A Numerical Simulation of an Oil Spill in Tokyo Bay |
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| Institution: | 1. Department of Environmental and Molecular Toxicology, Oregon State University, 1007 ALS Building, Corvallis, OR, USA;2. Hatfield Marine Science Center, Oregon State University, 2030 SE Marine Science Drive, Newport, OR, USA;1. College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China;2. College of Environmental Science and Engineering, Maritime Safety Administration of the People''s Republic of China, Beijing 100736, China;3. College of Navigation, Dalian Maritime University, Dalian 116026, China |
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| Abstract: | An oil spill accident happened in Tokyo Bay on 2 July 1997. About 1500 m3 of crude oil was released on the sea surface from the Japanese tanker Diamond Grace. An oil spill model is applied to simulate the fate of spilled oil. The Lagrangian discrete-parcel method is used in the model. The model considers current advection, horizontal diffusion, mechanical spreading, evaporation, dissolution and entrainment in simulating the oil slick transformation. It can calculate the time evolution of the partition of spilled oil on the water surface, in the water column and the sedimentation on the bottom. A continuous source at constant rate is set up as a tanker off the coast of Yokohama. The grid size is 1 km in the calculation domain. The residual flow simulated by a 3-D hydraulic model and observed wind data are used for advection. The simulated distribution of oil spreading agrees well with observations from satellite remote-sensing. |
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