Unusual streaks on the slopes of the two impact craters on Mars could be signs of massive avalanches reported in a study in the journal Planetary and Space Science. Planetary scientists suggest that the avalanche could go about a million years ago.
About 15 years ago researchers noticed inside one of the Martian craters in the Northern hemisphere of the planet, long ridge width of from 15 to 80 meters. Outwardly, they were similar to earth moraine — debris of rocks, moved in the slow movement of the glacier. Initially the researchers assumed that Martian glaciers could be formed from carbon dioxide, as temperatures in the region of the poles of the red planet are low enough to keep him frozen, but now scientists have proposed an alternative hypothesis. According to them, the Martian glacier could be formed of water ice, and strips structures in the craters is not a moraine, and traces of Sergey, quickly descended ice avalanches.
A group of researchers under the leadership of Sergei Krasilnikov (Sergey Krasilnikov) from the Institute of Geochemistry and analytical chemistry named after Vernadsky RAS analyzed multi-spectral and radar data of the surface of Mars, published by NASA, and then used this information to create a model of avalanches with using software Rapid Mass Movement Simulation. Simulations and calculations made by geologists, showed that the ice avalanche could really create morenopodobnym ridge on the slopes of the craters.