried out: patents, developed and used advanced technologies, R&D costs, output of innovative products in these regions of Russia using the Herfindal-Hirschman index. A graphical method was used to identify the main regions of the centers and peripheries, and a map of fragmentation of the country's innovative cores was constructed. The results of the study confirmed the hypothesis of a greater spatial concentration of knowledge in comparison with the release of innovative products. Analysis of potential knowledge spillover between regions showed that the indicators associated with the generation of knowledge, focused on the Russian regions is significantly stronger than the indicators for innovative output: spatial concentration of developed advanced technologies are higher than that used advanced technologies, and the concentration of expenditure on technological innovations ahead of the release of innovative products. This indicates an unbalanced nature of the effects of the innovative spillover, when the use of technologies is more widespread than their development and implementation. Recommendations are also presented on a more efficient organization of the innovation space and on the transition from a monocentric model of organizing a socio-economic space to an oligocentric model to reduce excessive polarization and increase the efficiency of knowledge spillover.
Topography and structural changes of Anak Krakatau due to the December 2018 catastrophic events Herlan Darmawan; Bachtiar Wahyu Mutaqin; Wahyudi Wahyudi; Agung Harijoko; Haryo Edi Wibowo; Nia Haerani; Mamay Surmayadi; Syarifudin Syarifudin; Raditya Jati; Suratman Suratman; Wikanti Asriningrum
Indonesian Journal of Geography Vol 52, No 3 (2020): 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.53740

Abstract

The flank collapse of Anak Krakatau on 22 December 2018 caused massive topography losses that generated a devastating tsunami in Sunda Strait, which then followed by eruptions that progressively changed the topography and structure of Anak Krakatau. Here, we investigated topography and structural changes due to the December 2018 flank collapse and the following eruptions by using high resolution Digital Elevation Model (DEM) before and after the events and sentinel 1A satellite image post-flank collapsed. Results show that the volumetric losses due to the 22 December 2018 flank collapsed is ~127 x 106 m3, while the following eruptions caused ~0,8 x 106 m3 losses. Structural investigation suggests two structures that may act as failure planes. The first structure is located at the western part of volcanic edifice that associated with hydrothermal alteration and the second failure is an old crater rim which delineated an actively deform volcanic cone.

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