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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 506 Documents
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Sea Surface Temperature (SST) and Rainfall Trends in the Singapore Strait from 2002 to 2019 Mubarak Mubarak; Rifardi Rifardi; Ahmad Nurhuda; Romi Fadli Syahputra; Sri Fitria Retnawaty
Indonesian Journal of Geography Vol 54, No 1 (2022): 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.68738

Abstract

Studying Singapore Strait waters condition as a form of maritime mitigation is necessary because it is an international shipping lane. The dominant weather changes include rainfall, wind flows, and sea surface temperature (SST). This study aims to reveal the relationship between rainfall and SST activity in the Singapore Strait for over 18 years, from 2002 to 2019. The results showed a negative correlation, where the SST decreases as rainfall increases and vice versa. In addition, the high rainfall and low SST distribution occur in the Western season (December–February). The low rainfall intensity and high (warm) SST distribution occur yearly in the transition from West to East (March–August). Also, the distribution pattern is influenced by rainfall intensity and the water mass from the South China Sea and the Malacca Strait, where the strait is a mixture of these masses. The neural network model confirmed the negative correlation. Hence a small change in SST causes rainfall if it is cooler, and less precipitation if warmer.
Flood Disaster Risk Model in Karawang Regency's Industrial Area, West Java Province, Indonesia Aruminingsih Aruminingsih; Dwi Nowo Martono; Tri Edhi Budhi Soesilo; Rudy Parluhutan Tambunan
Indonesian Journal of Geography Vol 54, No 1 (2022): 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.69027

Abstract

Telukjambe Barat and Telukjambe Timur Sub-Districts, Karawang Regency, have a high flood risk level due to changes in Land Use/Land Cover and the yearly occurrence of runoff water discharge. This research aims to analyze the rate and pattern of land-use change due to industrial development, examine the correlation of flood impacts with environmental-socio-economic factors, and develop a flood risk model in industrial areas. Data were collected through methods of system dynamics, remote sensing, geographic information system, questionnaire distribution, focus group discussions, and in-depth interviews with stakeholders. The results showed that floods in this regency are due to massive inland changes, such as the transition from vegetation and water bodies to industrial and residential areas and a strong relationship between environmental-social-economic factors. In other cases, areas with urban land conversion are likely to be flood-prone zones in places such as the Philippines, Belgium, and China. Based on the correlation test that has been conducted, the relationship with the highest level of closeness is the correlation between environmental factors and the impact of flooding, which has a value of 0.791. Therefore, the disaster risk model with an integrated spatial plan approach and an ecological perspective is an option for realizing sustainable development in industrial areas in Karawang Regency.
Modeling the Potential of Tsunami Hazard in Labuan Bajo Towards A Disaster-Resilient Tourism Area Mardi Wibowo
Indonesian Journal of Geography Vol 54, No 1 (2022): 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.71220

Abstract

In 2019, Labuan Bajo was designated a super-priority tourism destination, but this area is prone to earthquakes and tsunamis. The potential threats of disasters need to be considered when developing the tourism sector. Therefore, this study aims to determine the height and arrival time of tsunami waves based on a worst hypothetical scenario on the north coast of Labuan Bajo and its surroundings. The method used was numerical modelling with open source software TUNAMI F1, which calculated the wave propagation based on linear equations in spherical coordinates based on worst scenarios. The results showed that the Flores back-arc thrust earthquake caused a reasonably high tsunami with a fast arrival time at Labuan Bajo. The wave height of the tsunami around Labuan Bajo, Rinca, and Komodo Island is at least 3 m, but it reaches 8-9 m under certain conditions. Furthermore, its arrival time on the coast of Labuan Bajo is less than 2.5 minutes. This is much faster than those in Aceh (2004), Pangandaran (2006), and Palu (2018). Even though the early warning came 5 minutes after the earthquake, a high level of preparation and awareness is required to create a disaster-resilient tourist area in Labuan Bajo.
Problem and Alternative Solutions: Impact of Changes in Law concerning Regional Government on the Law of the National Sea Khomsin Khomsin
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.51237

