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All Journal Indonesian Journal of Geospatial Jurnal Sosioteknologi Journal of Social Research Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI)
Eka Djunarsjah
Institut Teknologi Bandung
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Social Sciences

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Kajian Standar Penilaian Kelayakan Pelabuhan Makassar Dalam Mendukung Konsep Tol Laut Eka Djunarsjah; Dwi Wisayantono; Andi Putra Parlindungan
Indonesian Journal of Geospatial Vol 7 No 2 (2018)
Publisher : Indonesian Journal of Geospatial

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Konsep Tol Laut merupakan langkah awal Pemerintah Indonesia saat inidalam upaya menjadikan Indonesia sebagai negara maritim. Salah satu yang menjadi bagian penting dalam terlaksananya Konsep Tol Laut ini adalah kelayakan pelabuhan dalam menunjang Konsep ini. Penelitian ini ditujukan untuk melihat kesiapan atau kelayakan pelabuhan dalam mendukung Konsep Tol Laut tersebut, dengan studi kasus Pelabuhan Makassar. Metodologi penelitian yang digunakan adalah studi literatur untuk menentukan parameter kelayakan, pengumpulan data yang dibutuhkan berupa : data induk pelabuhan, peta laut, data fisik kapal, dan Daftar Suar Indonesia (DSI), serta analisis kondisi pelabuhan menggunakan metode komparasi. Parameter yang digunakan pada penelitian adalah lokasi pelabuhan, alur pelayaran, dan Sarana Bantu Navigasi Pelayaran (SBNP). Kondisi ideal untuk setiap parameter akan ditentukan untuk mendukung konsep Tol Laut, yang kemudian akan dibandingkan dengan kondisi Pelabuhan Makassar saat ini. Hasil yang diperoleh dari studi ini menyimpulkan bahwa Pelabuhan Makassar layak berdasarkan parameter lokasi dan SNBP, namun berdasarkan parameter alur pelayaran dinilai belum layak karena kondisi kedalaman yang masih belum memenuhi persyaratan.
Determination of Sea Boundaries from the Perspective of Regional Autonomy in Administrative Region of the Republic of Indonesia Eka Djunarsjah
Jurnal Sosioteknologi Vol. 18 No. 2 (2019)
Publisher : Fakultas Seni Rupa dan Desain ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/sostek.itbj.2019.18.2.9

Abstract

Although the Djuanda Declaration had proclaimed on December 13th 1957, it was not until the administration of the Republic of Indonesia constitutes that the boundaries of the state were established through the Act (UU) in 2000. Despite several legislations related to the sea boundary, namely: Law on Continental Shelf of Indonesia (1973), Law on Exclusive Economic Zone of Indonesia (1983), and Law on Indonesian Waters (1996). The Indonesian administration, for the first time in 1999, decreed a Law on the Regional Government, which states the existence of regional authority in managing the sea area as far as 12 nautical miles from the coastline of each region. This contribution examines the extent of the relationship between the determinations of the boundary of the territorial waters of the Unitary State of the Republic of Indonesia (NKRI) based on the United Nations Convention of the Law of the Sea (UNCLOS) in 1982 with the determination of the regional sea boundary that refers to the Law on Regional Government. The method of study is a correlation analysis between laws and regulations related to state and regional sea boundaries. The results of the study indicate that the determination of the state sea boundary using baseline points (base points) refers to the position of the low water line; while for the sea boundary area the reference used is the coastline at the highest tide position. Another thing that is revealed, the integrity of NKRI sovereignty will be difficult to be realized if the determination of the sea border area of NKRI based on Regional Autonomy is not realized.
Study of Legal and Technical Aspect on Sedimentation Management in Indonesia Seas Muhammad Ilman Hadiid; Andi Febrianto; Eko Prasetiyo; Ayi Tarya; Eka Djunarsjah
Journal of Social Research Vol. 5 No. 2 (2026): Journal of Social Research
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/josr.v5i2.2993

