Ocean waves propagating over cohesionless seabed deposits
produce cyclic shear stresses within the deposit. Under certain
conditions these stresses may cause a progressive build-up of pore
pressure. Pore pressure accumulation can result in liquefaction or
a substantial decrease in the effective stress with attendant large
deformations of the seabed deposit....
The cyclic resistance of predominantly fine-grained soils has received considerable attention following ground and foundation failures at sites underlain by silt-rich soils during recent earthquakes. In several cases substantial ground deformation and reduced bearing capacity of silt soils has been attributed to excess pore pressure generation during cyclic loading. These...