Abstract
This paper examines the behaviour of subaqueous gravity mud flows in a set of centrifuge model tests. Focusing on the high density sediment transport due to the gravity current, we performed 17 centrifuge tests on clay deposits with water content from 80 to 140%. We found that there is a critical point to differentiate flow regime at water content 120%. These are 1) uniform flow of clay and 2) turbidity current of clay. In the former, the flow distance increases with an increase in the water content. In the flow of the latter, the velocity of the flow was maintained and the flow distance was lengthened. This flow mode is considered to be one of long-distance transport conditions of gravity flow with high density.
