GEOG 1350 Lecture Notes - Lecture 5: Thermokarst, Thermal Conduction, Aquifer
1 Jun 2016
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Factor of safety, determines whether a slope will remain stable or fall; vary with precipitation rates. Loss of transportation routes, loss of life, loss of commercial forestry resources. January most likely to see rock falls due to cycles of freezing and thawing. Leda clays found only in southern ontario and quebec; special type of clay that is known to fail when disturbed. Road cut failure humans over steepen and the angle of repose is affected. Dry season in california lead to wildfires; vegetation is burnt and soil changes in ground; no soil to soak up moisture and no vegetation to hold land together; leads to landslides. San gabriel mountains, california similar to retaining walls, beams will redirect landslides around houses. Mitigation possibilities and how human-environment interactions impact processes. Major points for karst topography and subsidence. Soil expansion and contraction: changes in water content of soil; freezing and thawing. Subsidence: slow or rapid nearly vertical downward movement of earth"s surface.