Abstract

Dredging and marine sand export activities in Indonesia have raised concerns about their impacts on marine environmental quality and regulatory certainty in sedimentation management. This study examines the legal and technical aspects of marine sedimentation management policies, focusing on the implementation of Government Regulation No. 26 of 2023 on Marine Sedimentation Management and Government Regulation No. 31 of 2021 on Shipping. The legal review evaluates the coherence of these regulations with higher legal frameworks, including Law No. 32 of 2014 on Marine Affairs, the Job Creation Law, the United Nations Convention on the Law of the Sea (UNCLOS 1982), and international standards from the Oslo-Paris (OSPAR) Convention. The analysis reveals that PP 26/2023 and PP 31/2021 still exhibit vertical inconsistencies, overlapping institutional mandates, and limited alignment with international marine governance principles. Technically, this study analyzes changes in water turbidity using Sentinel-2 satellite imagery and the Normalized Difference Turbidity Index (NDTI) across four priority areas: Pulau Karimun Besar, Demak Regency, Kutai Kartanegara Regency, and Surabaya City. The findings indicate a strong, statistically significant correlation between NDTI values and marine sand export volume in Pulau Karimun Besar (r = 0.99; p = 0.0005), while other locations show weaker, non-significant correlations. These results highlight the need to integrate legal reform with spatially informed technical monitoring to enhance sustainable sedimentation management in Indonesia’s coastal waters.
Analisis Spasial dan Temporal Perubahan Luas Gletser Puncak Jaya Menggunakan Citra Sentinel-2 untuk Prediksi Kepunahan Gletser Muhammad Zaidan Nafis; Amira Khairunissa; Muhammad Rizky Perdana; Eka Djunarsjah
Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Vol. 4 No. 2 (2025): September 2025
Publisher : LKP KARYA PRIMA KURSUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62712/juktisi.v4i2.429

Abstract

Perubahan iklim global menyebabkan penyusutan gletser tropis yang signifikan, menjadikan Puncak Jaya, gunung tertinggi di Oseania, sebagai indikator kritis. Penelitian ini bertujuan menganalisis perubahan luas Gletser Puncak Jaya dari tahun 2017 hingga 2024 menggunakan citra Sentinel-2 dan Normalized Difference Snow Index (NDSI), serta memproyeksikan waktu kepunahannya. Metodologi melibatkan akuisisi citra Sentinel-2 dengan minimal tutupan awan, perhitungan NDSI untuk delineasi luas gletser, dan prediksi menggunakan model regresi linier serta eksponensial. Hasil menunjukkan penyusutan luas gletser yang drastis dan konsisten, kehilangan sekitar 69.5% dari luas awalnya (47.67 hektar pada 2017 menjadi 14.51 hektar pada 2024). Gletser utara mengalami fragmentasi, sementara gletser selatan hampir menghilang. Penurunan pesat tercatat pada periode 2018-2019 (terkait El Niño) dan 2021-2022 (terkait La Niña yang kompleks). Prediksi regresi linier (skenario pesimis) menunjukkan kepunahan pada 22 April 2026. Sementara itu, regresi eksponensial (skenario optimis, luas <1 hektar) memprediksi kepunahan pada 6 Oktober 2044. Rentang waktu ini menggarisbawahi keniscayaan kepunahan gletser Puncak Jaya dalam beberapa dekade mendatang, menekankan urgensi mitigasi perubahan iklim.
Spatial Analysis of Potential Fishing Zones (PFZ) for Tuna in Parangtritis Waters Based on Sea Surface Temperature, Chlorophyll-a, and Bathymetry Raden Mas Cessar Surya Adiputra; Eka Djunarsjah; Fajrun Wahidil Muharram; Andika Permadi Putra
Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Vol. 4 No. 2 (2025): September 2025
Publisher : LKP KARYA PRIMA KURSUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62712/juktisi.v4i2.470

Abstract

Parangtritis possesses significant fisheries potential, particularly for tuna; however, this potential remains underutilized due to poorly managed information on fishing grounds. This study aims to identify Potential Fishing Zones (PFZ) for tuna in Parangtritis waters based on oceanographic parameters, namely sea surface temperature (SST), chlorophyll-a concentration, and bathymetry. The analysis utilizes MODIS Aqua satellite imagery (July 2021–June 2022) and GEBCO bathymetric data, processed spatiotemporally using Geographic Information Systems (GIS). The results indicate that PFZ were detected only in August, September, and October 2021, as well as April 2022, with a total of 55 identified points. The highest distribution occurred in September 2021, coinciding with chlorophyll-a concentrations reaching 25.378 mg/m³ and SSTs falling within the optimal range of 25.17–25.95°C, conditions that enhance primary productivity and support the base of the tuna food web. The PFZ points were generally located more than 3.5 nautical miles offshore at depths of approximately 100 meters. These findings reveal an ecological relationship among SST, chlorophyll-a, and bathymetry in shaping the habitat preferences of tropical tuna. This approach demonstrates the effectiveness of remote sensing and GIS-based oceanographic data in predicting tuna habitats, supporting small- to medium-scale fisheries, and integrating modern technology with local ecological knowledge.
Co-Authors Amira Khairunissa Andi Febrianto Andi Putra Parlindungan Andika Permadi Putra Ayi Tarya Dwi Wisayantono Eko Prasetiyo Fajrun Wahidil Muharram Muhammad Ilman Hadiid Muhammad Rizky Perdana Muhammad Zaidan Nafis Raden Mas Cessar Surya Adiputra