Abstract
This paper presents a concise summary of our recent research advances on wave-induced liquefaction and submarine liquefied sediment flow dynamics. The importance of both mechanisms is illustrated by a latest case study. A quantitative analysis of the event that took place in December 2014 demonstrates that the silty ground formed by repeated pouring of dredged soils underwent liquefaction due to the build-up of residual pore water pressures under sufficiently high wave conditions, and subsequently transformed itself into the form of sediment gravity flows, travelling a long distance and re-deposited. The paper also presents and discusses the analytical basis by which to predict and assess these phenomena for disaster mitigation.
