Earth Sciences 1022A/B Lecture Notes - Lecture 14: Solifluction, Water Content, Regolith
10 Jan 2017
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Document Summary
Gravity is most important (but water is also critical); when water completely fills pores it reduced cohesion and allows grains to slide over each other and adds weight to soil. Over steepened slopes due to undercutting by waves, streams, and human excavation, resulting in loss of support for materials higher up the slope. Vegetation anchors soil and regolith with plant roots; removing plants makes the slope unstable and susceptible to failure. Earthquakes can dislodge rock and unconsolidated material, resulting in landslides. Based on types of materials, types of motion (free-fall, sliding, and flowing), and. Slump rock or consolidated material that moves as blocks along curved surfaces commonly lubricated by water. Gravity pulls the block in rotational motion away from a scrap with the block"s surface tilting back happens when the slope is undercut by a stream, by waves, or by human excavation. Common in mountainous areas, some travel less than 200 km/hr. and do a lot of damage.
