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Table 2 Comparison of subaerial river currents and subaqueous turbidity currents (partly based on Shanmugam 1997)

From: The hyperpycnite problem

Features River currents Turbidity currents
Ambient fluid Air Water
Rheology of fluid Newtonian Newtonian
Type of gravity influence Fluid gravity Sediment gravity
Nature of flow Uniform\steady\and continuous Uniform\unsteady\and episodic
Sediment concentration Low (1%−5% by volume) High (1%−23% by volume)
Dominant transport of sand Bed load Suspended load
Dominant structures Cross bedding Normally graded bedding