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Rizki Adi Nugroho
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INDONESIA
Jurnal Riset dan Rekayasa Kelautan
Published by Badan Pengkajian dan Penerapan Teknologi
ISSN : -     EISSN : 27237338     DOI : -
Core Subject : Science, Social,
Chemistry Computer Science & IT Earth & Planetary Sciences Environmental Science Physics
Oseanika: Jurnal Riset dan Rekayasa Kelautan, the Journal of Marine Research and Engineering, is a bilingual journal (Indonesian and English) published two times a year which is in April and October and provide a scientific publication medium for researchers, engineers, practitioners, academicians, and observers in the field related to marine science and technology. This journal is a media to actualize the thinking, ideas and results of research and engineeringand thus accepts original papers, review articles, case studies, and short communications. The articles published are peer-reviewed by no less than two referees, and cover various marine science and technology subjects related to the field of oceanography, geology and geophysic, environment, as well as life sciences in general.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 35 Documents
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Back Cover Vol 1, No 2 (2020) Oseanika Rizki Adi Nugroho
Oseanika Vol. 1 No. 2 (2020): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Desember 2020
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v1i2.4633

Abstract

REKONSTRUKSI PALEOBATIMETRI DAN PENENTUAN BATAS PENGENDAPAN BERDASARKAN KELIMPAHAN FORAMINIFERA: STUDI KASUS PADA SEDIMEN INTI SO189/2-04KL DI CEKUNGAN BENGKULU Taufan Wiguna; Sri Ardhyastuti
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.4866

Abstract

[Paleobathymetry Reconstruction and Depositional Boundary Based on Foraminifera Abundance: a Case Study on So189/2-04kl Sediment Core in Bengkulu Basin] Paleobathymetry reconstruction and deposition boundary determination in an oil and gas industry has been used widely to study geological history on a basin. Those approaches could be done by microfossil proxy, including use of foraminifera. Using the foraminifera abundance and P/B ratio, this study tries to reconstruct paleobathymetry and determine depositional boundary on sediment core SO189/2-04KL 600-900 cmbsf in Bengkulu Basin. As a result, both parameters show paleobathymetry changes between outer neritic and inner bathyal. Inner bathyal only appear on interval 780-785 cmbsf. Maximum flooding surface appear on depth 640, 736.5, and 825 cmbsf while transgressive surface appears on depth 701, 765, and 890 cmbsf. Keywords: paleobathymetry, maximum flooding surface transgressive surface, P/B ratio, foraminifera abundance
STUDI PENENTUAN LOKASI BUOY TSUNAMI DI SAMUDERA INDIA SELATAN JAWA-BALI Dwi Haryanto; Adam Budi Nugroho; Muhamad Irfan; Yudo Haryadi
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.4874

Abstract

[Study for Determination of Tsunami Buoy Location in Indian Ocean of Southern Java-Bali]. Indonesia is  located on the border of three tectonic plates that slide over each other, the Indo-Australian Plate, the Pacific Plate, and the Eurasian Plate. This relative movement between tectonic plates can cause tectonic earthquakes in the sea. Tectonic earthquakes at sea are one of the main causes of tsunamis in Indonesia. Ina-Buoy is a tsunami warning technology system that includes sensors installed on the seabed (ocean bottom unit (OBU)) and these sensors send signals to a surface buoy station that floats on the sea surface using a mooring system. The installation of a tsunami buoy must be in the right location and consider several parameters, namely: depth parameter, seabed gradient, and seabed material type. A study for determination of tsunami buoy locations in Southern Java-Bali based on a three-parameter assessment has resulted in three appropriate locations for tsunami buoy installation. The first locations is in southern Malang at coordinates 112°31'34”E, 9°11'41”S which has a depth of 2042m,  seabed gradient of 2° or 2.5%, and the type of seabed material is greenish ash clay with thickness of about 20 cm. The  second locations is in southern Sunda Strait at coordinates 104°00'22”E, 6°30'19”S which has a depth of 2038m , seabed gradient of 0.31° or 0.5%, and the type of seabed material is greenish ash claym with thickness of about 25 cm. While    the third location is in Southern Bali at coordinates 115°12'37.52E, 9°44'22.38S which has a depth of 4282.5m, seabed gradient 0.31° or 0.5%, and the type of seabed material is the form of ash clay with Brownish  with thickness of about 30 cm. Keywords: Tsunami buoy, sea water depth, gradient, and type of seabed material
KAJIAN STABILITAS KAPAL SEISMIK PADA KAPAL RISET BARUNA JAYA II Tris Handoyo; Rizki Adi Nugroho; Arfis Maydino Firmansyah Putra; Dinar Novandia Sunjayani
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.4920

