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Home / Science / Mars was once lashed by heavy rains that carved valleys in the surface of Mars 3.8 billion years ago

Mars was once lashed by heavy rains that carved valleys in the surface of Mars 3.8 billion years ago



Mars has a complex network of river valleys, created billions of years ago by heavy rains that showered the surface of Mars in the distant past of the planet.

The Martian landscape is criss-crossed by a complex network of valleys similar to the fluvial stream channels dug by rivers on Earth.

While most scientists agree that the valleys formed on Mars billions of years ago, it has been difficult to determine the exact source of this water on a probably dry planet for more than 600 million years, such as SciTech Daily reported some time ago

The two main hypotheses are that these geological features were either left behind by subterranean water ice, which flowed out under the influence of the volcanic activity of the planet and repeatedly under the crust, around rivers or massive To form rainfall over a long period of time.

A research team from Switzerland and the United States The United States believes that they have finally solved the puzzle and, as an obvious culprit, points to heavy rainfall.

According to their study, which was published this week in the journal Science Advances the network of valleys is everything skittering About Mars was not caused by re-emerging groundwater, but by large amounts of rainfall affecting the Red Planets showered about 3.8 billion years ago, slashed.

"Recent research shows that there must have been much more water on Mars than previously thought," says study leader Hansjörg Seybold, physicist at ETH Zurich in Switzerland

These massive rains that crashed 3.6 to 3.8 billion years ago, probably in huge slogans While these ancient rivers have been dehydrated for a long time, Seybold says that most of them are likely to "vaporize" into space. English: www.goredsea.com/en_magazine-archiv…december2004 "be the water" could still be found near Mars "- the network of valleys is still preserved and can be observed in various places on the Martian surface.

One such example is Osuga Valles (picture below) south of Eos Chaos – "Chaos" is a term attributed to NASA parts of the rugged and rugged terrain on Mars, which reported Inquisitr recently – which has a total length of 164 kilometers (nearly 102 miles).

This Marsen Valley measures shoelaces and falls of up to 900 meters in some places up to 20 kilometers (nearly 12.5 miles), notes the European Space Agency

  River valley on Mars [19659014] Osuga Valles on Mars.
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<p>        <span class= ESA / DLR / FU Berlin

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Wikimedia Commons / cropped and resized

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To draw their conclusions, the scientists scoured the statistical data of all mapped valleys on the Red Planet and examined the angles at which these valleys branched out and compared them to those on Earth.

Then they turned to earlier studies of the branch angles and learned that river valleys in dry areas – such as those found in Arizona in an area used by astronauts to train for future Mars missions – typically have lower branch angles to have. At the same time, valleys branch out into more humid landscapes, which branch out at larger angles due to re-emerging groundwater, as can be seen in Florida.

Their investigation revealed that the valleys on Mars are very similar to those in drylands regions on our home planet, meaning that they could only have been created by "superficial drainage of (rain) water on the surface of the red planet" and not by underground water flowing from the inside out.

"We find that Mars' nets generally tend to branch at narrow angles to those found in arid landscapes on Earth. This finding supports the conclusion that Mars once had an active hydrological cycle, and that Mars' ore networks were mainly created by flood erosion, with groundwater infiltration playing only a minor role, "wrote the study's team.

So, what? Solved The most plausible scenario is that the Red Planet was once covered by a vast ocean that extended over the northern third of its surface, the Swiss University explains.

"Water evaporated, condensed around the high volcanoes of the highlands south of the ocean and led to heavy rainfall. As a result, rivers formed, leaving traces that can still be seen on Mars today. Function (f, b, e, v, n, t, s) {if (f.fbq) return, n = f.fbq = function () {n.callMethod?
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