What causes an oasis in the desert?

Oasis is a fertile place in the middle of the desert, the island of life in the ocean of temperature extremes. Any oasis always contains one or more sources. Oasis allow you to survive long treks deserts. In large deserts, such as Sahara, cities clump around water sources such as oases and rivers.

What causes an oasis? Oasis is actually a place in the desert, where the height is low enough, that the water level is directly below the surface, resulting in the presence of springs. Even in the desert it sometimes rains, and it produces the water surface just above the ground, usually several hundred feet below the surface. The sand is very porous, so most of the water runs directly through it and down to the background.

The desert consists of many millions of tons of sand. There is only one natural force capable of moving it in a noticeable amount - wind. Although in the average storm of dust, ten cubic tracks (3.05 cubic meters) of the air only holds an ounce of sand, cubic miles (1.6 cubic km) of the air can move about 4,600 tons, leading to the eagleAzné erosi. A heavy storm is capable of moving up to 100 million tons of sand and dust.

In some areas where a large amount of sand moves through the storms, erosion exaggerates down to the water surface and put it just below the surface. The seeds planted in the ground are able to portray and extend the roots to the humid ground and produce an oasis.

Sometimes the oasis produced by the wind can be very large when the huge areas of the desert are clean storms. For example, the Great Oasis Kharga Oasis in Sahara is over 100 miles (161 km) and 12 to 50 miles (19.3 to 80.5 km). The oasis was made when erosion caused the edges of the great depression to immerse the water level.