Abstract:By using the GNOME model of oil spillage, the drift trajectory and diffusion distribution of the “Century Light” oil spill were simulated. First, the FVCOM hydrodynamic model was used to simulate the tidal field, which was broadly consistent with the results of the tide tables. The wind field was determined by using the Climate Forecast System Reanalysis Data (CFSR) of the National Center for Environmental Prediction (NCEP). The GNOME oil spill model was used for numerical simulation, and Tyson’s method was used for the analysis of the contaminated area. The “minimum regret” trajectory and the best forecast region were obtained through numerical simulation. The comparison of the simulation results after 21 hours with the MODIS remote sensing monitoring data showed that the drift position was basically consistent. This paper describes the assessment criteria for various fishery resources and methods for determining marine ecological damage and loss compensation assessment. Combining the simulation results with the trawl survey data, the direct economic loss of swimming animals was calculated to be 61000 yuan, with the direct loss of fishery resources, within 4 days, reaching a value of 511900 yuan. The oil loss from the “Century Light” event reached a value of 2112600 yuan within 4 days. In this paper, the method of numerical simulation was related to the assessment of fishery resources, and the loss of fishery resources was estimated without on-site observation. The GNOME oil spill model can be applied to similar oil spill trajectories and for rapid prediction of flooding, to provide a method and reference for emergency response to oil spill accidents. The combination of numerical simulation of oil spills and on-site observations will be an important reference method for new ideas in future calculations of fishery resource losses and fishing losses, leading to more comprehensive and scientific handling of oil spills.