Abstract

[Study of Ship Stability on Seismic Research Vessels - RV. Baruna Jaya II] Ship safety has become a global issue and the maritime safety commission of the IMO (International Maritime Organization) developed requirements to be accepted by the parties to the International Convention for the Safety of Life at Sea SOLAS 1974 (Safety Of Life At Sea 1974). Meanwhile, ship stability is an important factor in maintaining ship safety from shipwreck by imbalance factor. Through the inclining test and loading on the ship. This study aims to determine the stability of the ship on the KR. Baruna Jaya II as a special research vessel for seismic surveys. The results of the ship stability analysis were then compared with the general criteria for ship stability according to IMO standards and the Indonesian Classification Bureau (BKI). As a result, metacenter height and enforcement value (GZ) met the requirements according to BKI and IMO. Furthermore, in general, all ship stability tests also showed results in accordance with IMO standards. Meanwhile, some conditions that do not meet the requirements can be normalized by fully setting the ballas. Further studies are needed, especially regarding the determination of specifications and placement of fixed ballas for calculating the stability of ships with fixed ballas. Keywords:      Inclining test, ship stability, RV. Baruna Jaya II, IMO, BKI
ANALISIS LAJU DOSIS SERAP MATERIAL NORM DI SEDIMEN DASAR LAUT BANDA, SULAWESI TENGAH Ghifari Raihan Silam Siregar; Muslim Muslim; Ali Ali; Baskoro Rochaddi; Sugeng Widada; Djunaedi Muljawan; Azhar Afi
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.4936

Abstract

[Analysis of Absorbed Dose Rate for NORM Material in Sediment of Banda Waters, Central Sulawesi] Naturally occurring radioactive materials (NORM) are materials contained in the earth and generally come from several sources such as coal burning, oil and gas production, and mining. The coastal areas of the Banda water, especially along Luwuk, Morowali, and Kendari, Central Sulawesi, are areas that become locations for several activities, such as mining, oil and gas industry, and power plants. The purpose of this study is to assess the distribution of the absorbed dose rate of NORM material in the sediment of Banda water, especially along Luwuk, Morowali, and Kendari, Central Sulawesi, and to analyze its value against existing quality standards. The absorbed dose rate of  226Ra, 232Th, dan 40K were measured at 5 stations and the results are 52.53 nGy/h; 355.75 nGy/h; 45.88 nGy/h; 131.86 nGy/h; and 35.38 nGy/h. The study shows that the distribution of the absorbed dose rate was influenced by the activities of the NORM-producing industry close to the location of the measured station. Marine current patterns and bathymetry have slight effect in this study area. The risk quotient of the absorbed dose rate is still <1 so that it indicates that the risk to organisms around the waters is still low. Keywords:      NORM, Absorbed Dose Rate, Radium, Thorium, Potassium, Banda Sea
TINJAUAN TEKNIS PENEMPATAN SISTEM MOORING BUOY DAN OBU INA-TEWS DI DASAR LAUT Muhamad Irfan; Yudo Haryadi; Dwi Haryanto; Alfi Rusdiansyah
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.4952