Abstract

As one of the largest archipelagic countries in the world, Indonesia has an area of inland waters of 3.11 million km2 and a territorial sea area of 290,000 km2. Indonesia also has 17,504 islands, 34 provinces, and 514 cities/districts. For orderly administration, the government and parliament established Law No. 32/2004 amended by Law No. 23/2014 concerning regional governance. In both laws, there is little regulation on the management of marine areas in the provinces and districts/cities. Since the Law No. 32 of 2004 on amendments became Law No. 23 of 2014, some problems arose, namely vertical references, management authority, and archipelagic provinces or districts/cities. This paper describes the problems and alternative solutions to address the problems caused by the amendments to Law no. 32/2004 into Law no. 23/2014. The method used is to compare the vertical references used by Law no. 32/2004 namely LWL with Law. No. 23/2014 namely HWL. The results of this study recommend that to return to the vertical reference used, it must return to HWL by UNCLOS 1982. In addition, the authority for managing marine areas must also be returned to the district and city governments and there is recognition of districts/cities and archipelagic provinces that are not separated by the sea.
Migration Trajectories among Rural Households in Indonesia Agus Joko Pitoyo; Idris Ihwanudin; Sukamdi Sukamdi; Muhammad Arif Fahrudin Alfana; Seri Aryati
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.57819

Abstract

International migration trajectory is one of the important aspects discussed when viewing the migration culture of a region. The specific types and patterns created are unique and dependent on the length of the migration history. Therefore, this study is aimed to explain the migration history carried out by residents in Ponorogo Regency, East Java Province, and the factors that influence international migration. This is a survey research of 515 international migrants. The results showed that the migration pattern in Ponorogo Regency was divided into one, two, and three destination countries with temporal space-related cultural factors used to determine an important influence on rural households' ability to work abroad. Similar to other studies, age and gender are the two key variables related to migration trajectories in Ponorogo Regency.
From solitary to an adaptive continuum process: Toward a new framework of natural disaster emergency decision-making Siska Sasmita; Bevaola Kusumasari; Agus Pramusinto; Ely Susanto
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.60227

Abstract

Major studies in emergency decisions are focusing on how techno-rational approaches applied in early warning systems to produce an output; rarely explore its opponent, the naturalistic intervention, or how both paradigms function in a crisis decision process. This research aims to identify the actual process of emergency decision making in the context of natural hazard studies, whether it employs the techno-rational or purely naturalistic approach. A systematic review is adopted to assess papers in the period 2000-2018 within the ‘emergency decision making’ AND “natural disaster” keywords. Research finds a non-techno-rational paradigm that contributes to producing a decision outcome. Instead of categorizing it the naturalistic paradigm as named by the scholars, we labelled it a non-technological paradigm. It consists of two main instruments: individual and institutional interventions, that together with the techno-rational instrument develop an adaptive continuum behavior while operating in uncertainty condition in order to generate an effective evacuation order for vulnerable people.
Powers on Community-Level Deliberation: A Power Cube Approach Muhammad Taufiq; Suhirman Suhirman; Tubagus Furqon Sofhani; Benedictus Kombaitan
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.60911

Abstract

This study is generated by the limited understanding of the actor's power on village-level deliberation. In community-level deliberation, especially for villagers, planning struggles with unbalanced power from involved actors to avoid potential failures due to inappropriate implementation and waste of state finances. Problems from policy formulation results have distorted the consensus. Community-based planning faces different power characteristics displayed by involved actors. However, it seems that this matter's understanding is mostly obtained in Western urban areas context and few have studied it in the rural context, even more, sourced from non-Western and global south practices. Questions arise on the power capabilities each actor has and its implications for the planning formulation results. This article aims to provide an understanding of the actor's position and their source of power. It investigates the power identities of involved actors on the community-level deliberation through a power cube approach. Community-level deliberation in Pematang Tengah village, Indonesian, is used as the case study. Primary data were obtained from interviews with twenty-one respondents, observation, and document analysis during 2018-2020. The result shows that each actor displays a specific power characteristic driving their influences on the planning formulation results. This condition has implications for the construction of the power holder's influence in dominating the deliberation process.
Influence of Spatial Abilities on Spatial Data Quality in Participatory Mapping Yoga Kencana Nugraha; Purnama Budi Santosa
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.64931

