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Journal of Applied Geospatial Information
ISSN : -     EISSN : 25793608     DOI : -
Journal of Applied Geospatial Information (JAGI) is a national and international peer review journal published by Politeknik Negeri Batam. The JAGI is issued 2 times a year in electronic form, publishes Original Research Articles (full papers and short communications) and Review (full and mini reviews) in all aspects of result research in the field of science/engineering: terrestrial and marine (geomatics, geophysics, geography, geology, geographic information systems, remote sensing, cartography, oceanography, hydrography, marine science and technology).
Arjuna Subject : -
Articles 211 Documents
Analysis Of Occupational Safety And Health (Osh) Risk Management In The Advanced Phase Of A High-Rise Building Construction Project Eko Budi Utomo; Budi Witjaksana; Jaka Purnama
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.12940

Abstract

This study aims to analyze the implementation of Occupational Safety and Health (OSH) risk management during the advanced stages of high-rise building construction projects. This stage is known for its high level of complexity, as it involves various concurrent work activities with overlapping risks. The research method employed is a descriptive qualitative approach through field observations and a literature review. Workplace accident analysis was conducted using the Injury Frequency Rate (IFR) and Injury Severity Rate (ISR) indicators, supported by a Poisson distribution approach to predict the likelihood of accidents. Additionally, risk identification and assessment were performed based on the AS/NZS 4360:2004 standard, considering both the likelihood and impact of risks. The research results indicate that during the observation period, no workplace accidents were recorded, with an IFR of 0, indicating an extremely low accident frequency rate. Meanwhile, the ISR value indicates a small number of lost workdays due to minor incidents. The implementation of the Occupational Safety and Health Management System on this project was assessed as having been carried out well and in accordance with applicable regulations, particularly regarding hazard identification, risk control, and preparedness for emergency conditions. These findings indicate that consistent and integrated risk management can create a safe work environment and support the smooth implementation of projects
Application of the Least Cost Analysis Method in Optimizing the Time and Cost of Mechanical Earthwork in Construction Projects Aris Lukmanul Hakim; Budi Witjaksana; Jaka Purnama
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13013

Abstract

Penelitian ini bertujuan untuk menganalisis penerapan manajemen risiko Keselamatan dan Kesehatan Kerja (K3) pada tahap-tahap akhir proyek konstruksi gedung bertingkat tinggi. Tahap ini dikenal memiliki tingkat kompleksitas yang tinggi, karena melibatkan berbagai aktivitas kerja yang berlangsung bersamaan dengan risiko yang saling tumpang tindih. Metode penelitian yang digunakan adalah pendekatan kualitatif deskriptif melalui pengamatan lapangan dan tinjauan pustaka. Analisis kecelakaan kerja dilakukanmenggunakan indikator Tingkat Frekuensi Cedera (IFR) dan Tingkat Keparahan Cedera (ISR), didukung oleh pendekatan distribusi Poisson untuk memprediksi kemungkinan terjadinya kecelakaan. Selain itu, identifikasi dan penilaian risiko dilakukan berdasarkan standar AS/NZS 4360:2004, dengan mempertimbangkan baik kemungkinan maupun dampak risiko. Hasil penelitian menunjukkan bahwa selama periode pengamatan, tidak ada kecelakaan kerja yang tercatat, dengan IFR sebesar 0, yang menunjukkan tingkat frekuensi kecelakaan yang sangat rendah. Sementara itu, nilai ISR menunjukkan jumlah hari kerja yang hilang yang relatif kecil akibat insiden minor. Penerapan Sistem Manajemen Keselamatan dan Kesehatan Kerja pada proyek ini dinilai telah dilaksanakan dengan baik dan sesuai dengan peraturan yang berlaku,terutama terkait identifikasi bahaya, pengendalian risiko, dan kesiapan terhadap kondisi darurat. Temuan ini menunjukkan bahwa manajemen risiko yang konsisten dan terintegrasi dapat menciptakan lingkungan kerja yang aman danmendukung pelaksanaan proyek yang lancar
Quay Layout Planning Of Beaco Port Viqueque District, Timor-Leste Muhamad Kemal Idris; Benny Heriyanto; Nilton Fernandes; Marito Menezes; Wahyu Adi Setyaningsih
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13302

