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317; Lecture 19
Term | Definition |
---|---|
Deserts | |
Streamlined flow | |
Turbulent flow | |
Vorticose Flow | |
Wind-velocity profile | |
Boundary layer | |
Bernoulli effect | |
Deflation | |
Abrasion | |
Sedimentation | |
Accretion | |
Encroachment | |
regions with very low annual rainfall (less than 300mm, 11in), sparse vegetation, extensive areas of bare rock, and alluvial plains | |
parallel layers of moving air | |
irregular movement of air, up and down and side to side | |
spiral flows around a central axis | |
graph of varying wind speeds from the ground to some altitude | |
lower 1000m (3280ft) of atmosphere affected by frictional drag from ground surface | |
when fluids flow, they create a pressure gradient where high pressure is concentrated near the ground and low pressure sits above it | |
the removal of loose particles by the wind | |
particles being transported by the wind wears away at a surface | |
grains fall out of the air or stop creeping forward | |
grains being moved by saltation hit the surface with a strong enough force to stop movement where they strike | |
deposition that occurs on a rough surface, some obstruction prevents creep from moving particles forward |