Sentences with phrase «exposed water ice»

While exposed water ice would not be stable at the surface of Ceres at its relatively close distance to the Sun, water and ammonia do appear to be bound up in crustal minerals on the asteroid's surface.

Last year the Herschel Space Observatory detected wisps of water vapor around the dwarf planet, and since its arrival at Ceres, Dawn has imaged oodles of highly reflective bright spots on the Cereian surface that may be sites of exposed water ice.

Alice also documented a surprising lack of exposed water ice on the comet's surface and identified an extremely volatile, unexpected gas in the comet's atmosphere — molecular oxygen.

[2] It has been suggested that the highly reflective material in the spots on Ceres might be freshly exposed water ice or hydrated magnesium sulphates.

Not exact matches

Hints of the special phase, called superionic ice, appeared in water ice exposed to high pressures and temperatures, researchers report February 5 in Nature Physics.

Any parts of the bed this low are easily exposed to ocean water, allowing the ice sheet to weaken from below as the ocean water warms.

Now, researchers have exposed a more accessible analog for extraterrestrial life habitats: microscopic pockets of salt water in the Arctic Ocean's winter ice.

Things get otherworldly at the rear of the lab, where the researchers create temporary caves of dirty blue and black ice by blasting through an exposed ice wall with hot water for at least 24 hours.

On Pluto, a slurry of nitrogen and water ice melted by subsurface heat stands in for lava, the team suggests, freezing solid once it is exposed at the surface.

The deposits are exposed in cross section as relatively pure water ice, capped by a layer one to two yards (or meters) thick of ice - cemented rock and dust.

At some of them, the exposed deposit of water ice is more than 100 yards, or meter, thick.

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.

The melting of sea ice is exposing more ocean waters in the Arctic, but they are showing a limited ability to dispose of CO2, according to a new study

Worse still, in places like west Antarctica, ice sheets rest on land that is below sea level, and so could be exposed directly to warm water.

«The sea ice cap, which used to be a solid sheet of ice, now is fragmented into smaller floes that are more exposed to warm ocean waters.

However, on January 12 in Science, Dundas and colleagues reported finding eight slopes where layers of water ice were exposed at shallow depths (SN Online: 1/11/18).

Warmer temperatures melt the Arctic ice and exposes water, which absorbs more sunlight than ice.

As climate change causes sea ice to shrink — and new waters open to human exploration — this single - tusked cetacean will likely be exposed to new noises and new threats.

These blooms, which turn the sea from deep blue to lush green, begin sometime in November in a large polynya (an opening in the ice) in the Ross Sea when the liquid water is exposed to sunlight.

As a result of atmospheric patterns that both warmed the air and reduced cloud cover as well as increased residual heat in newly exposed ocean waters, such melting helped open the fabled Northwest Passage for the first time [see photo] this summer and presaged tough times for polar bears and other Arctic animals that rely on sea ice to survive, according to the U.S. Geological Survey.

And, worryingly, the research suggests that as these glaciers melt and retreat backward, the shape of the seabed will continue to expose many of them to warm ocean water for hundreds of miles as the ice moves inland.

The researchers had expected the ocean to play a bigger role in eroding away the coastline, as it has elsewhere — especially as climate change is causing more Arctic sea ice to melt away, leaving the surface of the water exposed.

If they begin to melt, however — particularly as they're exposed to warmer ocean water — the shelves become thinner and the grounding line begins to retreat backward, causing the glacier to become less stable and making the ice shelf more likely to break.

Because so much water was stored on land as ice sheets, sea levels were likely 120 meters lower than today, exposing the bottom of what is now the English Channel.

As the paper suggests, one could be the evaporation of surface waters that have become exposed because of sea ice loss in the region, he added.

This creates thicker, longer - lasting ice, while exposing surrounding water and thin ice to the blistering cold winds that cause more ice growth.

With Arctic ice retreating more and more as local summers heat up, exposing ever more cold northern waters to warming sunshine — along with a host of other regional changes — it remains to be seen exactly how sensitive global climate really is.

This is an important discovery since it exposed that water ice was considerably more widespread than what was hypothesised.

Scientists already know that receding sea ice allows solar energy to warm exposed water rather than reflect back into space, but blooms of algae could make matters even worse.

Because the temperature of Ceres is relatively warm (between -93 ℃ and -33 ℃), water - ice exposed at the surface would rapidly convert into a gas in such a low - pressure environment.

So the discovered traces of water - ice suggest some underground ice was recently exposed and that there must be some mechanism to explain how the surface was disturbed in this way.

During glaciation, water was taken from the oceans to form the ice at high latitudes, thus global sea level drops by about 120 meters, exposing the continental shelves and forming land - bridges between land - masses for animals to migrate.

But when sea ice melts, it exposes the darker surface of the underlying water, which absorbs solar energy.

The underlying logic is sound: as sea ice melts, it exposes darker ocean water, which absorbs more of the sun's heat, causing the water temperatures to increase.

The thickness of the remaining, multi-year ice, along with its geographic location, will make it more difficult to melt than the ice that was spread across the Arctic, and exposed to Pacific and Atlantic ocean currents, along with runoff from fresh water rivers.

Impact craters at many latitudes sometimes expose thin ice layers a foot or so beneath Mars» surface.132 «At polar latitudes, as much as 50 percent of the upper meter of soil may be [water] ice.»

At this pit on Mars, the steep slope at the northern edge (toward the top of the image) exposes a cross-section of a thick sheet of underground water ice.

They suspect that the methane ice - rich surface on Pluto may be sublimating away into the atmosphere, exposing a layer of water - ice underneath.

Rock salt and other salt - based ice melters contain sodium chloride or potassium chloride which can heat up to 175 degrees when exposed to water, ice, and low temperatures.

Once the water is completely frozen, peel back the paper from the top of the cup to expose a half - inch to 1 inch of ice.

Some pet parents casually mention dropping ice cubes into their pet's water bowl, while others create urgent - sounding blog posts that seem to suggest we are killing our cats by exposing them to a couple ice chips every now and then.

Glacial ice that floats in the water is only 10 percent exposed, the remaining 90 percent is under water.

The physical processes by which energy might be added into the glacier material include: (A) convection between the glacier surfaces and local surrounding atmosphere and water, (B) direct radiation onto the exposed surfaces of the material, (C) addition of material that is at a temperature higher than the melting temperature onto the top of the glacier (rain, say), (D) Sublimation of the ice directly into the atmosphere, and (E) conduction into the material from the contact areas between the glacier and surrounding solid material.

The strong winds from the south can push the ice further north into the Central Arctic, exposing the open water and releasing heat to the atmosphere from the ocean.»

What a great gift to have a reliably ice - free Northwest passage for 2 - 3 months per year (it can't be much more than that, what with long sunless winters and efficient IR emissive cooling from exposed water).

(He was using a board to test the edge of a «lead» in the ice exposing water that is 29 degrees Fahrenheit and about 14,000 feet deep.)

The smaller the lid gets — because warmer water is eating away at its edges and its underside — the more that warmer water is exposed to the local air mass, the less that air is cooled by contact with ice.

The exposed open water caused by the wind divergence may absorb some additional sunlight and melt more ice than usual over the next few weeks (temperature - albedo feedback)[related NASA animation], but given that the sun is well on its way to setting for the winter, I think this effect will be fairly minimal.

[The move] is aimed at avoiding big ecological disruptions as the expanding summer retreats of sea ice on the Arctic Ocean expose virgin waters.

My take on this is that in August the Arctic Ocean's ice carapace reaches its minimum and consequently the maximum surface area of the coldest sea water on the planet is exposed to the atmosphere.