Abstract

Timor-Leste shares the island of Timor with Indonesia and is strategically located near Australia, giving it significant maritime potential for both domestic connectivity and international shipping logistics. To support maritime transportation and national economic growth, the Government of Timor-Leste, through the Ministry of Transport and Communications, plans to develop and upgrade several port facilities, including Beaco Port. Therefore, a jetty layout plan that meets technical planning standards and operational requirements is required. This study focuses on the planning and design of a jetty structure for vessels with a capacity of 1000 DWT. The planning process includes site selection, determination of quay type and dimensions, quay basin, navigation channel, turning basin, causeway dimensions, fender and bollard specifications, as well as the spacing between fenders and bollards. The analysis was conducted using several software packages, including Microsoft Excel, WR Plot, ODV (Ocean Data View), MIKE Zero, and AutoCAD. The results indicate that Site 2, located at coordinates 8°56'53.43” S and 126°28'2.08” E, was selected as the optimal location. The proposed design consists of a jetty-type quay with dimensions of 122.6 m in length and 32.5 m in width, a one-way navigation channel with a depth of 10 m, width of 46.4 m, and length of 200 m, a turning basin with a diameter of 201 m, and a jetty basin with a depth of 6 m, length of 100.5 m, and width of 20 m. The selected fender type is V-SAN 800H × 1000L with 10 m spacing between fenders and WF500 fender piles, while the bollard system uses TEE BOLLARD with a capacity of 100 kN and 15 m spacing between bollards.
Variability of Sea Surface Temperature and Salinity during Super El Nino 2015 and Strong La Nina 2022 in Southern Java Waters Agitha Saverti Jasmine; Erik Munandar
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.6956

Abstract

The southern waters of Banten and West Java constitute a seasonal coastal upwelling pathway that is highly sensitive to global climate variability. This study aims to analyze and compare the spatial-temporal patterns of sea surface temperature (SST) and sea surface salinity (SSS) during two contrasting climate extremes: the Super El Niño (2015) and the Triple-Dip La Niña (2022). Daily gridded data with a spatial resolution from the Copernicus Marine Service (CMS) were processed via cloud computing using the Xarray, Matplotlib, and Cartopy libraries. The results demonstrate a pronounced interannual contrast during the Southeast Monsoon (July-October). At the peak of El Niño (September 2015), an intensification of robust upwelling occurred, characterized by an extreme drop in minimum SST to 22–24°C and a sharp increase in SSS to 33.8–34.5 psu, driven by reduced freshwater flux and the displacement of deep, saline water masses. Otherwise, during the La Niña phase (2022), upwelling weakened significantly; SST remained warm, ranging from 27-28°C (4-5°C warmer than in 2015), while SSS remained low at 32.6–33.4 psu due to enhanced precipitation and freshwater transport through the Sunda Strait and the Indonesian Throughflow (ITF) circulation. These dynamics underscore the pivotal role of ENSO teleconnections and monsoonal winds in modulating the variability within the study area.
A Prospects for Management of Four Islands Post-Conflict in the Aceh-North Sumatra Region Nezeliana Putri; Bambang Syaeful Hadi; Suhadi Purwantara; Pan Surya Handika; Umri Rahman Efendi
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.9976

Abstract

The resolution of the dispute over four islands—Mangkir Gadang Island, Mangkir Ketek Island, Lipan Island, and Panjang Island—between Aceh Province and North Sumatra Province marks a new chapter in post-conflict maritime governance in Indonesia. This study aims to analyze the prospects for the management of these four islands following the territorial boundary agreement reached on June 17, 2025, covering geopolitical implications, strategic potential, security stability, and opportunities for marine environmental protection. This study employs a qualitative approach using descriptive analysis through document review, spatial data interpretation based on Google Earth, and a policy review of official documents from the Ministry of Home Affairs (KEMENDAGRI), Presidential Decrees, and relevant academic literature. The results of this study identify four key post-conflict management prospects, namely: (1) collaborative management of fishery resources between the two provinces; (2) the development of marine ecotourism based on the conservation of marine biodiversity; (3) enhancing local security stability through inter-regional dialogue forums; and (4) strengthening inter-regional cooperation in the protection of coastal ecosystems and integrated marine zoning. This study contributes to the development of a post-conflict small island governance model that can be replicated to resolve similar administrative boundary disputes in Indonesia, while also strengthening a framework for sustainable, cross-provincial collaborative maritime area management.
Numerical Modeling Analysis of Tsunami Inundation in the Coastal Area of Ngadirojo, Pacitan Regency Muhamad Rakif Panguale; Muhammad Fiky Izzulhaq; Chezta Ahmad Muzakky
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13025

