ABSTRACT
The last chapter explored static liquefaction in which large undrained strength reductions can be caused by an increase in pore water pressure. Although static liquefaction can be very dramatic, it is rather different from the failures during the Niigata and Alaskan earthquakes of 1964 that brought earthquake-induced liquefaction to the forefront of geotechnical engineering. The key feature of earthquakes is, somewhat obviously, the ground shakes. Shaking varies loads and stresses cyclically, and it is this cyclic action that can cause liquefaction.
