Physics
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998lpico.953...33s&link_type=abstract
The First International Conference on Mars Polar Science and Exploration, Proceedings of the Conference held at Camp Allen, TX.
Physics
Froude Number, Ground Wind, Mars Surface, Mountains, Supercritical Flow, Wind (Meteorology), Mars Atmosphere, Polar Regions, Atmospheric Circulation, Dust
Scientific paper
When large-scale flow takes place over and across an obstacle (e.g., a mountain range) or the flow over a plateau reaches a topographical (often steep) downward slope, strong downslope surface winds - attributed to the shooting effect or to downslope windstorms - are observed along the lee sides of the obstacles or topographical drops [see, e.g., 1]. On Earth these downslope storm events are known with a number of regional names, such as fohns, boras, and chinooks, depending on the region and whether the flow is typically colder or warmer than its surroundings. The occurrence of a downslope windstorm is linked with a combination of subcriticality or criticality of a flow arriving at the obstacle or the slope edge, and subsequent supercriticality of the flow at the edge or further down the slope, and ensuing conversion of potential energy to kinetic energy. In supercritical flow, the local Froude number is Fr > 1.
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