GG231 Study Guide - Final Guide: Engine Knocking, Mudflow, Anastomosis
Document Summary
Result of changes in the forces of slope. Driving forces include uplift and erosion which cause rock to move faster down slope. Resisting forces act as friction force against the motion of rock materials. Lands at the base of the slope. Triggered by vibrations, ice or vegetation: slide. Liquid movement in water or sometimes air. Mass breaks up and flows during movement. Distribution in canada: common in mountainous areas, st. lawrence lowland and b. c, yukon and alberta river valleys, lacustrine, marine silts, clays, cretaceous shales and quaternary volcanic rock are materials prone to landslides. Factors that increase landslides: urbanization and development, tree cutting, changing climate patterns. Prediction and warning: slopes and seismic activity. Steepened slopes enhance seismic activity: geology and structure. Rocks weakened by water are at risk: surface water build up. Springs, pools and standing water: topographic and vegetation features, creep. Techniques to prevent earthquakes: slope drainage. Capture runoff and take away from slope: slope reduction.
