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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis East Asian Journal of Multidisciplinary Research (EAJMR) Mestaka: Jurnal Pengabdian Kepada Masyarakat Jurnal Laut Pulau Balobe: Jurnal Pengabdian Masyarakat
Marlin C Wattimena
Program Studi Ilmu Kelautan, Jurusan Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Pattimura, Jl. Ir. M. Putuhena, Poka, Kec. Teluk Ambon, Kota Ambon, Maluku, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mechanical Engineering Social Sciences Other

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INTRA-SEASONAL VARIABILITY OF NEAR-BOTTOM CURRENT IN THE HALMAHERA SEA Marlin C Wattimena; Agus S Atmadipoera; Mulia Purba; Ariane Koch-Larrouy
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 6 No. 2 (2014): Electronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1409.838 KB) | DOI: 10.29244/jitkt.v6i2.9003

Abstract

The secondary entry portal of the Indonesian Throughflow (ITF) from the Pacific to Indian Oceans is considered to be via the Halmahera Sea (HS). However, few ITF studies have been done within the passage. This motivated the Internal Tides and Mixing in the Indonesian Througflow (INDOMIX) program to conduct direct measurements of currents and its variability across the eastern path of the ITF. This study focused on the intra-seasonal variability of near-bottom current in HS (129°E, 0°S), its origin and correlation with surface zonal winds and sea surface height over the equatorial Pacific Ocean. The result showed a strong northwestward mean flow with velocity exceeding 40 cm/s, which represented the current-following topography with the northwest orientation. Meridional current component was much stronger than the zonal component. The energy of power spectral density (PSD) of the current peaked on 14-days and 27-days periods. The first period was presumably related to the tidal oscillation, but the latter may be associated with surface winds perturbation. Furthermore, cross-PSD revealed a significant coherency between the observed currents and the surface zonal winds in the central equatorial Pacific zonal winds (180°E-160°W), which corroborates westward propagation of intra-seasonal sea surface height signals along the 5°S with its mean phase speeds of 50 cm/s, depicting the low-latitude westward Rossby waves on intra-seasonal band. Keywords: current, equatorial Pacific Ocean,  zonal winds, sea surface height, Halmahera Sea
Analysis of Changes in the Coastaline of Tabailenge Island North Morotai District, Morotai Island Regency Kismanto Koroy; Nurafni; Marlin Chrisye Wattimena; Iswandi Wahab
East Asian Journal of Multidisciplinary Research Vol. 2 No. 3 (2023): March 2023
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/eajmr.v2i3.3500

Abstract

Shoreline change is a process that occurs dynamically and changes in sea bathymetry. The process of adjusting the coastline is continuously carried out for a natural balance against various impacts that can affect changes in the coastline. The process of changing the coastline can occur naturally and is anthropogenic. Based on this description, it is necessary to study/research changes in the coastline seen from oceanographic factors in the form of currents on Tabailenge Island, North Morotai District, Morotai Island Regency. This research was conducted in November 2022 in the waters of Tabailenge Island, South Morotai District, Morotai Island Regency. Analysis was conducted using field data (primary) and Google Earth software image data (secondary). Analysis was carried out using image data from different years (2009, 2011, 2016, 2019, and 2021). The research phase begins with preparing photo image data that will be analyzed for changes in the coastline using satellite imagery from the Google Earth application for the observation periods of 2009, 2011, 2016, 2019, and 2021. Image data use the JPEG format for different months of observation depending on availability. Cloud-free data contained in Google Earth. Based on data from image interpretation in 2009, 2011, 2016, 2019, and 2021, digitization has been carried out to show that there has been a change in the coastline from year to year. Observation of image data for a period of ± 10 years shows that changes in the coastline occur due to the influence of oceanographic parameters such as currents.
PENINGKATAN KUALITAS LINGKUNGAN PESISIR MELALUI AKSI BERSIH PANTAI DI DESA RUMAH TIGA KOTA AMBON: The Improvement Of Coastal Environment Quality Through Beach Clean-Up Program In Rumah Tiga Village, Ambon City Marlin Chrisye Wattimena; Junita Supusepa; Frijona Fabiola Lokollo; Krisye Krisye; Eva Susan Ratuluhain; Juliana Wihelmina Tuahatu; Irma Kesaulya; Simon Tubalawony; Valentine Domaris Saleky; Fahrul Rozy Fakaubun; Imanuel Villian Trayanta Soukotta
MESTAKA: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2023): April 2023
Publisher : Pakis Journal Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58184/mestaka.v2i2.52

