ERTH 2402 Lecture Notes - Lecture 16: Permafrost, Landslide, Frank Slide
19 Apr 2016
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Document Summary
Force of attraction betweene masses and separated by distance (r) Driving force is the component of gravity parallel to the slope ( wants to pull things down) Resisting force wants to keep things in place stay stable. Conditions decreasing stability: adding mass high on a slope, 2 steepening of a slope, removing support at the base of the slope ( unstable unsupported) Wave erosion waves, water carves over hangs when the water rises to a certain point. Removal of lateral support decreases stability the drop in water levels causes things to slide (rotational slide: ppresence of weak material. Frictions force that resits motion between two surfaces in contact Fractures oriented in the slope direction are particularly unstable (less stable in one direction in other words uniformed or parallel more stable in the non uniformed direction. Regional scale fault bryce national park in utah . Local scales explain and match out the different features in scale.
