dust devils


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dust devils

Whirlwinds in which wind speeds are of of gale-force strength and in which surface dust is picked up and carried in dense columns of 5000 ft or more in height. They are formed as a result of the strong convection currents in the hot and dusty regions, such as deserts and other locations where the ground is very hot. Dust devils resemble tiny tornadoes, but they are caused by convective processes and produce significantly less damage than tornadoes. In many cases, they cause no damage of consequence. Also called a dust whirl or sand whirl.
References in periodicals archive ?
20pm, is more properly known as a convective dust devil, which develops when the ground heats up more quickly than the air immediately above.
As they sweep across the landscape, Mars's dust devils vacuum up a layer of red dust and expose the darker underlying substrate.
He is the lead author of a paper, "Oxidant Enhancement in Martian Dust Devils and Storms: Implications for Life and Habitability," that discusses the research in an issue earlier this year of the journal Astrobiology.
The Met Office at Bracknell recorded the Force 6 gust which they described as a dust devil.
A whole host of slang names for tornadoes have developed- in addition to `twister', other types of tornadoes are also known as dust devils, whirlwinds and landspouts.
Royal started a new wave of cordless vacs when it came out with the Dust Devil by Dirt Devil line at the housewares show.
The authors propose that dust devils and dust storms on Mars generate electrostatic fields--similar to the electric fields produced by thunderstorms on Earth--capable of transforming carbon dioxide and water into the precursors of H2O2.
The Ems needed a victory over Tri-City to win the first-half title in the South Division, but the Dust Devils defeated Eugene 4-0 to hand the title to the Hillsboro Hops.
London, May 9 ( ANI ): The Mars Reconnaissance Orbiter has captured three dust devils thundering across the surface of Mars.
Spinning whirlwinds of dust frequently form along the turbulent cold air boundary, giving rise to sightings of huge dust devils and even tornadoes.
New research suggests that those electric fields help the whirlwind lift material off the ground, enabling dust devils to pump enough dust into Earth's atmosphere to possibly affect climate (SN: 9/29/01, p.
The helicopter was from China Lake's Naval Weapons Test Squadron, known as the Dust Devils, whose members provide support research and testing for weapons.