Abstract

Contaminants entering marine systemts have become environmental issues because of their significantly negative impacts. Coasts of Rumah Tiga Village are connected to Ambon Bay and provide marine habitats and tourist attractions due to their location close to Merah Putih Bridge (including recreations, restaurants and aquaculture sites). These human related activities contribute to the discharge of wastes into marine waters. Due to their location at inshore outer Ambon Bay, marine pollutants from the bay tend to be applied at the location. Because of the concentrated pollutants at the location, the coasts of Rumah Tiga Village are a suitable location to conduct beach clean-ups in Ambon Bay. The beach clean-up activities also aim to allow Study Program of Marine Science of Faculty of Fisheries and Marine Sciences, Pattimura University to raise awareness to its students and local community to care for environment.
Variabilitas Hidrometeorologi Permukaan Laut Arafura Pada Saat Fenomena Enso Intan Buton; Simon Tubalawony; Marlin Chrisye Wattimena
Jurnal Laut Pulau: Hasil Penelitian Kelautan Vol 2 No 2 (2023): Jurnal Laut Pulau
Publisher : Prodi Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jlpvol2iss2pp32-50

Abstract

Dinamika Laut Arafura dipengaruhi oleh iklim yang terjadi seperti angin Monsun dan ENSO. Pengaruh iklim terhadap perairan, tentunya juga akan berdampak pada parameter oseanografi yang ada pada perairan tersebut seperti suhu dan salinitas. Tujuan penelitian ini adalah untuk mengkaji variasi angin, suhu dan salinitas permukaan saat fenomena Enso di Laut Arafura. Data suhu dan salinitas yang digunakan adalah data dari model Marine Copernicus, data angin dari ECMWF dan data indeks Enso bersumber dari NCEP. Pengolahan data menggunakan perangkat lunak ODV, Mcrosoft. Exel dan Panoply. Hasil penelitian menunjukkan bahwa kecepatan angin cenderung lebih tinggi saat periode El Nino, sedangkan periode La Nina angin lebih rendah. Variasi suhu selama periode La Nina tahun 2010/2011 cenderung lebih tinggi daripada periode Normal tahun 2013, sementara selama periode El Nino tahun 2015 suhu laut lebih rendah daripada periode Normal. Suhu maksimum selama ketiga periode 31.8 oC dan suhu minimum 23.6 oC, sebaliknya sebaran salinitas selama periode El Nino cenderung lebih tinggi daripada periode Normal, sedangkan periode La Nina memiliki salinitas lebih rendah daripada periode Normal. Salinitas maksimum selama ketiga periode 35.5 psu dan salinitas minimum 22.3 psu. Perubahan suhu dan salinitas diduga dipengaruhi oleh fenomena ENSO dan pengaruh angin Monsun yang memengaruhi sirkulasi massa air di Laut Arafura.
PEMANFAATAN TEKNOLOGI UNTUK MENINGKATKAN EKONOMI NELAYAN TUNA DI DUSUN TAPI DESA WAKASIHU Waas, Harold J D; Wattimena, Marlin C; Krisye, Krisye; Rahman, Rahman; Saleky, Valentine D
Balobe: Jurnal Pengabdian Masyarakat Vol 2 No 1 (2023): Balobe: Jurnal Pengabdian Masyarakat
Publisher : Pattimura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/balobe.2.1.9-16

Abstract

Tuna fishing is one of the main livelihoods of the people of Wakasihu Village, in West Leihitu District. The impact of climate change and other external factors makes it difficult to determine potential tuna fishing areas in the waters. As a solution, the Department of Marine Science, Pattimura University has disseminated information on the Application of Satellite Remote Sensing and Acoustic Technology to Improve Fishermen's Economy. The results of the implementation of the activities were obtained (1) The desire of the tuna fishing community to use both technologies in tuna fishing operations, (2) Formation of a tuna fishing group to facilitate the processing of the KUSUKA Fisherman Card and obtaining assistance from the Marine and Fisheries Agency of Maluku Province, (3) Desire entered into an MoU with the Faculty of Fisheries and Marine Sciences, Pattimura University to solve fisheries problems in Wakasihu Village.
Co-Authors Agus Atmadipoera Ariane Koch-Larrouy Fahrul Rozy Fakaubun Frijona Fabiola Lokollo Harold J.D. Waas Imanuel Villian Trayanta Soukotta Intan Buton Irma Kesaulya Iswandi Wahab Junita Supusepa Kismanto Koroy Krisye Pasanea Mulia Purba Nurafni Rahman Rahman Ratuluhain, Eva Susan Saleky, Valentine D Simon Tubalawony Tuahatu, Juliana W. Valentine Domaris Saleky