Shallow Submarine Landslides as a Geohazard to Coastal Infrastructure: Examples from NW United Kingdom

Subaqueous mass movement events from seven different coastal locations around NW United Kingdom have been investigated, and their failure types have been assigned. Landslide dimensions and volumes were estimated, and debris lobe runout distances were obtained to ascertain the approximate area impacted by each event. In the majority of the case studies, shallow gas within the glaciomarine sediments was noted to be a potential trigger mechanism, along with seismic activity associated with isostatic readjustment of the bedrock following deglaciation.