近海水域三维水动力学和水质的精细模型研究

Three-Dimensional Refined Model for Hydrodynamics and Water Quality in Coastal Areas

本文把研究近海水域水质污染与控制的三维精细预报系统作为目标。在分析近海环境中各种物理、化学和生物现象的基础上 ,针对近海水域水污染的特点 ,选定一个包含有二十多个状态变量及其相互作用的三维非线性系统作为研究和模拟对象 ,建立了一个统一考虑物理、化学和生物等过程综合作用的近海水域三维水动力学和水质的精细模型 ,并成功地应用于日本博多湾的水质模拟。

The hydrodynamics and water quality in Hakata Bay,Japan are strongly affected by the seasonal variations in both the gravitational circulation and the stratification in the bay.The three dimensional hydrodynamics and water quality model has been developed to simulate the long-term transport and fate of polutants in the system.The model is so unique that it completely integrates the refined model of the hydrodynamics,biochemical reactions and the ecosystem in the coastal areas.It predicts daily fluctuations in the oxygen content at different depths in water throughout the year.The model has been calibrated well against the data set of historical water quality observations in Hakata Bay.