Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan.
Environ Monit Assess. 2010 Sep;168(1-4):407-28. doi: 10.1007/s10661-009-1123-2. Epub 2009 Aug 13.
A three-dimensional hydrodynamic model was created to study the Danshuei River estuarine system and adjacent coastal ocean in Taiwan. The model was verified using measurements of the time-series water surface elevation, tidal current, and salinity from 1999. We conclude that our model is consistent with these observations. Our particle-tracking model was also used to explore the transport of particles released from the Hsin-Hai Bridge, an area that is heavily polluted. The results suggest that it takes a much longer time for the estuary to be flushed out under low freshwater discharge conditions than with high freshwater discharge. We conclude that the northeast and southwest winds minimally impact particle dispersion in the estuary. The particles fail to settle to the bottom in the absence of density-induced circulation. Our model was also used to simulate the ocean outfall at the Bali. Our experimental results suggest that the tidal current dominates the particle trajectories and influences the transport properties in the absence of a wind stress condition. The particles tend to move northeast or southwest along the coast when northeast or southwest winds prevail. Our data suggest that wind-driven currents and tidal currents play important roles in water movement as linked with ocean outfall in the context of the Danshuei River.
建立了一个三维水动力模型来研究台湾淡水河口系统及邻近沿海海域。该模型使用 1999 年的水面高程、潮流和盐度时间序列测量进行了验证。我们得出结论，我们的模型与这些观测结果一致。我们的粒子追踪模型还用于研究从新海大桥释放的粒子的输运情况，该地区污染严重。结果表明，在低淡水排放条件下，河口需要更长的时间才能被冲洗干净。我们得出结论，东北风和西南风对河口的粒子扩散影响最小。在没有密度诱导环流的情况下，粒子无法沉降到底部。我们的模型还用于模拟在巴厘的海洋出水口。我们的实验结果表明，在没有风应力条件下，潮流主导着粒子轨迹并影响输运特性。当东北风和西南风盛行时，粒子往往沿着海岸向东北或西南移动。我们的数据表明，在淡水河的背景下，风生流和潮流在与海洋出水口相关的水动力中起着重要作用。
