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- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
NASA describes this formation as “a soft, easily eroded deposit that extends for nearly 1,000 kilometers along the equator of Mars.”
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Scientists believe the MFF was most likely formed by wind-blown dust or volcanic ash.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
The formations could have formed after volcanic activity estimated to have taken place up to 3.8 billion years ago.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Images of the area show raised areas that scientists thought in the past might contain dust blown around the planet by wind over many years.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
But the new research used newer data collected by the orbiter’s MARSIS instrument. It is “a subsurface radar sounder” with a 40-meter-long antenna
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
The MARSIS instrument is designed to send radio waves to an area scientists choose.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
It then attempts to listen to and examine echoes produced by the radio waves.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
The echoes help researchers recognize where water or ice might be, NASA explains
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Scientists say any water identified near the surface results in stronger signals while the presence of ice or other materials would produce weaker signals.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
The team said MARSIS readings suggest the MFF area of Mars contains a large amount of water ice rather than wind-blown dust.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Thomas Watters of the U.S. Smithsonian Institution led the new research.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
His team’s findings were recently published in a study in Geophysical Research Letters
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
He said in a statement the radar data showed the deposits in the MFF area were even thicker than earlier measurement estimates had shown.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
The researchers said the data showed the examined deposits extended beneath the Mars surface to depths up to 3.7 kilometers.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
They seemed to contain layers of dust and ice, all topped by a protective layer of dry dust or ash.”
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Earlier data examinations of the MFF area found similarities in the electrical properties of deposits there to ice-rich deposits found in the planet’s north and south
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
poles. The latest MARSIS data strengthens this evidence by suggesting similarities between deposit layering in the MFF and the planet’s poles.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
“The radar signals match what we’d expect to see from layered ice,” Watters said.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
He added that the radar waves were found to be “similar to signals we see from Mars’s polar caps, which we know to be very ice rich.”
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
It is not the first time scientists have discovered strong evidence for the presence of water ice on Mars.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
But the researchers say the latest study suggests the largest amount of water ever identified in the MFF area.
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
They estimated the total amount of water contained there would be enough “to cover the surface of Mars to a depth of about 1.5 to 3 meters.”
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Colin Wilson is a project scientist with the Mars Express mission. He said while the new finding is exciting, it also “raises as many questions as answers.”
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
He continued, “How long ago did these ice deposits form, and what was Mars like at that time?”
- Public domaingeneral-american
New Evidence Suggests Large Water Ice Supply near Mars’ Equator
Wilson said if confirmed to be water ice, the large deposits “would change our understanding of Mars climate history.”
Source badges: Public domain · Creator video · Digital presenter · Reference recording. Literary passages are public domain. Studio notes are not spoken in the audio.