象山港分区水交换数值研究  

The numerical study of water exchange in the Xiangshan Harbour of Zhejiang Province,China

作　　者：姚炎明[1] 彭辉[1] 杜雅杰[1] 刘莲[2] 

机构地区：[1]浙江大学港口海岸与近海工程研究所,浙江杭州310058 [2]国家海洋局宁波海洋环境监测中心,浙江宁波315040

出　　处：《海洋学报》2014年第1期126-130,共5页

基　　金：国家海洋公益性行业科研专项经费资助项目(201105009);象山港海域海洋环境质量综合评价方法(DOMAP(MEA)-03-02)

摘　　要：在验证良好的三维斜压潮流数学模型的基础上,将象山港划分成7个海区,以7种不同的溶解态保守性物质为示踪剂,建立对流-扩散型的海湾水交换数值模型,采用关联矩阵法来描述各区之间以及各区与外海之间的水交换特性。通过不同示踪剂的浓度分布,计算了15、30、45、60和80d的水交换矩阵。由各时刻水交换矩阵可知,在象山港的7个子区中与湾外水的水交换速度最快的为Ⅰ区,最慢的为Ⅶ区。Ⅲ区(西沪港)、Ⅵ区(黄墩港)和Ⅶ区(铁港)内水体与湾外海水之间的水交换速度缓慢,但与区域外水体之间的交换速度要明显快于其他几个海区。从水交换矩阵可以看出西沪港、黄墩港和3个内港之间相互交换的海水量很小。Based on a well-verified three-dimensional tidal flow mathematical model,the Xiangshan Harbour is di-vieled into seven areas,seven different dissolved conservative materials are used as tracers,an advection-diffusion water exchange numerical model is established,and an associated matrix method is applied to describing water ex-change characteristics between districts,and between these districts and the sea.The concentration distribution of different tracers,is used to calculate water exchange matrixes of the 15th,30th,45th,60th and 80th day.According to the water exchange matrix in each moment,among the seven regions of the Xiangshan Harbour,exchanging with the outside water in Region I is the fastest,which has an exchange rate of 85%in 15 d,while the slowest RegionⅦonly reaches about 10% after the same duration.In RegionⅢ（the Xihu Inlet）,RegionⅥ（the Huangdun Inlet） and RegionⅦ （the Tiegang Inlet）the water exchange speed is slow between these regions and the outside water, but is still significantly faster than other regions.The fastest is in RegionⅥ,in which the original water accounts for 1. 5% on the 15th day,and 0. 3%on the 60th day.And the slowest is in Huangdun InletⅣ,in which the o-riginal water accounts for 22. 7% on the 15th day,and 4. 4%on the 60th day.Furthermore,the matrix suggests that water exchanges between the Xihu Inlet and the Huangdun Inlet and three inner inlets are very weak.

关 键 词：象山港 水交换 矩阵 delft3D 

分 类 号：P731.26[天文地球—海洋科学]