The relationship between the flow of the head and body of a turbidity current traveling through a deep-sea fan channel is examined. Our interest lies especially in the relative thicknesses of the head and body as this will govern which spills out of the confines of the channel and is, therefore, important in submarine fan deposition.
It is found that for a Froude number of ~0.75 (a channel slope of 0.0022), or somewhat greater, the head and the body will be approximately equal in thickness and, therefore, would both spill from the channel. At higher channel slopes and Froude numbers, the head would be thicker and more significant in spilling while at lower slopes and Froude numbers, the body would be thickest and spilling. The implications of this to fan sedimentation and over-all fan construction are discussed.