访问频率场模型在大连黑石礁湾污水排海工程环境评价中的应用

利用污染羽流浓度模拟法，采用连续释放质点拉格朗日追踪法计算污染羽流的运动路径。选用大肠杆菌作为污染指标生物，考虑了大肠杆菌衰减率随时间的变化关系。针对黑石礁湾风景旅游区的特点，提出了黄金时间污染羽流文章频率场的概念，对大连市黑石礁湾污水排海工程和黄金时间污染羽流的访问频率场进行了计算。计算结果表明，用访问频率场模型能够直观显示黑石礁湾排海污水中大肠杆菌影响的水域面积和时间，对于黑石礁湾污水排海工程

The application of visitation frequency model in the EIA in Heishijiao Bay Outfall,Dalian

Contaminant plume visitation frequency fields are calculated for the Heishjiao Bay Outfall,Dalian, by use of the plume concentration simulation method in which the path of the plume is estimated using the continous outfall particle tracking method.Total coliform was quantified as a pollution indicator and the function of its decay rate with time was considered.Considering the landscape and bathing beach of Heishijiao Bay,a concept of visitation frequency field in goldentime is presented,and the visitation frequency fields are calculated for the Heishijiao Bay Outfall.The results show that the visitation frequency field may directly indicate the area and time the coliform impacts on Heishijiao Bay water and it has a great significance in the EIA of Heishijiao Bay Outfall.