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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 633 Documents
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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.
The Risk of Non-Communicable Diseases after being Exposed to the Urban Flood; A Literature Review and Meta-Analysis Renny Nurhasana; Risky Kusuma Hartono
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.65401

Abstract

Background: Risk mapping for the various types of non-communicable diseases (NCDs), which lead to the cause of death due to the impact of the urban flood, is rarely conducted. The study aimed to conduct a Systematic Literature Review (SLR) and meta-analysis of the risk of various NCDs after the community experienced the urban flood disaster. Methods: The data was taken from PubMed, ScienceDirect, Taylor and Francis, and ProQuest from June 2010 to June 2020 by searching for the words of flood and NCDs that only occurred in urban areas. This study refers to the guideline that is widely used to conduct meta-analysis research, namely PRISMA. The procedure was started by searching, screening, and validating the original articles through meta-analysis using R Studio. Result: Twenty-six original articles were selected for SLR, and only two articles were not eligible for meta-analysis. Mental illness (0.53, 95% CI, 0.33-0.68), heart problems (0.39, 95% CI -0.11-0.73), and respiratory problems (0.53, 95% CI, 0.02-0.82) are the NCDs categories occurring after the community, predominantly female and the community aged >40 years, was exposed to the urban flood. This risk magnitude finding complements the previous studies that only did a literature review. The heterogeneous result (tau^2 p-value>0.05) and bias effects of publication (Egger test p-value>0.05) indicated that immediate assistance for victims is essential to prevent the onset of NCDs. Conclusion: Without early prevention and urban planning, the urban flood disaster can contribute to mental illness, heart problems, and respiratory problems.
The Assessment of Groundwater Vulnerability towards Contamination using the DRASTIC and NV Indexes in Banjarbaru City, South Borneo, Indonesia Firza Syarifa Zahra; Thomas Triadi Putranto
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.66716

Abstract

The current excessive use of groundwater is exacerbated by human activities, which directly or indirectly trigger surface pollution and gradually affect to the subsurface, including groundwater. Indonesia is one of the developing countries that encounter these obstacles, specifically Banjarbaru City in South Kalimantan Province and its surroundings. Hence, proper management is needed to maintain the sustainable function of groundwater, such as by determining its vulnerability index to pollution. This study used geospatial analysis to determine the intrinsic and extrinsic vulnerability of groundwater via the DRASTIC and NV index methods, respectively, through visual representations on a map. The validation involved the distribution of nitrate and nitrite values to review the relationship between vulnerability levels and the presence of anthropogenic influences. Subsequently, the results of the DRASTIC method showed that the study area is included in three vulnerability indexes, namely low (95-120), medium (120-160), and high (160-186). The NV method further indicated that the groundwater vulnerability indices are divided into four, namely very low (21.2-70), low (70-110), moderate (110-150), and high (150-186). Based on the results, the use of specific vulnerabilities was considered more effective than the intrinsic technique in determining the vulnerability index because the NV method considers land use as a parameter to provide more detailed outcomes.
Physical and Chemical Parameters of Estuarine Waters around South Sulawesi Hasriani Ayu Lestari; Muh. Farid Samawi; Ahmad Faizal; Abigail Mary Moore; Jamaluddin Jompa
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.67831

Abstract

Water quality parameters can be indicators of pollution driving riverine, estuarine and coastal resource degradation. This study evaluated water quality in the downstream, estuarine and surrounding coastal waters of 8 major rivers around the western, southern and eastern coasts of South Sulawesi Province, Indonesia. Data on physical and chemical parameters (salinity, temperature, total dissolved solids (TDS), conductivity, turbidity, pH, dissolved oxygen (DO), nitrate and ammonium) were collected during January 2020. These data were interpolated and mapped using the Kriging tool in ArcGIS 9.3 and analysed using the STORET scale and principle component analysis (PCA).  STORET values indicate moderate to heavy pollution, with the most severe pollution in Makassar City. Dominant defining parameters based on the PCA were nitrate, ammonium and DO at the Malili and Makassar sites,  pH, temperature, TDS and salinity at the Palopo, Bulukumba and Pangkep sites, conductivity at the Takalar site and turbidity at the Pinrang site.
Unregistered artesian Well Management in Pasuruan, Indonesia: An Attempt to Protect Groundwater Resources Heru Hendrayana; Indra Agus Riyanto; Azmin Nuha; Ahmad Rif’an Khoirul Lisan
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.68185

Abstract

The number of unregistered artesian wells increases every year in the northern slopes of Bromo Volcano, Pasuruan. Artesian wells are used for domestic needs and agricultural irrigation but are not followed by environmentally sound groundwater use. The purpose of this study is to assess the potential for groundwater, groundwater use, wasted groundwater, and recommendations for groundwater management.  The groundwater potential was obtained by measuring the depth of the groundwater table, piezometric surface of artesian wells, and geoelectrical data. Water uses were obtained from calculations based on the Indonesian National Standard. The amount of wasted groundwater was obtained by comparing the groundwater potentials, groundwater uses, and groundwater discharges from unregistered artesian wells. Water transfer was assessed by selecting unregistered artesian wells with discharges able to fulfill the water demands of each village. Groundwater in the Sub-Districts of Gondang Wetan and Winongan has high potential consisting of 1 unconfined aquifer group and two confined aquifer groups. Gondang Wetan and Winongan Sub-Districts are characterized as wasting groundwater potential through unregistered artesian wells. The discharge flow of unregistered artesian wells exceeds the water needs (>100%) in Winongan and Gondang Wetan Sub-Districts. Groundwater can be managed by water transfer, closure of artesian wells, and regulation of artesian wells use. Water can be transferred to areas not covered by Artesian wells in 20 villages. The number of artesian wells used for water transfer is 20 with a discharge of 5-20 liters/s. 
The Role of the Peoples of the Uralic Language Family in the Formation and Development of the Russian Civilization Nina N. Loginova; Marko D. Petrović; Irina A. Semina; Yuriy P. Shabaev; Nataliya V Yakovenko
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.68188

Abstract

The study examines the territorial organization of the Ural peoples and languages, reveals the features of the regional interaction and population dynamics, addresses the problems of the ancestral homeland and ethno genesis, the role of Finno-Ugrians in the history of Russia, highlights the acute issues of preserving languages and culture. The research focuses on some features in the development of the Uralic ethnic groups within the framework of the Russian civilization. It is alleged that the ethnic and political consolidation of most Finno-Ugric tribes was born in the bowels of the ancient Russian state and the first sprouts of the future unity of peoples were born, and their role in the powerful national-state construction that unfolded on the huge Eurasian territory of Russia in the period between 16th and 20th century is analyzed. The outcomes confirm that the Finno-Ugric peoples have always been an organic part of the Russian ethno-cultural mosaic. They actively participated in the strengthening of the state, mastered its vast natural wealth, and created the economic power of the country. Due to the fact that in Finno-Ugric, significant attention is paid to the problems of preserving languages and culture among Samoyed peoples, which cannot be called Finno-Ugric, we propose to use the term "Uralistics" more widely. This is a more accurate concept and can be used in the study of cultural processes among the peoples united in the Uralic language family.

Page 27 of 64 | Total Record : 633

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