What is the Definition of Barchan?

What is the Definition of Barchan?

crescent-shaped sand dune which form in desert areas experiencing generally constant winds. The 'horns' of the crescent point downwind, having moved ahead more rapidly, where they become sheltered and stable. Sand moves up the windward side and collapses down the leeward side which is steeper. This net movement of sand from the windward to the leeward side causes the dune to move forwards.

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Label: Geography
Theme: Dictionary of Geography Terms

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What is the Definition of Barchan in Geographic Terms?

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What is the meaning of Sugar

Type of carbohydrate chemically based on carbon, oxygen, and hydrogen.


What is the meaning of Sulfur Dioxide

A gas produced from volcanic eruptions, ocean spray, organic decomposition and the burning of fossil fuels. Sulfur dioxide is a component in the creation of acid precipitation. This colorless gas has the chemical formula SO2.


What is the meaning of Sulfate Aerosol

Type of solid compound commonly found in the atmosphere. These particles play an important role in reflecting, absorbing, and scattering incoming insolation. The source of these compounds is both natural and human-made. Most of the human-made particles come from the combustion of fossil fuels.


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