淡水河上游流量對潮汐傳播之影響

The Effect of Freshwater Discharge on Tidal Propagation in Danshuei River Estuary

柳文成(Wen-Cheng Liu) ； 許銘熙(Ming-Hsi Hsu) ； 李振豪(Jen-Hau Li) ； 郭義雄(Albert Y. Kuo)

《農業工程學報》 51卷1期 (2005/03) Pp. 69-79

https://doi.org/10.29974/JTAE.200503.0007

摘要

河口是海洋與陸地交會的地方，河口具有著海洋潮汐、波浪與河川水文狀況互動而成的環境現象與特質，因此不論在生態系統、自然景觀及資源方面，都有其獨特性及高度的敏感性，感潮河段之水理情形，主要受到河口潮位變化與河川上游流量的影響，隨著河川流量、潮汐強弱有別，河口段的位置也常有變動。
本研究以感潮河段數值模式為主，以邊界條件交互迭代的方式，結合感潮河段數值模式與河川變量流模式，讓感潮河段數值模式上游邊界得以延伸。以淡水河流域為研究對象，將感潮河段上游邊界上移之後，以銜接完成後的模式進行模擬，對模擬數據加以分析，討論不同的上游入流量對於淡水河感潮河段內的水理現象與潮汐傳播變化之情形，進一步掌握淡水河上游流量對下游感潮河段所造成的影響。

關鍵字

感潮河段 ； 模式銜接 ； 淡水河 ； 上游流量

並列摘要

The estuary sited in a transition between ocean and land has peculiarity and sensitivity in ecosystem and natural environment and resources, because the estuary is the place that there is interaction between freshwater inflow and tide. The hydrodynamic in estuarine river is affected by inflow and tide, so that the end of the estuarine river is often changed.
The main purpose of the study is to combine the estuarine hydrodynamic model and the unsteady flow model by iteration of the interior boundary condition in the junction. The modeling domain can be expanded to more upstream reach due to the modification The study domain includes the Danshuei River estuarine system. As examples of model utility, the calibrated model is used to investigate the hydrodynamics and tidal propagation in the Danshuei river estuary with different upstream inflow and to further understand the effect of the upstream inflow on the tidal Danshuei River.

並列關鍵字

Reservoir operations ； Reservoir planning ； Goal programming ； Linear programming ； Network programming