大亚湾海域物理自净能力的时空差异性研究  

A STUDY ON TEMPORAL-SPATIAL DIVERSITY OF MARINE PHYSICAL SELF-PURIFICATION IN DAYA BAY

作　　者：刘云旭[1] 温伟英[1] 王文介[1] 

机构地区：[1]中国科学院南海海洋研究所,广州510301

出　　处：《热带海洋》1999年第4期61-68,共8页

摘　　要：根据多年现场实测资料,在模拟分析大亚湾流场特征及其区域差异的基础上,引用Euler-Lagrange余流模型及二维平流-扩散方程,模拟海湾水质点运移轨迹及污染物浓度场的时空分布,综合分析了大亚湾海域的物理自净能力的时空差异性。By the numerical models built on the base of on the spot data for many years and by analyzing the characteristics of tidal current field and the regional difference in the Daya Bay,the moving tracks of water particles and the temporal spatial distributions of pollutant concentrations in the bay were simulated by Euler Lagrange residual current model and 2 D advective diffusion equation,and the temporal spatial diversity of marine physical self purification(MPSP) was analyzed synthetically.The result showed that the moving diffusing ability of discharged pollutants in the area in winter was higher than that in summer,but more contaminants were moved out of the bay in summer.The MPSP was stronger in flood tide than in ebb tide.The area with the strongest MPSP was located in the east part of the Daya Bay.

关 键 词：大亚湾 物理自净能力 时空差异 污染物浓度 

分 类 号：X26[环境科学与工程—环境科学] X55