In Russia, more than 2.5 million of the rivers, creeks and streams.The longest river is considered the Ob (from the Irtysh), its length is 5410 kilometers.Then comes Cupid with Argun - 4444, and, in fact, the beautiful Lena, who without tributaries stretches for 4400 kilometers.These rivers are not only the major rivers of the country, they are among the ten longest rivers in the world, occupying, respectively, 5th, 9th and 10th place.
Causes
Natural waterways ever to flow directly, because the flow path, the aspirant by gravity from a high point to a low, always found a lot of insurmountable obstacles in the form of a non-blurry soil (rock or lifting tectonic layers), etc..Stumbling, flow tempted to shore, resulting in a bend of the river.If the river is not winding on a large segment of the path, we can confidently say that this is a channel box which should be well fortified, because otherwise the flow of water will dilute it, and again will be formed bends and loops.
scientific explanation
first explained the regularity of formation of meanders and bends, oddly enough, Einstein.It's a complicated binding process that superficially resembles a spoon stirring tea leaves in a glass of water.There are detailed scientific theories about how the bend of the river is formed.Popularly it is possible to explain something like this.Make sure the flow path will fall, even the smallest obstacle (deviation from the mean fluctuation is called), in which the water begins to beat with great force, washing away all the rock and shifting in the opposite direction.On the river bend is always abrupt and steep coast opposite - flat, usually with reclaimed sand.The water flow hits the break and, starting from him, seeks diagonally, bypassing formed, usually very beautiful, natural beach, to the opposite shore.It all starts from the beginning - the water washes away has the opposite border of land and stream.The formation of bends lasts a very long time - a century.Most of natural channel, paved river (or rather, its segment), - that's what the bend of the river.
meaning of
The word has several synonyms - zigzag twist, bend, bend.Most often the term is used in relation to the river, and here there are two definitive word - meander and izluka.Sounding name leaves no doubt about where the name.Bending or bend of the river, resembles the shape of the ancient formidable weapon - a bow.
Meander also got its name from the ancient unusually meandering river flowing on the territory of modern Turkey.Actually, the term refers to the smooth curves of lowland rivers.
Similarities and differences meanders and bends
Meanders are wandering, that is continuously ongoing streams often change its course, the old sections which dries, called oxbows.But not always the word "bend" is identical to the concept of "square wave".They coincide only in lowland rivers in the smooth flow of the watercourse.
himself bending, formed in the way of a watercourse has a characteristic shape of its name.When the loop is quite deep, a plot of land enclosed in it in the form of the peninsula, called spurs, and the distance between the start and end points of the bend is called cervical bend.Shallow peninsula called knee.
charm of the phrase
infinite number of paintings of various artists in the world dedicated to this haunting landscapes like bend of the river.Not the most beautiful, but surprisingly shows exactly what can make a loop river, it is a painting of Thomas Cole (1801-1848), "the Connecticut River Bend".The name of this beautiful section of the water flow is the title of the popular 50s American film with a handsome James Stewart in the starring role.
Immediately we can recall two novels entitled "River Bend", one of whom wrote the American Norm Newcomb (they are very fond of beautiful names).
about romance, concluded in these words suggests literature, including poetry.It is often stipulated story about mermaids, rest on the sloping bank of a meander.Scenic, dear to bend the watercourse - it is not only very beautiful, but also symbolic of the Russian people - "... island for a quick bend of the river - the Motherland!".
