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A wind gap (or air gap) [1] is a gap through which a waterway once flowed that is now dry as a result of stream capture. [2] A water gap is a similar feature, but one in which a waterway still flows. Water gaps and wind gaps often provide routes which, due to their gently inclined profile, are suitable for trails, roads, and railroads through ...
A gap is a geological formation that is a low point or opening between hills or mountains or in a ridge or mountain range. It may be called a col, notch, pass, saddle, water gap, or wind gap. Geomorphologically, a gap is most often carved by water erosion from a freshet, stream or a river. [1]
Ventifact – Rock that has been eroded by wind-driven sand or ice crystals; Volcanic arc – Chain of volcanoes formed above a subducting plate; Volcanic cone – Landform of ejecta from a volcanic vent piled up in a conical shape; Volcanic crater – Roughly circular depression in the ground caused by volcanic activity
A mountain-gap wind, gap wind or gap flow is a local wind blowing through a gap between mountains. Gap winds are low-level winds and can be associated with strong winds of 20-40 knots and on occasion exceeding 50 knots. Gap winds are generally strongest close to gap exit.
A water gap is a gap that flowing water has carved through a mountain range or mountain ridge and that still carries water today. [1] Such gaps that no longer carry water currents are called wind gaps. Water gaps and wind gaps often offer a practical route for road and rail transport to cross the mountain barrier.
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Stream capture by headward erosion, leaving a wind gap. Stream capture, river capture, river piracy or stream piracy is a geomorphological phenomenon occurring when a stream or river drainage system or watershed is diverted from its own bed, and flows down to the bed of a neighbouring stream. This can happen for several reasons, including: