In earth science, this term refers to the slow, persistent deformation of solid materials. It is a type of mass wasting that involves the gradual downslope movement of soil and regolith. For instance, the tilting of fence posts, the curving of tree trunks on hillsides, and the accumulation of soil at the base of retaining walls are all visual indicators of this process.
The significance of this phenomenon lies in its widespread influence on landscape evolution and infrastructure stability. While appearing insignificant in the short term, its cumulative effect over extended periods can lead to substantial displacement of earth materials, impacting agricultural land, building foundations, and road construction. Understanding its mechanisms and rates is crucial for hazard assessment and mitigation strategies.