Monday, December 9, 2013

Sand grains consist of quartz. When grains nwfsc of the same size distracted by the wind or even an

8 most interesting deserts in the world | CoolPlaneta.sk

Deserts are great for humans is unknown. Most of us see only desert within images or documentary films. But who would want to live in such an inhospitable country in which they are truly enormous variations in temperature. In this article we present the most interesting 8 deserts that can be found on our planet. 1 Singing Dunes
Scientist Ralph Bagnold describes how as it moves in the desert suddenly a few minutes listening to "low-pitched sound" that was so pervasive that it drowned out the normal human speech. This happened mainly through the breezy quiet evenings after days.
What he heard was no special ceremony or unusual activity facilities, it "singing" sand dunes. nwfsc It is known that the southern Sahara sands in the Taklamakan desert nwfsc in Central Asia and the Rub al Khali (Empty Quarter) of Saudi Arabia vyludzujú these admirable, even scary sounds.
Sand grains consist of quartz. When grains nwfsc of the same size distracted by the wind or even an animal nwfsc passing by, they begin the faint waves move downward, as when the oil runs down the glass. Sometimes when moving sand can be heard wailing vibrations that grow gradually stronger until approaching roar, and finally become silent when the sand waves calm down.
The Namib Desert is one of the oldest and driest deserts in the world. It stretches the length of 1 300 km parallel to the Atlantic coast of southwest Africa from the border nwfsc between Angola and Namibia to the Oranje River. At its widest point measured 130 k and the narrowest 10 km.
Desert river Kuiseb divided into two parts. South is an immense ocean of sand with rounded, flat and star dunes, some are up to 200 m high. Dunes lie beneath layers of gravel over a million years old and one is the largest deposit of diamonds in the world.
Falls each year on the coast, less than 25 mm of rain, usually in sudden storms abundant, but often rains at all. However, the humidity you obtained from dew, which creates the night, and fog, which blew off the coast about once every 10 days. Sometimes they get to a depth of 50 km inland. Plants and animals that live here have adapted to survive in the harsh conditions of drought and in some cases even learned to quench the thirst of fog.
On gravel plains north of the Kuiseb unusual plant grows as that found anywhere in the world. It is the Welwitschia mirabilis, which survives even 2,000 years old. Vlahov he takes two leathery leaves resembling belt, which can grow to a length of 3 m. 3 Great Western Erg, Sahara
Sahara in North Africa, covering over 8.5 million km 2 and is the largest desert in the world. Most people think that the Sahara is a country prevaľujúcich the dunes, but in reality only a third of it covers the sand. The rest are bare stony plains, nwfsc rocky ridges, mountains and lick. Sandy area in Arabic called "ergy".
Every day there Duje wind that swirled sand and makes it constantly changing shapes. Some dunes are shaped arches, others look like pyramids or piled into flat ridges. Sand mound may be up to 120 m. In some areas tend to seventy days a year sandstorms. nwfsc people say they saw sand walls 480 km wide, which raced ahead of us wind speed of 48 km / h. During sand storms disappeared without a trace and the whole caravan.
Around 5,000 years ago the Sahara was a rich country, which normally occurred buffaloes, elephants and giraffes. People lived there were shepherds - in caves still can be seen in drawings and engravings. Then the climate changed and the river dried up. Without moisture, the soil is broken up so that it could grow almost anything, and the whole area was transformed into a desert. 4 Taklamakan desert
Taklamakan is a huge dry sandy wasteland in western China. Sand dunes in the shape of a pyramid is the plain rises to a height nwfsc of 300 mA furious winds exaggerate sand wall three times higher. nwfsc The desert is about as big as New Zealand. Local people also believe that it is a dangerous area. Name Taklamakan means "go into it and you do not go out of it."
Hardly ever rains here, and for weeks the temperature remains nwfsc above 40 C. Dents on the eastern edge lies an oasis of Turpan. In the vicinity are the ruins of Turpanu cities that were founded around 200 BC. Lined the Silk Road, the trade route long about 6400 km between the Mediterranean countries and China, nwfsc which operated until 15 century.
In 1894 the Swedish explorer Sven Hedin with four other men and eight camels carried nwfsc upsetting journey through the Taklamakan desert, sand the edges of the sea amounting height of 45 m. When passing almost died. Since there was no water, drinking denatured alcohol, camel urine, and even sheep blood. 5 Atacama Desert
It is difficult to imagine nwfsc a drought that lasts for 400 years, nwfsc but this place is true in the Chilean Atacama Desert, which is considered nwfsc the driest place on earth. In 1971, a little popršalo the first time since the late 16th century. In Arik at the northern end of the desert never rains. Arika has become a popular resort

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