Wave bottom reflection induced by a changing bathymetry has a major impact on the near-shore environment, where harbors and other infrastructure are based. However, this reflection is only partially accounted for in large scale numerical wave prediction models. The present work implements the analytical bottom reflection source term derived in Yevnin and Toledo (2018) to WAVEWATCH III, a numerical prediction model based on the wave action equation. The new source terms reflection coefficient magnitude, reflection direction and directional spread are shown to produce good results with respect to analytical and numerical solutions, and are tested in a real-world example. The new term allows to better simulate the near shore environment, especially near islands, reefs, semi-enclosed basins or natural beaches with long mild slopes, where the directional changes can cause previously unaccounted for effects.

由变化的水深测量引起的波底反射对近岸环境产生重大影响，近岸环境是港口和其他基础设施的所在地。然而，这种反射仅在大规模数值波浪预测模型中得到了部分解释。目前的工作将 Yevnin 和 Toledo (2018) 中导出的分析底部反射源项应用于 WAVEWATCH III，这是一种基于波浪作用方程的数值预测模型。新的源项反射系数幅度、反射方向和方向扩展显示可以在解析和数值解方面产生良好的结果，并在实际示例中进行了测试。新术语可以更好地模拟近岸环境，尤其是靠近岛屿、珊瑚礁、半封闭盆地或具有长缓坡的天然海滩，