大亚湾海水污染扩散试验及涡动扩散系数的估计

AN EXPERIMENT ON POLLUTANT DIFFUSION OF SEAWATER IN DAYA BAY AND THE CALCULATION OF ITS VORTEX DIFFUSION COEFFICIENT

水质数学模拟扩散系数大亚湾现场求取实验，采用示踪剂扩散实验法。示踪剂扩散实验的目的，在于了解水流运动的稀释扩散能力，根据示踪剂运动轨迹和浓度分布，求出水平纵向扩散系数和横向扩散系数，供水质数学模拟应用。

The diffusion coefficient is an important parameter of seawater pollutantdiffusion. The purpose of this experiment on tracer diffusion is to understand thedilution and diffusion capability of water current movement, and calculate horizontallongitudinal and transversal diffusion coefficient for mathematical simulation of waterquality according to the moving track of tracer and the distribution of itsconeentration. The diffusion coefficient of seawater in Daya Bay is obtained by fieldexperiment of tracer diffusion. By instantenous discharge of the tracer anddiscontinuous sampling, the horizontal diffusion coefficient was obtained, while by continuous tracer discharge and standard synchronical sampling, the transversal diffusionwas derived.