摘要 : Wave scattering over a sinusoidal bottom in the presence of an ambient current is investigated experimentally. Waves were generated in a flume with and without current and propagated over a patch of four sinusoidal bars before dis... 展开 Wave scattering over a sinusoidal bottom in the presence of an ambient current is investigated experimentally. Waves were generated in a flume with and without current and propagated over a patch of four sinusoidal bars before dissipating on a beach. A Doppler shift of the resonant Bragg frequency and an amplification of the wave reflection are observed in the presence of the current. Weak reflections over the beach are found to have a significant influence on the wave reflection over the bars. 收起