Some constraints on the severity of landslide penetration in sensitive deposits.

Abstract

Theoretical consideration and case-studies are presented to show that, in many cases, the severity of retrogression of an unstable valley slope, in areas of sensitive muddy sediment, is controlled by the topography of the valley. A formula is offered to predict the distance of retrogression from topographic attributes of valleys. Those situations in which retrogression can exceed this topographic limit are briefly examined: attention is focussed on the importance of spoil liquefaction as a prerequisite for such excess landslide retrogression. -from Authors