On Mars discovered the remains of the last of the polar caps

На Марсе обнаружили остатки прошлых полярных шапок 

Mars Reconnaissance Orbiter

A new study conducted by a group of scientists under the leadership of Stefano Nerozzi.

Scientists have discovered that the deposits under the North polar cap on Mars composed of layers of water ice and sand (the ice in the sediments were very many, so this is probably one of the largest reservoirs of water on the red planet).

This writes the Chronicle.info with reference to rambler.ru.

This ice, as scientists believe, is left of the ancient Martian polar caps, which then appeared, then disappeared under a layer of sand due to small changes in the orbit and tilt of axis of Mars.

A new study conducted by a group of scientists under the leadership of Stefano Nerozzi (Stefano Nerozzi) from the University of Texas at Austin. Experts have studied the data collected by the orbiting Mars Reconnaissance Orbiter, but rather its SHARAD radar that can probe layers up to the depth of several hundred meters.

The researchers found that sediments under the Northern polar cap of Mars is composed of layers of water ice and basalt sand. If this ice were many, and as scientists believe, this is one of the largest known reservoirs of water on the red planet (so, according to the calculations of researchers, if we melt all the ice, enough water to cover the entire surface of the planet with a water layer depth of about half a meter).

Scientists have discovered an unusual phenomenon on Mars

Layers of sand and ice in ancient sediments, by assumption, researchers have arisen due to cycles of warming and cooling that are associated with small changes in the orbit of Mars and the tilt of its axis (during the cold periods, the caps increased, and in the warmer their covering layer of sand).
Works devoted to the study of ancient polar caps of Mars, was published in the journal Geophysical Research Letters (1, 2).

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