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Bohai Sea oil spill model: a numerical case study |
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| Authors: | Zengan Deng Ting Yu Xiaoyi Jiang Suixiang Shi Jiye Jin Linchong Kang Feng Zhang |
| Institution: | 1. Key Laboratory of Digital Ocean, State Oceanic Administration, Tianjin, 300171, China 2. National Marine Data and Information Service, Tianjin, 300171, China 3. Ocean University of China, Qingdao, 266100, China |
| Abstract: | An operational Bohai Sea oil spill serving module (BSOSSM) that can provide users with trajectory and movement information of the released oil is developed for the purpose of informing mitigation of oil spill incidents in the Bohai Sea, China. BSOSSM is one of the serving modules that had been integrated in China digital ocean prototype system, a marine information platform for managing, displaying and disseminating all the data investigated by China 908 Program. The oil spill trajectory is calculated by an oil spill model (OSM), which serves as a component in BSOSSM. The impacts of wind, current, as well as Stokes drift on oil spill trajectory are studied by sensitivity experiments conducted using OSM. Simulation results indicate that wind forcing is the most important factor in controlling the oil trajectory at the sea surface in Bohai Sea, whereas current and Stokes drift play relatively less important roles. However, because the direction of waves generally follows that of the wind, Stokes drift does lead to an increase in oil drift and spreading velocity. Case studies of the Penglai 19-3 oil spill incident (June 2011) and Xingang oil spill (April 2005) demonstrate that OSM can generally reproduce the oil spreading, and is therefore capable of supporting the emergency response of future oil spills in the Bohai Sea through BSOSSM. |
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