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All Journal BULETIN OSEANOGRAFI MARINA Jurnal Kelautan Tropis Jurnal Segara
Koko Ondara
Research Institute for Coastal Resources and Vulnerability, Ministry of Marine Affairs and Fisheries
Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology

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Particle Tracking Model Approach for Analyzing Crude Oil Spill (Palm Fatty Acid Distillate) in Bayur Bay Based on Navier Stokes Discrete Koko Ondara; Ulung Jantama Wisha; Serli Marlinda Panjaitan
Buletin Oseanografi Marina Vol 10, No 1 (2021): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v10i1.29036

Abstract

Oil spilled in the marine ecosystem may be induced by some sources which alter over time and location. Oil leakage from offshore oil drilling, underwater oil pipeline leakage, etc., are the possible source of oil spill pollution. Marine pollution generated by oil spilling occurred in Padang City in 2017. Palm Fatty Acid Distillate (PFAD) spilled within Bayur Bay Harbor due to a leaking storage tank. As much as 50 tons of PFAD overflowed and commenced to pollute Bayur coastal bay. This study aimed to determine the distribution pattern of oil spills throughout the Bayur Bay based on a hydrodynamical model. We employed some oceanographic data and PFAD characteristics obtained directly from survey results. We simulated the particle tracking model for 30 days since the PFAD spilled within the port.  The model developed applied the Least Square method to analyze tidal data and a flexible mesh as a model basis, while the governing equation used is Navier Stoke discrete. During a month of simulation, the dominant particles' distribution is still spinning around the Bayur Bay due to the weak current characteristics with the magnitude ranging from 0.02-0.06 m/s. The lighter PFAD particle mass tended to move faster throughout the bay and settled in the coastal area. It will pollute the coastal system even though it is going to be decomposed chemically in the sediment.
Indonesia Marine Debris: Banda Aceh Coastal Environment Identification Koko Ondara; Ruzana Dhiauddin
Jurnal Kelautan Tropis Vol 23, No 1 (2020): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v23i1.6238

Abstract

Banda Aceh City, having an area of 61.36 km² with a coastline of 11 km which covers Ulee Lheu Beach to Alue Naga Beach. The research was carried out to determine marine debris statistics (type, amount and mass) which divided into 7 categories; plastic, metal, glass, rubber, processed wood (organic), clothing, and ceramics. This research also conducted to complement the Indonesian marine debris data which currently incomplete. We choose Banda Aceh as the preliminary location because its area affected by dynamic oceanographic parameters of the Indian Ocean, Bay of Bengal and bordered by several countries that could be a source of marine debris, thus making this research is important to do. Marine debris data were collected from March to May 2019, on the coast and waters surface. Data collection on the beach is carried out every 28 days using the transect method, while on the water surface by riding boats using visual observation techniques. Statistical results show that inorganic litter has the highest percentage and mass, which a mass density reached 288.37 g/100 m2 at Ulee Lheu Beach and 64.96 g/1 00 m2 at Alue Naga Beach. Plastic type dominates the type of marine debris on the beach about 92.2% and 51.4% on the water surface. The amount of plastic especially bottle continues to accumulate, it will not only endanger marine waters ecosystem but also potential to affect and damage the coastal environment. The results of this study are expected to provide input / recommendations for the government and related institutions in waste management in coastal and marine areas and tourism in a sustainable and sustainable way.
An Overview of Surface Water Quality Influenced by Suspended Solid Content in the Sayung Waters, Demak, Indonesia Ulung Jantama Wisha; Koko Ondara; Gunardi Kusumah
Jurnal Segara Vol 13, No 2 (2017): Agustus
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1113.82 KB) | DOI: 10.15578/segara.v13i2.6446

Abstract

Abrasion which is occurred in the Sayung coast is triggered by a big role of climate change as well as the sea level rise and land subsidence. Resulting degradation ultimately affects changes in existing environmental conditions. This study has aim to determine the existing water based on biological and chemical content which is affected by increasing suspended solid content in the Sayung waters. Purposive sampling technique was applied, and data is analyzed both statistically and spatially. Suspended solid value has ranged 23,1-199,6 mg/L. Distribution of suspended solid was only simulated during low tide towards high tide phase with current speed has ranged 0-0.41 m/s. We found that dissolved oxygen value is quite high in several observation stations which indicates the fertile area with low pollution and blooming tendency. In the station which is dominated by a high suspended solid and turbidity found that the chlorophyll-a decreases. The increased rate of suspended solid is directly enhancing the turbidity and indirectly declines the photosynthesis activity and inhibits the oxygen cycle. Resulting in the primary productivity reduction in the Sayung waters
Co-Authors Gunardi Kusumah Ilham Ilham Ruzana Dhiauddin Serli Marlinda Panjaitan Ulung Jantama Wisha Ulung Jantama Wisha Ulung Jantama Wisha