Abstract Submarine debris flows have a significant impact on offshore and coastal facilities. The unique characteristics of submarine debris flows involve large mass movements and long travel distances over very gentle slopes. To improve our insight and knowledge of the basic mechanism behind submarine debris flows, an analytical model was derived for the mobility of submarine debris flows. This model takes into account the mass change of debris flows induced by deposition, stagnation pressure, and the topography of the depositional area. One case study on the Palos Verdes debris flow proves its ability to predict the run-out distance of a submarine debris flow to a reasonable level of accuracy. On the gentle slopes, the submarine debris flow progressively loses mass due to deposition, which in turn influences the flow velocity. In addition, the results show that the slope angle and spreading angle of the debris depositional zone play important roles in the sliding process.

中文翻译：

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海底泥石流溢出的分析解决方案

摘要 海底泥石流对近海和沿海设施产生重大影响。海底泥石流的独特特征包括在非常平缓的斜坡上大规模移动和长距离移动。为了提高我们对海底泥石流背后基本机制的洞察力和知识，我们推导出了海底泥石流流动性的分析模型。该模型考虑了由沉积、滞流压力和沉积区地形引起的泥石流质量变化。一项关于 Palos Verdes 泥石流的案例研究证明，它能够以合理的准确度预测海底泥石流的溢出距离。在缓坡上，海底泥石流因沉积而逐渐失去质量，进而影响流速。此外，