Term
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Definition
| downslope movement of soil and rock under the direct influence of gravity. |
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Term
| What classifies mass movements? |
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Definition
-the type of material involved
-how the material moves:sliding, flowing, or falling
-how fast the material moves |
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Term
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Definition
| slow downslope movement; freezing and thawing causes creep |
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Term
| How do we know creep is active? |
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Definition
| bent trees, leaning fences and telephone poles, and the bending of rock layers downslope. |
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Term
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Definition
| dense, on-phase, fluid mixtures of rock,sand,mud, and water. |
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Term
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Definition
| the failure plane must be inclined less steeply than the inclination of the natural or manufactured slope. |
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Term
| What is commonly involved in slope failures? |
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Definition
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Term
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Definition
| pile of rock debris built up at the bas of a cliff |
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Term
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Definition
| coherent blocks move horizontally, overlying a liquified layer of sediment at depth |
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Term
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Definition
| pulling the landslide block downslope |
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Term
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Definition
| the strength of whatever material makes up the landslide |
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Term
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Definition
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Term
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Definition
| the result of frictional interaction between grains |
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Term
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Definition
| ratio between resisting and driving forces; below 1.0 is not safe |
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Term
| What is the major culprit in land instability? |
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Definition
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Term
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Definition
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Term
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Definition
| method of stabilizing slide mass; material is removes from the top of the landslide and placed at the toe. |
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Term
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Definition
| protect dwellings, divert debris |
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Term
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Definition
| resisting force in avalanches= trees, large rocks |
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Term
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Definition
| form from freezing rainstorm |
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Term
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Definition
| when a coherent mass of snow and ice hurtles down a slope |
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Term
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Definition
| occur in spring, when snowpack melts and weakens |
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Term
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Definition
| most common during storms, act as fluid and travel far and fast |
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Term
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Definition
| sinking or downward settling of earths surface |
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Term
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Definition
| occurs when humans extract underground water,oil,gas/ |
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Term
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Definition
| caused by earthquakes, volcanic activity, and the solution to limestone, dolomite, and gypsum. |
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Term
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Definition
| when an applied load is greater than the bearing capacity of the soil onto which it is placed. |
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