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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Jurnal Kelautan Tropis Laporan Upaya Nyata Inovasi Ilmu Komputer (LUNIK)
Akhmad Tri Prasetyo
Department Of Marine Sciences, Faculty Of Fisheries And Marine Sciences, Universitas Diponegoro
Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Library & Information Science

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Modeling on 137Cs Radioactive Dispersion in Gosong Coast as The Candidate Location for Nuclear Power Plant Akhmad Tri Prasetyo; Muslim Muslim; Heny Suseno
Jurnal Kelautan Tropis Vol 24, No 3 (2021): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v24i3.11058

Abstract

The study of radioactive dispersion in the ocean should be conducted to prepare the construction of nuclear power plant (NPP) in Gosong Coast, West Kalimantan. This study estimated the distribution of 137Cs radioactive from various scenarios of radioactive waste dumping if nuclear emergency is occurred during NPP’s operation. These scenarios were distinguished based on their volume discharges of radioactive waste into the ocean, included 10 m3 (Scenario I), 50 m3 (Scenario II), and 100 m3 (Scenario III).  Model dispersions were constructed for 15 days by Delft3D-Flow module. The simulation showed that ocean current directions were not significantly different among spring and neap tide, instead the ocean current during the spring period dominantly increased rather than neap period. Ocean currents at Gosong Coast flowed parallel to the shoreline towards Singkawang Coastal Area during ebb tide. Meanwhile, during flood tide, ocean currents at Gosong Coast flowed offshore through Burung Archipelagic. The dispersed model showed the distribution of 137Cs radioactive for 15 days reaching to coastal areas of Burung Archipelagic, Singkawang, and Southern Sambas Coast. Each scenario of the disposal system did not influence the marine pollution of the West Kalimantan Sea.
Prevalensi Penyakit Karang di Pulau Menjangan Besar Karimunjawa Nining Nursalim; Agus Trianto; Muhammad Syaifudien Bahry; Dwi Haryanti; Raden Ario; Raja Aditia Sahala Siagian; Akhmad Tri Prasetyo
Jurnal Kelautan Tropis Vol 25, No 1 (2022): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v25i1.13208

Abstract

Coral disease can cause coral damage on Menjangan Besar Island, Karimunjawa. Floating net cages adjacent to coral reefs can affect coral health. Floating net cages can affect water quality by adding nutrients, such as nitrate (205.6 and phosphate 39.2/ton fish production). Nutrients and environmental factors can trigger and cause coral disease. The purpose of this study was to determine the effect of the existence of floating net cages on the prevalence of coral disease on Menjangan Besar Island, Karimunjawa. The research was conducted using a survey method, data collection using a proportional method, the results of the data will be analyzed descriptively. The results of the study found Black Band Disease, Brown Band Disease, Ulcerative White Pox, White syndrome, Yellow Bloch Disease, Pigmentation responses, White Plague and White Band Disease. Water parameters such as temperature ranged from 30.71-30.750C, salinity 32.7-33.20/00, current velocity 0.03-0.06 m/s, nitrate 0.586-1,128 mg/L and phosphate 0.064-0.133 mg/ L. The most common disease is Ulcerative White Pox. The prevalence of coral disease is influenced by the presence of floating net cages, it can be seen in A1, A2 and A3 with prevalence values (39.85, 43.61 and 33.14) which are higher than B1 and B2 (14.41 and 10,6).  Penyakit karang dapat menyebabkan kerusakan karang di Pulau Menjangan Besar Karimunjawa. Karamba jaring apung yang berdampingan dengan terumbu karang dapat mempengaruhi kesehatan karang. Karamba jaring apung dapat mempengaruhi kualitas air dengan menambah nutrien, seperti Nitrat (205,6 dan fosfat 39,2/ton produksi ikan. Nutrien dan faktor lingkungan dapat menjadi pemicu dan penyebab penyakit karang. Tujuan penelitian ini untuk mengetahui pengaruh keberadaan karamba jaring apung terhadap prevelensi penyakit karang di Pulau Menjangan Besar Karimunjawa. Penelitian dilakukan dengan metode survei, pengambilan data dengan metode porposif, hasil data akan disanalisis secara deskiptif. Hasil penelitian ditemukan penyakit Black Band Disease, Brown Band Disease, Ulcerative White Pox, White syndrome, Yellow Bloch Disease, Pigmentation responses, White Plague dan White Band Disease. Parameter perairan  seperti temperatur berkisar 30,71-30,750C, salinitas 32,7-33,20/00, kecepatan arus 0,03-0,06 m/s, nitrat  0,586-1,128 mg/L dan fosfat 0,064-0,133 mg/L. Penyakit paling banyak ditemukan adalah Ulcerative White Pox. Prevelensi penyakit karang dipengaruhi oleh keberadaan karamba jaring apung, dapat terlihat pada A1, A2 dan A3 dengan nilai prevalensi (39,85, 43,61 dan 33,14) yang lebih tinggi jika dibandingkan dengan B1 dan B2 (14,41 dan 10,6).
Safety Assessment of Ocean Current in Pantar Strait for Marine Tourism Prasetyo, Akhmad Tri; Patriadi, Andi; Ahsin, Awaludin; Nurhidayat, Nurhidayat; Purwanto, Budi; Sobaruddin, Dyan Primana; Muslim, Muslim; Hendri, Muhammad; Hermialingga, Septi; Kurniasih, Eka Maya
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 4 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.4.530-542