Abstract

[Technical Review of the Placement Mooring Buoy System and OBU Ina-TEWS on the Seabed] The development of tsunami early warning system technology has been carried out by BPPT since 2006. In addition to its development, BPPT has a duty in 2021 to install a tsunami early warning system in the ocean with a buoy platform using the Research Vessel Baruna Jaya BPPT as an ocean going survey vessel. The method of the placement a buoy platform on the seabed has to be well planned for the design, technical specifications, operational plans, and standard procedure of technical implementation. Because the buoy platform was manufactured at a high cost, and the survey operation requires a large amount of money, this system must be deployed in the ocean accurately using advanced marine survey technology. In addition, weather conditions have to be considered carefully because the location is on the open ocean. The state of ocean currents must also be carefully observed in order for the mooring buoy system to be properly installed, and the OBU system is able to detect sea level and communicate it to the surface buoy, which is subsequently send by satellite to the Ina-TOC data center in Jakarta. Keywords:      Ina-TEWS, marine survey, mooring system, buoy platform, research vessel, tsunami
Front Cover Vol 2, No 1 (2021) Oseanika: Front Cover Rizki Adi Nugroho
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.5012

Abstract

Back Cover Vol 2, No 1 (2021) Oseanika: Back Cover Rizki Adi Nugroho
Oseanika Vol. 2 No. 1 (2021): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2021
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v2i1.5013

Abstract

ESTIMASI PERFORMA SISTEM PROPULSI PADA KAPAL DENGAN TIPE CONTROLLABLE PITCH PROPELLER Dwitya Harits Waskito
Oseanika Vol. 1 No. 1 (2020): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2020
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v1i1.4050

Abstract

Perhitungan performa sistem propulsi sebuah kapal secara real-time sangat penting untuk dapat mengukur kualitas dan efisiensi dari komponen yang ada pada sistem propulsi itu sendiri. Metode yang telah dikembangkan berpusat kepada perhitungan pada kapal dengan tipe propeller Fixed Pitch Propeller, sedangkan untuk kapal dengan tipe Controllable Pitch Propeller metode tersebut kurang tepat jika digunakan karena perbedaan pitch pada setiap kecepatan. Oleh karena itu dibutuhkan suatu metode perhitungan analitik yang dapat digunakan secara efisien, mudah, akurat, dan dapat dilakukan pada saat kapal berlayar. Metode yang digunakan adalah mendapatkan data dari pitch pada propeller pada masing – masing kecepatan dimana dari data pitch tersebut dapat digunakan untuk mendapatkan nilai estimasi performa sistem propulsi dengan menggunakan metode engine- propeller matching. Metode perhitungan yang dilakukan pada tulisan ini dapat juga digunakan sebagai pembanding terhadap kondisi sistem propulsi kapal terkini dengan kondisi propulsi kapal pada saat commissioning. Kata Kunci: propulsi; Controllable Pitch Propeller;  pitch;  propeller; kapal riset
ASSESSMENT OF A LOW-COST SIDE-SCAN SONAR FOR RIVER ESTUARY UNDERWATER IMAGING Hendra Kurnia Febriawan
Oseanika Vol. 1 No. 1 (2020): Oseanika: Jurnal Riset dan Rekayasa Kelautan - Juni 2020
Publisher : Laboratory for Marine Survey Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/oseanika.v1i1.4053

Abstract

River and estuary areas commonly exhibit complex and heterogeneous habitats. Thus, revealing the distribution of riverbed morphologies could promote the area management and habitats protection. Since the remote sensing method and manual survey are limited to use, side-scan sonar performs an expectant outcome in underwater habitat imaging. In shallow water and stream areas, low-cost side-scan sonar imaging has become a notable subject of study, yet its use in Indonesia is still limited. This study describes an investigation of the use of a recreational-grade side-scan sonar for stream underwater imaging. A visual inspection and interpretation were implemented using a free-cost sonar software. The result shows some underwater objects and debris could be portrayed perfectly and this indicates that the inexpensive sonar system is appropriate to be used in shallow water and stream areas with a non-rough sea surface. It is suggested that this system could provide a satisfactory product to the users who do not require high accuracy and high resolution of riverbed imagery.Keywords: estuary, river, underwater mapping, acoustic remote sensing, low-cost, side-scan sonar.

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