How do glaciers move? Detailed answer

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How do glaciers move? Detailed answer

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How do glaciers move?

It should not be thought that glaciers existed mainly during the Ice Age. They are still quite common today. The most common are alpine glaciers. They were named after the Alps - a mountain system in the center of Europe, where there are more than 1200 such glaciers. And in the high mountains in the south of the Alaska Peninsula there are several tens of thousands of them! Alpine, or as they are also called, valley glaciers slide down from snow-capped peaks like mighty ice rivers.

The source of a huge amount of snow, which mostly forms alpine glaciers, is the upper part of the valley, shaped like an amphitheater, enclosed by steep mountain slopes. Snow is blown away by the wind and rolls down in the form of avalanches. In summer, it does not have time to melt, and every year the snow cover becomes thicker. In the end, the lower layers of snow compact, thaw, freeze and turn into ice.

Under the weight of snow located higher up the slope, the mass of ice gradually begins to slide down into the valley. As the glacier descends below the snow mass of the mountains, it begins to melt.

When the melting process proceeds no faster than the movement of the glacier, the latter remains in one place. If the situation is the opposite, then the glacier, as it were, "turns back" and returns to the upper part of the valley. In cases where alpine glaciers slide off the slopes of mountains located on the sea coast, huge blocks of ice eventually break off from them and become floating ice islands - icebergs.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What is a daydream?

Who among us has never "daydreamed"? This phenomenon is not devoid of pleasantness. We see ourselves accomplishing something extraordinary, such as enjoying a great triumph, or completing something very desirable for us, acquiring the thing we dream about.

A waking dream is a form of dream that only occurs while we are awake, while normal dreams occur at night when we are sleeping. That's the whole difference. After all, both of these phenomena occur when a person is relaxed to such an extent that what is happening around him does not exist. His thoughts in this case can be carried away wherever they please. For this reason, strange people, animals often appear in both types of dreams, or situations arise that do not exist in real life.

Night dreams are even more unusual and far from reality than waking dreams, because sleeping people almost completely lose control over the flight of their thoughts. It is interesting to note that children have two types of waking dreams that adults do not have: dreams of an “imaginary friend” and dreams of an “adoptive”. A child who has no one to play with can invent such a friend. And another child likes to imagine that he is not a simple person, but in fact a prince or princess, and that his parents are a king and queen. Such a child begins to have waking dreams that he lives with foster parents and that royal blood flows in his veins.

From all this we can conclude that our waking dreams express what we need or want. Our night dreams usually express not only this, but also what frightens us. In both cases, a dream is not something "outside", but an expression of a person's inner world: his desires, needs, fears, desires, and so on. Sleep gives them the opportunity to break out. Waking dreams can give a person what he wants, but what he is deprived of in real life. In some cases, they help him plan his actions in real life.

Night dreams, making a person forget about the troubles of real life and embodying his dreams, help him sleep until he rests. A dream is what you tell yourself. If a dream has any "meaning", it is only for the person who sees it.

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