基于金字塔演化策略的海洋溢油漂移扩散敏感区识别方法OA

The range of oil spill drift-diffusion varies greatly,and the influence on the drift-diffusion range by the oil film drift angle deviation is always ignored subject to the identification method based on the oil film expansion rate.To address this,an identification method for the above sensitive areas was produced based on Pyramid Evolution Strategy.An oil particle model was built to describe the physical expansion process of marine oil spill drift by using the parameterized correction formulas.Combining with the advection and turbulent diffusion processes,Lagrangian particle tracking trajectories were used to predict the drift-diffusion of marine oil spill.The support vector machine was used to calculate the deviation value of high-dimensional oil film drift angle,and then optimize the oil film expansion rate by using the pyramid evolution strategy.By defining the oil film expansion rate as an individual unit,the objective function and constraint conditions of the support vector machine model were fully taken into account,which led to the fitness function corresponding to the process of optimizing the pyramid evolution strategy.The hierarchical pyramid structure was used to search the residual amount of oil spill drift-diffusion area,so that the oil film expansion rate could quickly converge to the optimal value.The residual amount of oil spill drift diffusion area was updated,and the maximum-value-based oil spill drift-diffusion area was verified as the sensitive area.The experimental results showed that this method could be used to accurately predict the drift and diffusion of marine oil spill,and AUC value at 95%confidence level was still far from the floor limit,which helped achieve high-precision identification of sensitive areas.