Term
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Definition
| downslope movement of Earth's materials |
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Term
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Definition
rock that's exposed, no soil, and no vegetation on the rock (drier climates)
EG: Yosemite |
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Term
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Definition
| rock that detaches from the preface, gravity pulls and it ends up at the bottom |
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Term
| concave/convex/straight slopes |
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Definition
more humid, soil, and vegetation
EG: Santa Cruz Island, CA |
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Term
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Definition
| driving forces v. resisting forces |
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Term
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Definition
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Term
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Definition
| material, cohesiveness, friction |
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Term
| what happens when driving forces overpower resisting forces? |
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Definition
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Term
| variables of mass wasting |
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Definition
| material types, slope angle, slope topography, climate, vegetation, water, and time |
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Term
| what triggers mass wasting |
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Definition
| heavy rains, flooding, thawing, earthquakes, fires, volcanoes, and humans |
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Term
| Landslide in Thistle, Utah |
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Definition
| 1983: costliest landslide in US history; 400 million dollars; in 1999 it moved again |
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Term
| why will mass wasting increase in the future? |
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Definition
| urbanization and development, deforestation, and global climate changes |
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Term
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Definition
more than 8 million dollars in damage since 1928
Majority induced by construction
most occur along the MS and IL river
heavy rain triggers it |
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Term
| how to minimize mass wasting hazards |
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Definition
making a surface drain: mitigate for the natural hazards
soil cement being applied
drain to let water from slope out
piles into stable rock
fill for house pad
put in net/fencing
can install a measurement that measures how fast, how much, etc. |
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Term
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Definition
| individual rocks fall through the air and may accumulate as talus |
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Term
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Definition
| cohesive blocks of soft earth material slide on a curved surface; also called a rotational landslide |
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Term
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Definition
| soil and other weathered earth material slide on a tilted surface of bedrock or cohesive sediment; also called a debris slide or earth slide |
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Term
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Definition
| large blocks of bedrock slide on a planar surface, such as layering in sedimentary or metamorphic rocks |
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Term
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Definition
| granular flow of various combinations of snow, ice, organic debris, loose rocks, or soil which moves very rapidly downslope |
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Term
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Definition
| very slow, downslope movement of rocks and soil |
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Term
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Definition
| wet, partially cohesive and internally deformed mass of soil and weathered rock |
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Term
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Definition
| fluid mixture of rocks, sand, mud, and water that is intermediate between a landslide and a water flood; includes mudflows and lahars |
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Term
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Definition
| a combination of two or more types of sliding, flowage, and occasionally falls; forms where a type of landslide changed into another as it moves downslope. |
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