The steady, uniform flow of density currents composed of salt solutions or fine-grained suspensions is now fairly well understood. Dimensional analysis and the laws of flow of such currents are used in this paper to establish model laws for turbidity currents bearing coarse sediment in suspension. In order to reproduce the hydraulic behavior of such currents on a small scale, Froudian similarity is required and the settling velocity of particles in suspension should be scaled down by using fine-grained sediment and by using sediment composed of material with a specific gravity lower than that of rock materials. It is not possible on a small scale to form low density, steady, turbidity currents bearing coarse particles of normal rock materials.

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