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A first classification scheme of flow-bed interaction for clay-laden density currents and soft substrates

机译：含粘土密度流和软质基底流化床相互作用的第一个分类方案

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Many aquatic environments exhibit soft, muddy substrates, but this important property has largely been ignored in process-based models of Earth-surface flow. Novel laboratory experiments were carried out to shed light on the feedback processes that occur when particulate density currents (turbidity currents) move over a soft mud substrate. These experiments revealed multiple types of flow-bed interaction and large variations in bed deformation and bed erosion, which are interpreted to be related to the interplay between the shear forces of the current and the stabilising forces in the bed. Changes in this force balance were simulated by varying the clay concentrations in the flow and in the bed. Five different interaction types are described, and dimensional and non-dimensional phase diagrams for flow-bed interaction are presented.
机译：许多水生环境表现出柔软，泥泞的基质，但是这一重要特性在基于过程的地表流模型中已被很大程度上忽略。进行了新颖的实验室实验，以阐明当颗粒密度电流（浊度电流）在软泥浆基质上移动时发生的反馈过程。这些实验揭示了多种类型的流化床相互作用以及床层变形和床层侵蚀的大变化，这被解释为与电流的剪切力和床层稳定力之间的相互作用有关。通过改变流体和床中粘土的浓度来模拟这种力平衡的变化。描述了五种不同的相互作用类型，并给出了流化床相互作用的尺寸和无尺寸相图。

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