|
|
|
BUILDING and destructive power of WIND |
|
|
|
|
Written by Administrator
|
|
Monday, 05 October 2009 |
 Wind particle can move, move, roll, float. Wind destroys, transports and builds. The size and course of these activities depend on the strength and the prevailing wind direction. Activity is destructive wind deflation, Abrasion.
Deflation - or stripping away of the material causes a lowering of the land surface, revealing not yet weathered rock solid. As a result of deflation are formed: bowls deflationary, so. Top witness, gutters, basins, bathtubs, formed furrows, houses polished by particles carried by the wind.
Abrasion - a process by which wind-transported particles strike the rock of various sizes of rocks which stand in their way, grinding and polishing them. Abrasion is strongest close to the ground, where the wind carries the most heaviest particles of rock. Rapid destruction are weathered, less resistant parts of the rocks, so that the original form of sculptures often take on fanciful shapes, such as rocky ridges.
Building a wind activity are:
ACCUMULATION - deposition of transported material caused by the shrinking force of the wind or obstacles encountered on the road.
First deposited sand from coarse to increasingly smaller, later and most of seats dust settle.
In drylands, deflation, a stripping away of the material causes the formation of the deserts of stone, called Hamada (much of the Sahara and Tibet, part of the Rocky Mountains), or gravel, called serir (a significant part of the Sahara, part of the desert in Australia). Sandy deserts - Ergi formed in areas of sand accumulation (the great Erg Occidental and the eastern Sahara, the Australian desert and sandy Victoria, Atacama, Kara Kum, Kyzyl Kum).
On the sandy deserts of the accumulated wind creates sand dunes. They come in different sizes and different speeds to it depends on the strength, quantity and consistency of sand. In areas with dry and hot deserts are formed dunes . They shape, small arms facing in the direction of the wind ahead of the dune. Dunes not only occur in the deserts, it is often located on the shores of the Sea (coastal dunes) and in the plains of rivers and (inland dunes) accumulation of dust from the deserts is often a great distance from them, usually in semi-dry zone. The dust retained by the herbaceous vegetation cover up huge loess (loess Plains People's intelligence have been part of the sandy desert Goby.
|
|
Last Updated ( Tuesday, 27 October 2009 )
|
|
|
|
Who's Online
We have 3 guests online
Is the end of oil coming?
But it is not a comprehensive sources of oil, but replacing it with renewable energy sources. During last year's fuel crisis, Xenon Kiteboards bÃlé vÃno used cars again began to pay greater attention to other fuel sources for vehicles, but also for motor boats and yachts. Cost of gas and diesel at petrol stations jumped dramatically, and even more on the docks. Therefore, mainstream Seniorenpflegerinnen Seniorenpfleger polnische cursos de ingles en dublin consumers began to think of an alternative fuel may not be such a bad idea. Search for solutions and, therefore, go in another direction than oil. Even the diesel engine easily be adapted to burn other fuels than petroleum. Have forgotten that the brilliant Rudolph Diesel designed his engine to use it for the first time in 1900, the diesel is not a. .. groundnut oil. It is therefore hoped that the russian courses kiev posizionamento Google marketing online world will remember that, apart from oil extracted in the politically troubled regions, there are alternative sources of energy.
Sea whirlwind
Sea whirlwind - trump water and air caused by the strong convection within clouds. Creates a strong current of descending air funnel that extends under the base of the clouds. Since the rotating column of air inside the pressure drops, usually followed by condensation, so the column is opaque and has a color from white to dark gray, York County Real Estate Files Downloads Links patrocinados no Google depending on the lighting. Internal downdraught is surrounded by a sight ascending current. When the hopper reaches the sea, becomes a trunk water main. Formed flattened measure ( "dark spot"), in which internal downdraught touches the water. Trumpet marine are not uncommon, but are usually relatively weak and most Zaun carfinance-offers.co.uk Mortgage dispersed when it comes to land.
|
