GEOG1120 Study Guide - Final Guide: Downhill Creep, Soil Texture, Debris Flow
Document Summary
Steep shoreline bluffs, slowly slumping hillsides are examples. Unstable land on seafloor can cause tsunamis. But the focus here is land that moves and changes in ways that are disruptive to people"s lives and properties these include landslides, mudflows, debris flow, soil creeps, sinkholes, subsidence. Landslides: the downslope movement of masses of rock, soil or debris. Can be large or small and occur repeatedly in the same area. New landslides triggered by earthquakes, rain, rapid snowmelt, volcanic eruptions, gravity. Mudflows and debris flows: landslides that are saturated with water and are accompanied by heavy rains or volcanic eruptions, Form rivers of mud, rock, soil (create a consistency of liquid cement) Destroy anything in its path. (cause more damage than a volcano) Example, casita volcano in nicaragua on oct 30 1998. Soil creep: less dramatic than landslides and mudflows, but still destructive. Are the very slow, downhill movements of soil, happens too slowly for people to see.