Reasons for the formation of permafrost.

There are regions on our planet in which the soil cover does not thaw during the summer period, the ice remains underground, and a new winter begins. This can go on for tens of years and even thousands of years. These regions are called permafrost regions. The winters here are very long and frosty, the snow cover is small, and the summers are short and cool, the soil has time to thaw only by a few tens of centimeters, and the water formed during the melting of the snow cover does not find an outlet in most cases, since there is no drainage and ice in the soil. does not allow water to seep, and this area becomes swampy. With the arrival of frost, this moisture on the surface of the earth freezes again.