massmovement
Mass movement, in geomorphology and geology, refers to the downslope transfer of rock, soil, and other earth materials under the influence of gravity. It encompasses a spectrum from very slow creep to rapid landslides, including rockfalls, rock avalanches, debris slides, debris flows, and mudflows. Movement is driven by gravity and modulated by material properties, slope angle, water content, vegetation, and seismic shaking. Triggers can include intense rainfall, snowmelt, earthquakes, human disturbance, and volcanic activity. Mass movement shapes landscapes, alters drainage patterns, and poses risks to settlements and infrastructure, making hazard assessment and monitoring important in affected regions.
In sociology and political science, mass movement refers to organized, large-scale collective action aimed at achieving
Note: the standard term in most contexts is two words, “mass movement.” The concatenated form “massmovement” is