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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Jurnal Kelautan Tropis Indonesian Journal of Oceanography
Jarot Marwoto
Departemen Oseanografi , Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science

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Studi Elevasi Dasar Perairan untuk Penentuan Lantai Dermaga Pelabuhan di Pelabuhan TPI Wonokerto Kabupaten Pekalongan Samudera Adi Bramastya; Jarot Marwoto; Purwanto Purwanto; Warsito Atmodjo; Elis Indrayanti
Indonesian Journal of Oceanography Vol 3, No 4 (2021): Indonesian Journal of Oceanography
Publisher : University of Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijoce.v3i4.12142

Abstract

Wilayah Kabupaten Pekalongan secara administratif berbatasan dengan Sebelah Utara Kota Pekalongan dan Laut Jawa. Wilayah Kabupaten Pekalongan merupakan tempat berbagai aktivitas salah satunya aktifitas pelabuhan perikanan. Perlu dilakukannya revitalisasi pelabuhan dari analisis pasang surut. Penelitian ini bertujuan untuk mengetahui karakteristik pasang surut, meramalkan pasang surut 5 tahun kedepan , analisis kedalaman kolam pelabuhan, dan analisis ketinggian lantai dermaga. Data yang diambil adalah data kedalaman dan data pasang surut realtime 15 piantan untuk mengetahui tipe pasang surut dan peramalan pasang surut sedangkan untuk mengetahui kondisi kolam pelabuhan dan lantai dermaga menggunakan data pasang surut yang telah diolah. Analisa pasang surut menggunakan metode Admiralty dan Worldtide diperoleh tipe pasang surut di perairan TPI Wonokerto yaitu campuran condong harian tunggal dan peramalan selama 5 tahun kedepan. Analisis kolam pelabuhan menggunakan perhitungan LLWL didapatkan nilai sebesar 2,05 m untuk kapal 10 GT dan dinyatakan layak untuk kapal bersandar. Sedangkan untuk lantai dermaga diperoleh jeda antara HHWL dan lantai dermaga sebesar 33 cm untuk metode Admiralty dan 26 cm untuk metode Worldtide sehingga dapat dikatan dermaga tersebut layak untuk tempat bersandar kapal.  
239/240Pu Dispersion Modeling for Emergencies During Nuclear Power Plant Operations in Malaysia Muslim Muslim; Sa'iyd Husayn Ahmadi; Jarot Marwoto; Heny Suseno; Yvette Agyiriba Aggrey
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 27, No 3 (2022): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.27.3.215-222

Abstract

The East Coast of Johor in Malaysia is a strategic area as a candidate site for nuclear power plants. Its location is near coastal area and is therefore convenient to use seawater as a source of cooling for power plants. This makes the East Malaysia waters, and their surroundings stand a high risk of direct radioactive contamination, especially in event of an accident. Pu is a non-conservative or reactive radionuclide that easily settles with particles and has high radiotoxicity and radiochemistry, making it very dangerous. The purpose of this study was to determine the distribution patterns of 239/240Pu releases in the waters of East Malaysia and the surrounding waters. To determine the affected areas due to 239/240Pu pollution using MIKE flow flexible mesh module and particle tracking module. The magnitude of 239/240Pu used in this model is based on the disaster in Fukushima Daiichi in 2011. This research can be used as a mitigation of 239/240Pu pollution when a nuclear reactor disaster occurs in the area around Indonesia's territorial border. Discharge of 239/240Pu was simulated during the west and east monsoons season which result in the distribution pattern following the seasonal flow pattern. During the west monsoon, the dispersion speed of 239/240Pu is four times faster than the east monsoon. The 239/240Pu distribution is predominantly towards the south, however, the contaminated area was only occurred on the coast of Johor and does not extend to the waters of Indonesia.
Co-Authors Adhi Prasojo Alfi Satriadi Anggardha Ayu Pratiwi Anindya Wirasatriya Anisa Nabila Annisa Shalsabilla Aris Ismanto Arya Muhammad Azis Rifai Baskoro Rochaddi Denny Nugroho Sugianto Dwi Haryo Ismunarti Dwi Haryo Ismunarti Dwi Haryo Ismunarti Eka Bathin Putra Eko Yulihandoko Elis Indrayanti Endang Supriyantini Gentur Handoyo Hariyadi Hariyadi Heny Suseno Heryoso Setiyono Julia Pernando Manalu Karunia Lasmarito Pintubatu Kresna Rangga Darmansyah Kunarso Kunarso Lilik Maslukah Lintang Fauzia Ichsari Melanie Rizky Hanuransyah Metrio Swandiko Muh Yusuf Muhammad Sababa Alhaq Muhammad Zainuri Murdahayu Makmur Muslim Muslim Nanda Rahmadi Nugroho Agus D Oceana Windyartanti Petrus Subardjo Purwanto Purwanto Ridho Tondang Rikha Widiaratih Sa'iyd Husayn Ahmadi Samudera Adi Bramastya Sri Yulina Wulandari Sugeng Widada Tri Wulandari Santoso Tyandi Shofian Ulha Fadika Wahyu Retno Prihatiningsih Warsito Atmodjo Yvette Agyiriba Aggrey Zamna Mujadida Zanet Dwi Aprilia