An underwater landslide, also known as a submarine landslide, is the movement of a large mass of sediment or rock down the continental shelf and slope, triggered by factors such as earthquakes or rapid sedimentation. These landslides are significant in marine geology for understanding sediment transport, tsunamis, and the formation of underwater landforms.
Reference: Hampton, M. A., Lee, H. J., & Locat, J. (1996). “Submarine Landslides.” Reviews of Geophysics, 34(1), 33-59.