Abstract

The Pantar Strait with its coral reef ecosystem has encouraged many tourists to dive since the last decade. At least, ten coral reef ecosystem sites in Pantar Strait have been indicated as having potential for marine tourism, such as Munaseli Beach, Obisinga Beach, Umangdang Beach, Alor Eco Dive Resort, Ternate Island, Bakalang Beach, Pura Diving Spot, Nuhakepa Diving Spot, Pasir Putih Beach, and Savu Alor. This study illustrated the annual dynamics of ocean currents in Pantar Strait, subsequently assessing the safety rate of commercial diving at those tourism sites in each season. A three-dimensional hydrodynamic model was generated by the Delft3d flow module to illustrate the annual ocean current dynamic in the Pantar Strait. The safety assessment for marine tourism was classified into 3 levels (safe, alert, and dangerous). Ocean currents exceed maximum velocities in the west season. Various marine tourism sites close to steep slopes were not recommended for commercial diving. They are Munaseli Beach, Obisinga Beach, Pura Diving Spot, and Pasir Putih Beach. These sites experienced an increase in average currents that exceeded the safe threshold each season. Alor Eco Dive Resort was designated as the safest marine tourism, which showed a safe level for either average or maximum ocean currents in each season. Nuhakepa Diving Spot was designated as the second safest marine tourism. Several tourist sites that showed the danger of commercial diving in the west season were Umangdang Beach and Savu Alor. Many tourism sites showed an alert current for commercial diving in Springtide. Therefore, tourists are advised to avoid diving during the spring tide.
PENINGKATAN BRANDING DESA WISATA SUNGSANG IV MELALUI PLANG DENAH LOKASI SEBAGAI IKON PROMOSI : IMPROVING BRANDING OF SUNGSANG IV TOURIST VILLAGE THROUGH LOCATION PLAN SIGN AS A PROMOTION ICON Ningsih, Ellis Nurjuliasti; Fauziyah; Agustriani, Fitri; Nur, Muhamad`; Prasetyo, Akhmad Tri
Laporan Upaya Nyata Inovasi Ilmu Komputer Vol. 3 No. 01 (2025)
Publisher : FMIPA Unila

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

Abstract

Desa Sungsang IV dikenal masyarakat sebagai salah satu daerah tujuan wisata di Kabupaten Banyuasin. Penggunaan plang denah yang efektif tidak hanya membantu pengunjung menavigasi area wisata dengan mudah, tetapi juga menyediakan informasi penting tentang lokasi-lokasi kunci seperti atraksi wisata, fasilitas umum, dan titik penting lainnya. Adanya desain yang menarik dan informatif, plang denah lokasi ini dapat menjadi bagian integral dari branding desa, menciptakan kesan pertama yang positif bagi pengunjung. Pengabdian kepada masyarakat bertujuan meningkatkan pengetahuan masyarakat mengenai icon promosi melalui spot foto dan denah lokasi untuk meningkatkan sektor wisata di Desa Sungsang IV Kabupaten Banyuasin Sumatera Selatan. Dilakukannya survei lapangan agar mengetahui lokasi spot foto dan membuat design plang yang diberikan peta denah lokasi desa, serta pemasangan plang dilakukan atas kerjasama dengan masyarakat setempat. Pemasangan plang di Desa Sungsang IV memberikan kemudahan bagi pengunjung untuk mengakses lokasi dan fasilitas di desa wisata. Kegiatan ini juga meningkatkan identitas dan promosi desa wisata, yang mendukung daya tarik pariwisata lokal yang diharapkan berdampak positif terhadap perkembangan ekonomi dan sosial masyarakat.
Co-Authors Agus Trianto Ahsin, Awaludin Budi Purwanto Dwi Haryanti Eka Maya Kurniasih, Eka Maya FAUZIYAH Fitri Agustriani Heny Suseno Hermialingga, Septi Muhammad Hendri Muhammad Syaifudien Bahry Muslim Muslim Muslim Muslim Ningsih, Ellis Nurjuliasti Nining Nursalim Nur, Muhamad` Nurhidayat Nurhidayat Patriadi, Andi Raden Ario Raja Aditia Sahala Siagian Sobaruddin, Dyan Primana