Interpolation of Tidal Levels in the Coastal Zone for the Creation of a Hydrographic Datum
Interpolation of Tidal Levels in the Coastal Zone for the Creation of a Hydrographic Datum
复制标题
沿海地区潮位插值以创建水文基准
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
K. Horsburgh
中科院分区：
文献类型：
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作者：
J. Turner;J. Iliffe;M. Ziebart;Chris Wilson;K. Horsburgh
摘要作为英国的一部分，由英国水文局（UKHO）赞助的垂直近海参考框架（VORF）项目，已为英国-爱尔兰沃茨开发了一个高分辨率的最低天文潮（LAT）相对于平均海平面的模型。在近海地区，该模型依赖卫星测高数据，而在沿海地区，则包括了3.5公里分辨率的水动力潮汐模型和验潮仪的数据。为了提供一个光滑的表面和预测未观测到的地区的潮汐水平，数据已被合并和插值使用薄板样条方法，这已被适当调整的经验预测测试，从而在验潮仪观测值被删除的解决方案空间和周围的数据用于预测其行为。为了考虑复杂的海岸形态，在数据加权内实现了海距函数，这显着增强了解决方案。调优过程允许独立验证，提供...
Abstract As part of the U.K. Hydrographic Office (UKHO)-sponsored Vertical Offshore Reference Frames (VORF) project, a high-resolution model of lowest astronomical tide (LAT) with respect to mean sea level has been developed for U.K.–Irish waters. In offshore areas the model relies on data from satellite altimetry, while in coastal areas data from a 3.5-km-resolution hydrodynamic tide-surge model and tide gauges have been included. To provide for a smooth surface and predict tidal levels in unobserved areas, the data have been merged and interpolated using the thin plate spline method, which has been appropriately tuned by an empirical prediction test whereby observed values at tide gauges were removed from the solution space and surrounding data used to predict its behavior. To allow for the complex coastal morphology, a sea distance function has been implemented within the data weighting, which is shown to significantly enhance the solution. The tuning process allows for independent validation giving a ...