Sentences with phrase «subsurface ice»
"Subsurface ice" refers to ice that is located beneath the surface of a material, such as soil or a planet. Full definition
This remarkable correlation is supported by observations by other scientific teams who had already observed traces of glacier melting and retreat, as well as evidence of subsurface ice, in the former polar regions.
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It originally stated that Titan's contraction was due to subsurface ice melting instead of freezing in the subsurface ocean.
The scarps directly expose bright glimpses into vast underground ice previously detected with spectrometers on NASA's Mars Odyssey (MRO) orbiter, with ground - penetrating radar instruments on MRO and on the European Space Agency's Mars Express orbiter, and with observations of fresh impact craters that uncover subsurface ice.
Impacts exposing subsurface ice deposits and generating hydrothermal activity are one possible explanation for the bright spots and Herschel's water vapor; «cryovolcanoes» that erupt volatiles such as water rather than rock are another.
Meanwhile, a team at Los Alamos National Laboratory has used another Odyssey instrument to reveal that subsurface ice seems to be distributed widely across the Martian surface.
It is also possible that volcanic activity on Mars will occasionally melt subsurface ice creating large lakes.
The icePod system will consist of a suite of imaging sensors mounted in an external pod carried on New York Air National Guard LC - 130's to map the surface and subsurface ice topography of ice sheets, ice streams and outlet glaciers.
In April, an Italian radar instrument will search for vast reservoirs of subsurface ice, following up on hints from NASA's Mars Odyssey orbiter.
«But what is perhaps even more interesting is that most of the [emission] jets are not due to surface ice, they're due to subsurface ices that somehow permeate that surface,» says Yeomans.
The researchers will conduct ground - penetrating radar and passive seismic surveys of the still - intact ice shelf, looking for shifts in the subsurface ice.
Sites of small meteorite impacts just a few months old are most likely to still show traces of subsurface ice.
Meanwhile, the lander will keep digging and analyzing deeper — toward the subsurface ice reported last week (ScienceNOW, 20 June), in search of water's history on Mars.
The Rosetta orbiter will continue to orbit 67P for the next 13 months, monitoring the comet as it draws closer to the sun and ever more of its subsurface ice sublimes, or outgasses, driving jets of gas and dust.
To assess whether liquid water flowed over the region during the heat spells Mars experiences every 50,000 years, an onboard microscope will examine cracks in the subsurface ice that should form during cold times.
«This also rules out comets, which are rich in both water and carbon compounds, so we knew we were looking at a rocky asteroid with substantial water content — perhaps in the form of subsurface ice — like the asteroids we know in our solar system such as Ceres,» Gänsicke said.
In Earth's solar system, evidence of subsurface ice, ancient valley networks, and even an ancient ocean occurs on the planet Mars.
Questions still remain about the variety of mineral deposits, the depth of the subsurface ice - rock layer, and, of course, the potential for organic material on the minor planet.
«This project got started when we noticed the first «bullseye» depressions in the North Hellas site... The key finding is that both depressions appear to be places where large amounts of subsurface ice were removed.
And the deposits are just a few examples of subsurface ice on the Red Planet; the Science paper notes that one - third of the Martian surface has subsurface ice of some sort.