5.2 Mass movements

Mass movement is the downhill movement of material under the influence of gravity. Rock falls, mud slides, debris flows and landslides are all examples of mass movement and can be triggered by a range of processes, such as earthquakes, tectonic activity, hydrometeorological hazards and erosion and weathering.

Image from https://www.un-spider.org/news-and-events/news/satellite-and-airborne-insar-data-investigate-landslides-transition-stable

Air photo of the Mud Creek landslide, taken on May 27, 2017. Image: USGS, Sound Waves Fieldwork / Public Domain