Top: Science: Environment: Coasts and Beaches: Terminology: V



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Valley

An elongated DEPRESSION, usually with an outlet, between BLUFFS or between ranges of hills or mountains.


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Variability of waves

(1) The variation of heights and periods between individual waves within a wave train.
(2) The variation in direction of propagation of waves leaving the GENERATING AREA.
(3) The variation in height along the crest, usually called "variation along the wave".


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Velocity profile

The velocity gradient within the BOTTOM BOUNDARY LAYER, displayed as a graph of height above the BED against the velocity of the flow.


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Viscosity

Resistance to flow. 



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