NEW YORK: Mars has thousands of glaciers buried beneath its dusty surface, enough frozen water to blanket the planet with a 3.6-foot(1.1- metre) thick layer of ice, scientists said on Wednesday.
The glaciers are found in two bands in the mid-southern and mid-northern latitudes. Radar data, collected by Mars-orbiting satellites, combined with computer models of ice flows show the planet has about 5.3 trillion cubic feet (150 billion cubic metres) of water locked in the ice, according to a study published in this week’s issue of the journal Geophysical Research Letter.
“The ice at the mid-latitudes is therefore an important part of Mars’ water reservoir,” Nanna Bjornholt Karlsson, a researcher at the University of Copenhagen’s Neils Bohr Institute, said in a statement.
Scientists have been trying to figure out how Mars transformed from a warm, wet and presumably Earth-like planet early in its history into the cold, dry desert that exists today.
Billions of years ago, Mars, which lacks a protective, global magnetic field, lost much of its atmosphere. Several initiatives are under way to determine how much of the planet’s water was stripped away and how much remains locked in ice in underground reservoirs.
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