Runup of landslide-generated waves is an important natural hazard in coastal regions, and can result in major damage to the natural and built environment. Past work has investigated the runup of non-breaking waves, whereas, in contrast, little data is available on the runup of waves at the point of breaking prior to interaction with the opposing shore. In the present study, impulse waves were generated in a series of laboratory flume experiments by releasing a range of different slide source volumes of highly mobile slide material (water) into different reservoir depths, to observe the runup of breaking and non-breaking waves at the point of arrival at steep slopes ranging from 25° to 45°. Water surface characteristics including the maximum wave amplitude were measured using wave probes and digital imagery was obtained using high-speed cameras. The maximum runup, and the cross-slope variability in runup, of each wave was captured using hydrochromic paint, which changes colour on contact with water. The experimental results indicate that in the near-field the runup of breaking waves is dependent on the wave amplitude relative to the water depth, and is nearly independent of the slope angle. Statistical analysis of the runup observations for breaking and non-breaking waves indicate that the variability of runup across the width of the slope increases with increasing incident relative wave amplitude. These observations, combined with runup data from previous studies, are used to develop a new semi-empirical equation for the maximum runup of breaking and non-breaking waves. The formulation is valid over an extended range of relative wave amplitudes, relevant for near-field runup that has been documented in major field cases. The experimental observations in the present study provide, for the first time, a comprehensive dataset of runup for impulse waves involving breaking and no breaking on arrival at a slope.

在沿海地区，滑坡产生的波的传播是重要的自然灾害，可能对自然和建筑环境造成重大破坏。过去的工作已经研究了不间断波浪的上升，但是相比之下，在与对岸互动之前，在破碎点处的波浪上升的数据很少。在本研究中，脉冲波是在一系列实验室水槽实验中产生的，方法是将一系列高度移动的滑动材料（水）的不同滑动源体积释放到不同的储层深度中，以观察破裂波和非破裂波在在25°到45°的陡坡上到达的点。使用波探针测量包括最大波幅的水面特征，并使用高速相机获得数字图像。使用水致变色涂料捕获每个波的最大波峰和波峰中的横坡变化率，该漆在与水接触时会改变颜色。实验结果表明，在近场中，破碎波的上升取决于相对于水深的波幅，几乎与倾斜角度无关。对破裂和非破裂波的上升观测的统计分析表明，在斜坡宽度上的上升变异性随入射相对波幅的增加而增加。这些观察结果与先前研究的启动数据相结合，被用于开发一个新的半经验方程式，用于确定破碎波和非破碎波的最大扩展。该公式在相对波幅值的扩展范围内有效，这与在主要现场案例中已记录的近场加速有关。本研究中的实验观察首次为脉冲波的爬坡提供了一个完整的数据集，该脉冲波涉及到到达坡度时没有破裂而没有破裂。