Estimate of long-term sediment discharge at tidal inlets using water level data from a tide gauge
Estimate of long-term sediment discharge at tidal inlets using water level data from a tide gauge
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使用潮汐计的水位数据估算潮汐入口处的长期泥沙排放量
DOI：
10.1002/esp.3290190804
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发表时间：
1994
影响因子：
3.3
通讯作者：
M. Collins
中科院分区：
文献类型：
--
作者：
Shu Gao;M. Collins
描述了一种估计通过潮汐盆地入口的长期沉积物排放的简单方法。使用该方法，根据“表观潮汐盆地面积”的定义，从单个潮汐计的水位数据记录中推导出横截面平均流速。然后，通过使用电流的截面分布函数，获得的电流速度的时间序列用于定义“局部”电流速度。然后应用泥沙输送公式，使用获得的速度数据和公式中包含的其他相关参数以及关于波浪和潮流特征的频率分布函数，来估计通过入口的泥沙排放量。以基督城港（英格兰南部）为例，详细描述了该方法的分析程序。
A simple approach to the estimate of long-term sediment discharge through an entrance to a tidal basin is described. Using the method, cross-sectional mean current speeds are derived, on the basis of the definition of an ‘apparent tidal basin area’, from records of water level data from a single tide gauge. The obtained time-series of current speeds are then used to define ‘local’ current speeds, through the use of a sectional distribution function for the currents. Sediment transport formulae are then applied, using the obtained speed data and other relevant parameters contained within the formulae and frequency distribution functions with regard to wave and tidal current characteristics, to estimate sediment discharge through the entrance. Analytical procedures of the method are described in detail, in an example from Christchurch Harbour (southern England).