Whirlpool. What is a deepening in the bottom relief is

The deepest place of the river bed or other body of water, drilled by a whirlpool or current, is called a pool in the people. What is a deepening in the bottom relief?

Types of maelstrom

Rotating thickness of water can be observed on a variety of water bodies - on small rivers and in the open ocean. It is formed by the sudden expansion of the channel, when the currents of different temperatures and velocities collide. Water, rotating in a small space, rushes to the outer edge of the gyre, forming a recess in the center. On the sea, whirlpools occur when colliding currents, tidal and tidal waves occur. Water in them can move with great speed. In the open ocean the size of the formed funnel can reach several kilometers.

On the river, the water rotation speed is usually equal to the speed of its main flow. Waterworms are typical enough for mountain rivers. They can form deep pits, which are called suvers. Here the water rotation occurs in one direction behind the mole, cape or other ledge. The stream usually moves from below upwards along the rotation axis of the whirlpool. Usually below the dam near concave banks on steep bends there is a whirlpool. What is a natural phenomenon? This is a kind of whirlpool, in which the current is directed down along the axis of the water curvature.

Whirlpools

The nature of their formation is due to the fact that the flow velocity throughout the river flow is rarely constant. It accelerates, slows down, sometimes almost disappears. There is also a reverse flow. On the part of the river called the rapid, it becomes very stormy and fast. The reason for this phenomenon is often the narrowing of the banks, steep slopes. Rapid flow is accompanied by a kind of "boiling" of water on the rapids. Such swirls wash the hole in the bottom, forming a whirlpool. What is a dangerous place - everyone knows. No wonder the very word "whirlpool" is associated primarily with words that conceal the danger: "bottomless", "deep", "dark".

Quiet water, yes pools are deep

A person who finds himself in a quandary or trouble, is often compared to a man caught in a pool. What is a deepening in the relief of the bottom of the pond is best avoided, yet our ancestors knew. According to their beliefs, such a vodka often crushed everything in its path, dragging into its yawn small floating means and ships. Ancient sayings about whirlpools have always been used as a warning about possible troubles. These are the places where all evil spirits should be taken. From such whirlpools stayed away, as it is not always possible to predict where underwater is a funnel that can be pulled to the bottom. In the pools, a lot of people were drowning, as they said before - the devils were dragged to the bottom.

Whirlpools may not be of great danger, but they can not be underestimated. In calm water, the pits formed by them can be deep enough. On the ruts and old men often there are quiet pools. On the banks, where it is shallow, the current is rapid and rapid, and over the whirlpool it is usually slow. The proverb says "quiet water, yes the pools are deep".