Abstract

Coastal communities along the southern coast of Java are increasingly vulnerable to tsunami hazards due to active seismotectonic conditions in the Indian Ocean. This study presents a comprehensive numerical modeling analysis of the tsunami inundation map in the Ngadirojo coastal area of Ngadirojo Subdistrict, Pacitan Regency, East Java. The research objectives are to simulate potential tsunami scenarios, map inundation extents, and assess coastal vulnerability for disaster risk reduction planning. The Cornell Multi-grid Coupled Tsunami Model (COMCOT) is employed to simulate tsunami propagation and coastal inundation using high-resolution bathymetric and topographic data. The modeling incorporates nested grid systems with spatial resolutions ranging from 1250 m in deep ocean to 10 m in nearshore areas. The study provides a detailed analysis using numerical modeling techniques for predicting tsunami wave heights, inundation distances, and arrival times with a single earthquake source scenario of maximum magnitude Mw 8.8 in the Pacitan coastal region. Results indicate that tsunami waves could reach a maximum height of 16.4 m, with inundation extending up to 3.98 km inland and arrival times as short as 30 minutes. The derived tsunami hazard index highlights extensive high-risk zones along Soge and Taman Ngadirojo Beaches. The study provides essential scientific data to help local authorities develop effective evacuation strategies, early warning systems, and coastal protection measures, and significantly contributes to tsunami risk assessment methodologies for similar coastal environments in Indonesia and the Indo-Pacific region.
Accuracy Assessment of Static GNSS Positioning: A Comparison between Geodetic GNSS and Low-Cost Smartphone-Based GNSS Using Geo++ RINEX Een Lujainatul Isnaini; Septa Eka Putri
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13203

Abstract

The Global Navigation Satellite System (GNSS) has been widely applied in various positioning applications, ranging from navigation to high-precision geodetic surveying. Recent advances in smartphone technology have enabled the collection of raw GNSS observations using low-cost devices, offering an affordable alternative for positioning applications. One such solution is the Geo++ RINEX Logger application, which records raw GNSS observations in the Receiver Independent Exchange Format (RINEX) for post-processing. This study evaluates the positioning accuracy of a smartphone-based Geo++ RINEX Logger compared with a geodetic GNSS receiver using the static relative positioning method under different observation durations and processing approaches. Observations were conducted at the ITERA benchmark under open-sky conditions with observation durations of 5, 15, 30, 45, and 60 minutes and a 1-second sampling interval. The data were processed using commercial GNSS software (offline) and the BIG online processing service (nrtk.big.go.id) based on the WGS-84 datum. The results indicate that positioning precision improved with increasing observation duration, with the 60-minute observations producing the smallest standard deviations. Geo++ RINEX Logger achieved centimeter-to-decimeter precision but lower accuracy than the geodetic GNSS receiver due to the limitations of single-frequency observations and sensitivity to baseline length and satellite geometry. These findings demonstrate that Geo++ RINEX Logger is a promising low-cost solution for educational, practical, and non-high-precision surveying applications.
Assessment of Cross-Section Interval Variations for Earthwork Volume Estimation on Straight and Curved Road Alignments Muhammad Afan Akbar; Meraty Ramadhini; Ongky Anggara
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13204

