Term
Less than 250mm (10 inches) of precipitation
Lacking in vegetation
Cannot support a large population |
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Definition
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Term
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Definition
| This type of desert is centered around 30 degrees N and S latitude, controlled by air circulation, and is geographically extensive |
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Definition
| this type of desert is far from sources of moisture |
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Term
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Definition
| this type of desert is where mountain ranges cause barrier to flow of moisture |
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Term
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Definition
| this type of desert has cool, dry air that blows in from the ocean and evaporation occurs as it warms |
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Term
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Definition
| this type of desert has cold air that holds little moisture and the precipitation that does fall remains as ice for 1000's of years |
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Term
| Examples of Subtropical deserts |
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Definition
| Sahara and Great Australian |
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Term
| Example of a Continental Interior desert |
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Definition
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Term
| Examples of Rainshadow deserts |
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Definition
| Cascades and Sierra Nevada |
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Term
| Examples of Coastal deserts |
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Definition
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Term
| Examples of Polar deserts |
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Definition
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Term
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Definition
| this dune type has limited sand and steady winds in one direction |
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Term
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Definition
| this dune type has limited sand and strong converging winds |
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Term
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Definition
| this dune type has scarce sand and varying wind directions |
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Term
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Definition
| this dune type has abundant sand and moderate winds |
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Term
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Definition
| this dune type has abundant sand and strong offshore winds |
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Term
Sand supply
Wind velocity and variability of wind direction
Surface over which dune moves |
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Definition
| factors that the type of dune that develops is dependent on |
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Term
Surface creeps
Saltations
Suspensions
Loess |
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Definition
| sediments transported by wind |
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Term
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Definition
| particles too large to be lifted, moved by impacts with saltating sediments |
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Term
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Definition
| particles that bounce along the surface |
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Term
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Definition
| small grains carried by turbulant winds |
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Term
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Definition
| wind-blown silts and clays derived from nearby deserts or from glacial rock flour |
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