Our trip to the Wright Valley (via Helicopter)........
delayed due to
Katabatic wind
Sketch of the generation of Katabatic Winds
A
katabatic wind, from the
Greek word
katabatikos meaning "going downhill", is the technical name for a drainage
wind, a wind that carries high density air from a higher elevation down a slope under the force of gravity. Such winds are sometimes also called
fall winds.
Katabatic wind in Antarctica
Katabatic winds are most commonly found blowing out from the large and elevated ice sheets of
Antarctica and
Greenland. The buildup of high density cold air over the ice sheets and the elevation of the ice sheets brings into play enormous gravitational energy, propelling the winds well over hurricane force.
[1] In Greenland these winds are called
Piteraq and are most intense whenever a low pressure area approaches the coast.
Helos will be cleared and we will be off....
List of streamgages shown on the map:
| Site number | Stream |
| 14 | Onyx River at Lake Vanda Weir |
| 15 | Onyx River at Lower Wright Weir |
So, what makes the streams and valleys different from one another......Stay tuned.......and we will see you in the Wright Valley!
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