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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 15 Documents
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Search results for , issue "Vol 53, No 3 (2021): Indonesian Journal of Geography" : 15 Documents clear
Oceanic Effect on Precipitation Development in the Maritime Continent during Anomalously-Wet Dry Seasons in Java Erma Yulihastin; Muhammad F P; Suaydhi Suaydhi; Iis Sofiati
Indonesian Journal of Geography Vol 53, No 3 (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.63543

Abstract

Anomalous rainfall during the dry season over the tropical region is determined by sea surface temperature (SST) anomalies driven by remote forcing. Anomalous precipitation during the dry season in Java (the so-called "anomalously-wet dry season”) has increased the number of hydrometeorological disasters, with notable events occurring in 2010, 2013, and 2016. Here we analyze anomalously-wet dry seasons in Java from 2000 to 2019 using variables such as precipitation, wind, temperature, outgoing longwave radiation, and SST obtained from the Tropical Rainfall Measuring Mission and ERA5 European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis. This study focuses on anomalously-wet dry seasons in Java during the absence periods of negative phase for the El Niño Southern Oscillation (ENSO) and/or Indian Ocean Dipole (IOD) by identification the main caused. The results show that the contribution of local seas is more significant (37%) in developing anomalously-wet dry seasons than La Niña (33%), the IOD and La Niña combined (17%), and the IOD alone (13%). Local Indonesian seas play a significant role in causing extreme precipitation and spread over the Maritime Continent. We also find that SSTs in the southern Java Sea are sensitive to a negative IOD, but not to La Niña.
Landslide Risk Analysis in Kelud Volcano, East Java, Indonesia Syamsul Bachri; Sumarmi Sumarmi; Sugeng Utaya; Listyo Yudha Irawan; Lela Wahyu Ning Tyas; Farizki Dwitri Nurdiansyah; Alif Erfika Nurjanah; Rahmat Wirawan; Akhmad Amri adillah; Denny Setia Purnama
Indonesian Journal of Geography Vol 53, No 3 (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.40909

Abstract

Pandansari village became one of the villages that has frequent landslide events in the period 2009-2015 compared with the surrounding area in Malang regency. The purpose of this study was to determine the level of landslide risk located within an active volcano. To enhance the comprehensive analysis of landslide disasters, we used a risk concept in this study. The landslide risk analysis was based on 3 determinants, namely hazards, community vulnerability, and regional capacity. The data collections were conducted using observation and documentation for landslide hazards and interviews as well as  Focus Group Discussion (FGD) for vulnerability and capacity aspects. The interviewed were applied for community and local government of Pandansari village. The recorded interviews were transcribed and analyzed according to recurrent themes in the answers. Findings from field investigation were then confronted with previous existing concepts of human exposure to natural hazards. Furthermore, the landslide hazard data were analyzed using spatial analysis tools, including GIS scoring, weighting, and overlaying weighted sum. The results showed the level of landslide risk has different values depending on the risk parameter, community vulnerability, and regional capacity. The level of landslide risk was divided into three levels, namely high with an area of 557.71 ha, moderate with 774.49 ha, and low with 1118.77 ha. Each of the risk factors, vulnerability, and capacity, has its characteristics in influencing the landslide risk in Pandansari Village. In relation to landslide disaster management, the risk analysis gives comprehensive input reaching good management practice in Pandansari village. 
Indigenous Indonesian Dayak Traditional Wisdom in Reducing Deforestation Sidik R. Usop; Ismi Rajiani
Indonesian Journal of Geography Vol 53, No 3 (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.43546

Abstract

The function of forests for Dayak people is not only to fulfill the needs of life but also related to the ancient belief to preserve natural resources. The study aims to analyze the traditional model of protecting the conservation area by applying surveys and in-depth interviews. In this particular case study, a set of values – batang garing (tree of life), belom bahadat (living compliant with customary law), pali (taboo) ,manyanggar (asking the consent  of the ancestor),memapas lewu (brushing the village)  – central to the Dayak Ngaju people, the indigenous population in Central Kalimantan, become contested in the course of the economic and development project. Adherence to these  central values creates movement to prevent damage to indigenous people's natural resources under the tag “Manyalamat Petak Danum” (Saving our homeland).
Construct Validity of the Knowledge and Skills in a Geography STEM Education Instrument among Prospective Teachers: Confirmatory Factor Analysis Mahat Hanifah; Sumayyah Aimi Mohd Najib; Saiyidatina Balkhis Norkhaidi; Nurul Hidayah Baharuddin
Indonesian Journal of Geography Vol 53, No 3 (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.47486

Abstract

Science, Technology, Engineering, and Mathematics (STEM) subjects refer to school education policies and curriculum options to increase competitiveness in science and technology for students. Geography connects STEM disciplines with the application of geographical technology and tools, which can better understand cross-disciplinary phenomena to address critical problems. This study was carried out to validate the construct of the knowledge and skills in a geography STEM education instrument among prospective teachers in Malaysia. The respondents consisted of 400 students of semesters one to eight from the Bachelor of Education in Geography program, Universiti Pendidikan Sultan Idris, Perak, Malaysia, who were selected using a simple random sampling technique. The constructs studied were the knowledge and skills in geography STEM education. The data were analyzed descriptively and inferentially using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) for item component grouping. The analysis results showed that the reliability value of Cronbach's alpha was at a high classification, which exceeded 0.70. The result of the EFA showed two components generated from the knowledge construct: STEM Knowledge and Applied Knowledge, and one component from the skill construct known as STEM Skill. Regarding the measurement model, CFA results showed that the solution was suitable and acceptable based on the suggested indicators. Therefore, the 25-item measurement model developed is suitable to measure the knowledge and skills in geography STEM education among prospective teachers in Malaysia. 
The Spatial Transformation and Sustainability of Development in the New City Areas of Metro Tanjung Bunga, Makassar City Batara Surya; Syafri Syafri; Haeruddin Saleh; Emil Salim Rasyidi
Indonesian Journal of Geography Vol 53, No 3 (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.50437

Abstract

The spatial transformation of the new city area of Metro Tanjung Bunga Makassar City has an impact on the conversion of productive agricultural land to urban industry. Changes in land use coupled with an increase in socio-economic activities lead to changes in spatial structure, spatial patterns, and a decrease in environmental quality in the direction of changes in the community's socio-economic system. This study aims to analyze: (1) Spatial transformation works as a determinant of the sustainability of the development of new urban areas, (2) The effect of changes in land use, activity systems, population mobility, and transportation systems on environmental degradation. This study uses a combination of qualitative-quantitative approaches sequentially. Data was obtained through observation, in-depth interviews, surveys, and documentation. The number of respondents in this study was determined as many as 250 which was carried out purposively. The results showed that the development of the new city area of Metro Tanjung Bunga which was predominantly developed for commercial activities, services, tourism, and large-scale settlements supported by transportation infrastructure development had an impact on urban sprawl, morphological changes, spatial segregation, and hierarchical differences in meeting the needs of the population. The results of the study indicate that changes in the use of space in the new urban area have led to changes in the single social formation of the local community towards multiple social formations. Furthermore, changes in land use, activity systems, and transportation systems have a positive correlation to environmental quality degradation with a determination coefficient of 60.8%. This study recommends the development of the new city area of Metro Tanjung Bunga towards the creation of social, economic, and environmental sustainability through the support of policies of the Makassar City Government in the future.
Change Detection of Benthic Habitat Communities using Landsat Imageries in Wakatobi Islands from 1990 to 2017 Muhammad Hafizt; Novi Susetyo Adi; Pramaditya Wicaksono; Doddy Mendro Yuwono; Bayu Prayudha; Suyarso Suyarso
Indonesian Journal of Geography Vol 53, No 3 (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.50724

Abstract

Currently, coral reef and seagrass ecosystems in Wakatobi Islands are categorized as 'poor' because the coverage of the healthy coral is less than 50%. Therefore, detailed information about their condition through time is needed to prevent coastal degradation. Time-series analysis of Landsat images recorded in 1990, 2000, 2010, and 2017 is expected to provide information on coral reefs' habitat in Wakatobi Islands over the studied period. This study aims to determine areas that experience drastic changes in benthic habitat cover and analyze the dynamics of the changes. The image processing procedures used in this study are image correction, image classification, and applying the Change Detection Model. The image correction consists of geometric, sunglint, and water column correction, while the change detection model uses SPEAR Tools in ENVI software. The results showed a precise location that experienced a drastic change in benthic habitat cover and the changes in benthic habitat classes every ten years, which started from 1990 to 2017.
Geospatial Analysis of Hydrometeorological Dynamics for Managing Socio-economic and COVID-19 Threats in the Ossiomo Watershed, Nigeria Innocent Ehiaguina Bello; Halilu A. Shaba
Indonesian Journal of Geography Vol 53, No 3 (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.59605

Abstract

The geographical occurrence and spread of the current novel COVID-19 pandemic are partly a function of the awareness, socio-economics, mobility, and health management practices in place. Ossiomo watershed in Edo State, Nigeria, is mainly a rural region with limited healthcare access and abundant water from River Ossiomo. One of the recommendations for preventing COVID-19 is washing hands with soap using running water. Thus, the novel COVID-19, a highly transmittable and pathogenic viral disease, requires effective management of available water resources for sustainable health development. The first confirmed case relating to the COVID-19 pandemic in Nigeria was announced on February 27, 2020, when an Italian citizen in Lagos tested positive for the virus. In most rural Africa, including Ossiomo, no pipe-borne water except rain harvesting for survival. Using GIS Inverse Distance Weighted (IDW) interpolation technique, the rainfall map produced (derived from a 31-year collated geo-located hydro-meteorological data - rainfall and discharge, covering the Ossiomo watershed) shows that rainfall decreases northward with minimum monthly precipitation of 18.8mm in January and to the south with a mean maximum rainfall of 339.0mm in July. NCDC records on Covid-19 were used to create Choropleth maps that revealed very low confirmed cases and relatively high deaths, though considered relatively low compared with global statistics. The Pearson Product Moment Correlation Coefficient (PPMCC) further indicates a strong correlation between rainfall and catchment discharge with r=0.717. With adequate socio-economic activities and water provisions, coupled with effective COVID-19 management practices, the pandemic may not linger in the study area.
River Flow Modelling for Sustainable Operation Of Hydroelectric Power Plant in the Taludaa-Gorontalo Watershed Sardi Salim; Muchlis Polin
Indonesian Journal of Geography Vol 53, No 3 (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.64627