Abstract

Participatory mapping (PM) method has become an alternative in spatial data collection activities for various mapping activities, including updating data on Rural & Urban Land and Building Tax (PBB-P2). From several experiences in PM application, various quality results have been found. Differences in the levels of spatial abilities of PM actors are assumed to affect the quality levels of PM results. Therefore, this study aimed to determine the effects of spatial abilities on the quality of spatial data generated in PM activities. It consisted of several stages of preparing instruments for measuring spatial abilities, collecting spatial data through PM, and correlation analysis. The instrument used to measure the levels of spatial abilities of 28 subvillage chiefs was the Purdue Spatial Visualization Test. The quality of PBB-P2 spatial data in 28 subvillages was randomly selected and assessed in terms of position, area, and geometric accuracies with reference to the land registration map from National Land Agency. Results indicated a positive correlation between the visual spatial ability and the spatial data quality of the PM results with a value of r = 0.823. Our findings are expected to be used as references for parties who carry out PM activities to be able to plan such activities.
Geospatial approach to accessibility of referral hospitals using geometric network analysts and spatial distribution models of covid-19 spread cases based on gis in bekasi city, west java Ruki Ardiyanto; Supriatna Supriatna; Tito L. Indra; Masita Dwi Mandini Manesa
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.66099

Abstract

Bekasi City has a high population density, as seen from its growth rate in 2020. Therefore, geospatial analysis is required to support and provide effective and efficient health services, evaluate the need for referral hospital capacity, and minimize the spread of COVID-19 cases in this city. The geospatial methods used in this study are Geometric Network Analyst and Geographic Weighted Regression (GWR), with Service Area (SA) used for analysis. The results based on the distance between the referral hospitals and settlements in Bekasi City showed that more than 2.201 million people, or 90%, have been well covered. Meanwhile, regarding travel time, 1.792 million people or 73% in eight sub-districts are in well-served areas. Conversely, referral hospitals do not cover four sub-districts, namely Bantar Gebang, Jati Sampurna, Medan Satria, and Jati Asih. The spatial modeling analysis results using GWR with spatial-temporal data recapitulation of data reports for eight months showed predictions for the spread of confirmed cases in six sub-districts, namely West Bekasi, North Bekasi, East Bekasi, Medan Satria, Mustika Jaya, and Rawalumbu. This implies that local governments need to suggest more referral hospitals serving people who live far from the existing referral hospitals.
Bali Strait‘s Potential Fishing Zone of Sardinella lemuru Dinarika Jatisworo; Bambang Sukresno; Denny Wijaya Kusuma; Eko Susilo
Indonesian Journal of Geography Vol 54, No 2 (2022): 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.66380

Abstract

Catch fluctuation of Sardinella lemuru in the Bali Strait in the period 2007 - 2019 shows a significant decrease. The fishermen of this area demanded information on the Potential Fishing Zone (PFZ) specifically targeted for Sardinella lemuru beyond their traditional. PFZ will be very helpful, especially during the famine years. Identification of a Potential Fishing Zone (PFZ) is highly important for increased fishing yields and also reduced fishing time for fishermen. Bali strait is dominated by Sardinella lemuru and contributes 16,2% of the total small pelagic fishery production in Fisheries Management Area (FMA) 573. Bali Strait also supports the fishing industry in Muncar (Banyuwangi-East Java) and Pengambengan (Jembrana-Bali). This study will produce a special PFZ for Sardinella lemuru that is not yet available in Indonesia by using remotely sensed and observer data. Here, we apply the Empirical Cumulative Distribution Function (ECDF) algorithm approach for Sardinella lemuru detection. ECDF was developed using Sea Surface Temperature (SST) and Chlorophyll-a (Chl-a) data from Aqua MODIS and extracted according to observer data during 2011-2014. PFZ for Sardinella lemuru in Bali strait was affected by 72,8 % Chl-a conditions and 27,2% by SST conditions. The maximum suitable preference for Sardinella lemuru in Bali Strait is Chl-a condition at 0,2 mg/m3 and SST condition at 28,38°C in northwest monsoon, while in southeast monsoon are 0,97 mg/m3 for Chl-a and 25,61°C for SST. ECDF model result has 69,33% accuracy, which shows the result of Sardinella lemuru PFZ has good accuracy.

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