波浪在淤泥质床面上传播时波要素的变化

从理论上研究了波浪在淤泥质床面上传播时波高的沿程衰减和波长的变化规律对比分析了宾汉体模型和粘弹性体模型的数值计算结果，并用实验进行检验，结果表明：浮泥底床采用宾汉体模型是合理的。弹性影响可忽略不计，淤泥底床考虑弹性的影响是必要的．还讨论了波高衰减的非线性特征，以及泥层厚度、周期、水深等诸因素对衰减率的影响．

ON THE CHANGE OF WAVE PARAMETERS FOR WATER WAVES PROPAGATING OVER A MUDDY BOTTOM

Muddy bottoms have significant effects on the properties of water waves whichpropagate over the bottom. In this paper, the changes of wave parameters are examined boththeoretically and experimentally. The comparison between the theoretical results obtained on aBingham model and a nonlinear visco-elastic model, and the experimental results shows thatwhen the density of mud is low (fluid mud), the Bingham model can reasonably predict thechange of wave parameters, but when the density of mud is high, the effect of elastisity should betaken into account. The nonliner visco-elastic model could be more suitable for use. Thenonlinear characters of wave damping and the influence of thickness of the mud layer, wave period and water depth on wave damping are also discussed in detail.