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題 名 | 密度變化對河口環流、鹽分分佈與水質之影響=The Influence of Density Variation on Estuarine Circulation, Salinity Distribution and Water Quality |
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作 者 | 柳文成; 許銘熙; 郭義雄; 郭振泰; | 書刊名 | 農業工程學報 |
卷 期 | 45:1 1999.03[民88.03] |
頁 次 | 頁1-12 |
分類號 | 351.81 |
關鍵詞 | 數值試驗; 水理與水質模式; 河口環流; 密度變化; 淡水河河系; Numerical model experiment; Hydrodynamic and water quality models; Estuarine circulation; Density variation; Tanshui River system; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究之主要目的利用數值試驗應用於探討淡水河河口因密度變化對河口環流、 鹽分分佈與水質之影響。橫向平均垂直二維水理暨水質數值模式已發展並應用於淡水河複雜 河系。數值試驗採用兩種密度情形用於探討密度不同對河口環流、鹽分分佈與水質所產生之 影響;首先考慮河口有密度變化產生,即為一般河口所使用同係數值及河道地形狀況。數值 試驗所採用之係數值已經過模式檢定與驗證程序,此係數包括曼寧係數,紊流混合擴散項及 計算各水質變數所採用之係數。數值試驗結果顯示此兩種河口密度之改變對河口環流、鹽分 分佈及水質狀況會有重大差異產生。 |
英文摘要 | The main purposes of this study apply the numerical model experiments which are carried out to investigate the influence of density variation on residual current, salinity distribution and water quality in the Tanshui estuary. The vertical (laterally averaged) two-dimensional, real-time hydrodynamic and water quality models, which has been developed and applied to the Tanshui River system, is outlined. A detailed analysis of residual circulation, salinity distribution and water quality is made for two cases. One case involved density variations while the other assumed a constant density Both cases used the same coefficient and bathymetric schematization. The coefficients, having been calibrated and verified with observational data, including Manning's friction coefficient, constants in turbulent mixing terms in the vertical direction and water quality rate constants. The modeling results show that residual current, salinity distribution and water quality are significantly different between the two numerical experiments. |
本系統中英文摘要資訊取自各篇刊載內容。