Abstract

Cross-sectional interval variations on cut and fill volume estimation for straight and curved road alignments. Unlike previous studies that focused on a single road geometry, this study compares straight and curved road sections under identical survey conditions. Data were collected using an Electronic Total Station with cross-sectional intervals of 10 m, 25 m, and 50 m, representing dense, moderate, and sparse survey sampling scenarios commonly applied in road construction projects. Earthwork volumes were calculated using the Average End Area method based on SWDTM, Microsoft Excel, and AutoCAD Civil 3D. A paired sample t-test was applied to evaluate the significance of volume differences among interval scenarios. The results show that larger cross-sectional intervals produced greater discrepancies in cut and fill volume calculations. On straight road sections, estimated fill volumes ranged from 237.050 m³ to 254.250 m³, while on curved road sections they ranged from 333.100 m³ to 360.250 m³. Statistical analysis indicated that all calculated t-values were lower than the critical t-value at the 95% confidence level, suggesting that interval variations did not produce statistically significant differences in calculated volumes. However, wider intervals generated larger practical discrepancies and relative errors. These findings indicate that a 25 m cross-sectional interval provides a practical balance between survey efficiency and earthwork volume estimation reliability for road construction projects.
Determining Priority Strategies for Meteorological Drought Disaster Mitigation in Bima Regency, West Nusa Tenggara Tanti Prasetya Prima Dewi; Yohana Noradika Maharani; Johan Danu Prasetya; Eko Teguh Paripurno; Eko Murdiyanto
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13491

Abstract

Drought is a recurring disaster with increasing frequency in Bima Regency, Indonesia. Budget efficiency measures have reduced the number of drought mitigation programs and beneficiaries, limiting the local government's ability to implement all proposed mitigation strategies simultaneously. This study aims to establish a priority-based decision-making framework for implementing meteorological drought mitigation strategies, thereby supporting more effective and targeted disaster risk reduction. The Analytic Hierarchy Process (AHP) was employed using Expert Choice 11 to evaluate mitigation priorities based on a hierarchical structure consisting of objectives, criteria, sub-criteria, and alternatives. Data were collected from 30 experts representing the Regional Disaster Management Agency (BPBD), the Meteorological, Climatological, and Geophysical Agency (BMKG), the Agriculture Office, the Public Works and Spatial Planning Office (PUPR), and drought-affected communities. The results indicate that technical feasibility and effectiveness are the most influential criteria in determining mitigation priorities. The final AHP synthesis ranks education and public awareness programs as the highest priority (17.8%), followed by groundwater well drilling and water pumping systems (16.9%), and rehabilitation and optimization of irrigation networks (16.7%). These findings provide a practical basis for integrating prioritized drought mitigation strategies into regional development planning, including the Regional Government Work Plan (RKPD), Strategic Plans (Renstra), the Regional Development Information System (SIPD), and the Disaster Contingency Plan (Renkon), ensuring more sustainable and effective meteorological drought risk management in Bima Regency.
Validation of Weather Radar-Based Rainfall Estimation to Support Flood Mitigation Strategies in the Bima Region Satria Topan Primadi; Yohana N Maharani; Teddy A Cahyadi; Awang Hendrianto Pratomo; Arif Rianto Budi Nugroho
Journal of Applied Geospatial Information Vol. 10 No. 1 (2026): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v10i1.13501

Abstract

Flood is one of the most frequent hydrometeorological disasters in Bima, West Nusa Tenggara, Indonesia. Although the C-Band weather radar operated by the Meteorological, Climatological, and Geophysical Agency (BMKG) has been utilized for weather monitoring and early warning, the accuracy of its rainfall estimation products has not been comprehensively validated under the complex topographic conditions of the region. This study aims to evaluate the performance of four weather radar rainfall products, namely Constant Altitude Plan Position Indicator (CAPPI), Column Maximum (CMAX), Rain Tracking (RTR), and Surface Rainfall Intensity (SRI), by comparing radar-derived rainfall estimates with in-situ observations from Automatic Rain Gauge (ARG), Automatic Weather Station (AWS), and Automatic Agroclimate Weather Station (AAWS). The analysis was conducted across three radar distance zones (0–20 km, 20–50 km, and 100–150 km) to investigate the influence of radar range on rainfall estimation accuracy. Model performance was evaluated using Root Mean Square Error (RMSE), Mean Absolute Error (MAE), Receiver Operating Characteristic (ROC), and the Youden Index to determine the optimal rainfall and reflectivity thresholds for flood early warning. The results showed that CAPPI achieved the lowest RMSE (2.578 mm h⁻¹) within the 0–20 km zone, whereas CMAX provided the highest estimation accuracy at greater radar distances. ROC analysis further identified locally optimized rainfall warning thresholds ranging from 0.053 to 0.716 mm h⁻¹, depending on the radar distance zone, thereby improving the discrimination between flood and non-flood events. These findings contribute to improving radar-based rainfall estimation and support the development of a more reliable impact-based flood early warning system in tropical regions with complex terrain.