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Hazard Assessment - Topographic Exposure

Wind acceleration and turbulence. Show Larger Image
Wind Acceleration and Turbulence

For topographic hazard, the diagnostic question is 'are winds speeding up due to terrain obstacle/constriction?'

Wind speeds up over obstacles and produces turbulence in the wake of obstacle; at top of hills will speed up – high hazard; deep behind hill have shelter – low hazard; at base of hill in front have neutral conditions, no speed up or shelter - moderate.

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