海洋动力要素耦合作用对悬浮物质输移的影响

Influence of oceanic dynamic factors coupling on suspended material transportation in coastal areas

利用近岸海洋动力要素耦合作用的数学模型提供的水动力条件,对悬浮物质输移扩散规律进行了数值模拟,并与在单纯潮汐风暴潮条件下的悬浮物质输移扩散规律进行了比较.数值模拟结果表明,考虑波浪和潮汐耦合作用的海洋动力参数与实测资料更加吻合,从物理机制上看也更加合理;考虑近岸海洋动力要素耦合作用的悬浮物质输移扩散规律明显不同于单纯潮汐风暴潮情况下的悬浮物质输移扩散规律.因此,在考虑悬浮物质输移扩散时,不应只考虑潮流,必须考虑近岸海洋动力要素的耦合作用.

The regularity of suspended material transportation and dispersion in coastal areas was simulated under the hydrodynamic condition obtained from the numerical model for oceanic dynamic factor coupling. The comparison of the simulated result with that under stoma tides indicates that the present results about wave height, water level, flow velocity and flow direction are more close to the field data, showing that the present result is more reasonable. In consideration of the above fact, not only the oceanic dynamic factors, but also the coupling of the factors should be considered in analysis of suspended material transportation and dispersion.