Abstract

River flow discharge is generally measured by multiplying the cross-sectional river area at the measurement point with the flow velocity. However, this approach cannot be used for planning needs which involves knowing the changes in discharge values at all times, which are directly affected by the variations in weather conditions and catchment area systems. This is necessary because planning errors usually lead to unsustainable and interrupted operations. It is possible to determine the changes in the river discharge values using the rainfall-runoff modelling technique through the hydrograph output of the model. Therefore, this study used hydrological modelling techniques to obtain a watershed's spatial and temporal river flow discharge. This involved using parameters such as watershed area, curve number representing land use and soil type, time lag as the delay between maximum rainfall and the occurrence of peak discharge, and the initial abstraction that considers all the losses before the runoff occurred. Moreover, rainfall data were obtained from an ARR station installed around the watershed area, while water level data were retrieved through an AWLR station installed in the river at the debit measurement point. The model was analyzed using HEC-HMS software, while the dependable discharge for power plants was analyzed using the flow duration curve method. The results showed that the rainfall-runoff hydrological modelling technique applied to the Taludaa-Gorontalo sub-watershed could ensure the continuous and sustainable operation of the hydroelectric power plant.
Rainfall variability analysis using Precipitation Concentration Index: a case study of the western agro-climatic zone of Punjab, India Kishan Singh Rawat; Raj Kumar Pal; Sudhir Kumar Singh
Indonesian Journal of Geography Vol 53, No 3 (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.64890

Abstract

Due to climate change, the rainfall pattern has changed, which ultimately either cause flood or drought in any region of the world. Hence, a rainfall variability analysis helps to manage the water resources better. Rainfall variability analysis of a long term at particular area reveals vital information about past and future climate. The study's objective was to analyse the rainfall variability and intensity of long term monthly rainfall data (1982–2018) using the Precipitation Concentration Index (PCI). Data was collected from Punjab Agricultural University, Regional Research Station, located at Bathinda, India. The PCI was calculated for the annual, winter, pre-monsoon, monsoon, post-monsoon season, and decadal scale. Results have outlined that PCIAnnual ranges from the lowest of 14.96 in 2006 to the highest of 43.82 in 2000, and the average of 37 years is 23.22. About ≈59.5% of the year PCIAnnual was characterised by Strong Irregularity of Precipitation Distribution (SIPD, PCIAnnual> 20), an indication of SIPD within the 37 years. While ≈2.7% of the year recorded annual value within the moderate irregular range (10<PCIAnuual<15), which indicates an irregular rainfall distribution (MIPD) and concentration across the months. Similarly, the precipitation concentration in China was also found strongly irregular in the western and northern parts of the northwest and the northern region of the Tibetan Plateau. The study recommends that the Bathinda Development Authority (BDA) may use and adopt these results and redevelop the existing groundwater recharge structures (pond) and artificial recharge structures.
Urban Planning in Al-Madinah Al-Munawarah using New Green Spaces Modelling through GIS Application Nadiyah Mazi Aljohani; Mokhtar Jaafar; Lam Kuok Choy
Indonesian Journal of Geography Vol 53, No 3 (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.64991

Abstract

The present study investigated the new green spaces modelling in Al-Madinah Al-Munawarah using GIS application. It adopted the mental health theory as a theoretical framework. The data of the study was collected through two data collection instruments, namely, questionnaire as well as interview. The quantitative data was analysed through SPSS software while the qualitative data collected from the interviews was qualitatively analysed using thematic content analysis. The findings of the study revealed the most suitable model for potential new green spaces using GIS analysis (descriptive summaries) for urban planning in Al-Madinah Al-Munawarah is Quba (25.5%). Moreover, the most prominent challenge facing the design of a new green space in Al-Medinah Al-Munawarah, Saudi Arabia, is the weakness of the budget allocated to designing green spaces (86.7%). It is also shown that the most prominent benefits of designing new green spaces for the residents of Al-Madinah Al-Munawarah are the provision of seats and seating areas. Therefore, the participants stress the importance of taking into account the provision of seats and seating places when designing green spaces (93.3%). In terms of the potential of developing urban green spaces in Al-Madinah Al-Munawarah, the majority of the respondents believe that urban green spaces can be developed, to a large degree, in Al-Madinah Al-Munawarah in the future. Therefore, the study recommends that urban green spaces should be developed in Al-Madinah Al-Munawarah and the budget allocated to designing green spaces in Al-Madinah Al-Munawarah should be also increased. This study could be considered as a guideline for future development that can be used by government in Saudi Arabia.

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