Sentences with phrase «under ice sheets in»

Not exact matches

While most duck shooters snuggle deeper under the blankets, the Maine seabirder gets up at 4 a.m., drives his boat through swells that wash over the decks and turn them into sheets of ice, sets his trawl line of decoys, anchors in the lee of a ledge and covers his boat with rockweed.

My final checklist was ice cube trays dumped and filled ten times to make sure we had plenty, the crock pot out and turned on with wash rags in the hot water, the pads put under the sheets that would be the «throw away» set.

Usually, narwhals will escape natural predators such as killer whales by stealthily slipping under ice sheets or huddling in spots too shallow for their pursuers, Williams says.

The days were becoming rapidly shorter as winter approached, and I sat back and imagined the Arctic Ocean, just outside the clinic windows, under a sheet of ice in just a few months.

Finding a layer of ash in the ice wouldn't be surprising: the West Antarctic Ice Sheet straddles a broad continental rift that is known to harbor volcanoes, some of them exposed on the surface and others sealed under iice wouldn't be surprising: the West Antarctic Ice Sheet straddles a broad continental rift that is known to harbor volcanoes, some of them exposed on the surface and others sealed under iIce Sheet straddles a broad continental rift that is known to harbor volcanoes, some of them exposed on the surface and others sealed under iceice.

In effect, this UAV survey across the ablation zone of the ice sheet perfectly bridges the gap between people on the ground studying what's under their feet in just one part of the ice sheet, and the satellite data that shows what's going on across the entire ice sheeIn effect, this UAV survey across the ablation zone of the ice sheet perfectly bridges the gap between people on the ground studying what's under their feet in just one part of the ice sheet, and the satellite data that shows what's going on across the entire ice sheein just one part of the ice sheet, and the satellite data that shows what's going on across the entire ice sheet.

In January 2005, for example, Ohio State University geophysicist Ralph von Frese and his colleagues noticed a concentration of higher - than - average - density material in the rock about a mile under the surface of the East Antarctic ice sheeIn January 2005, for example, Ohio State University geophysicist Ralph von Frese and his colleagues noticed a concentration of higher - than - average - density material in the rock about a mile under the surface of the East Antarctic ice sheein the rock about a mile under the surface of the East Antarctic ice sheet.

In contrast to glaciers and ice sheets, which sit on the ground, ground ice sits in the ground, mixed with frozen soil or buried under layers of sedimenIn contrast to glaciers and ice sheets, which sit on the ground, ground ice sits in the ground, mixed with frozen soil or buried under layers of sedimenin the ground, mixed with frozen soil or buried under layers of sediment.

Also in the mid-1990s, another group of scientists proposed the now widely accepted mechanism for how lakes can form under glaciers: Heat radiating from Earth's interior is trapped under the thick, insulating ice sheet, and pressure from the weight of all the ice above it lowers the melting point of the ice at the bottom.

Water that collects in valleys underneath the ice sheet, in the Gamburtsev Mountains, refreezes when it passes under thinner parts of the ice sheet that are less insulated from cool surface temperatures.

Radar images show that water under the base of the ice sheet refreezes into ice, creating a new bottom layer that accounts for up to half the total thickness of the ice sheet in some locations.

They expected the detritus would be safely entombed in the ice sheet for tens of thousands of years, buried ever deeper under accumulating layers of snow and ice.

«It's like a big beach ball under the ice sheet pushing up on it, and the only way to keep it submerged is if the ice sheet is strong,» said Hemingway, a doctoral candidate in planetary geophysics at UCSC and lead author of the paper.

These predictions are limited by a poor understanding of the recent changes observed in the Antarctic and Greenland ice sheets, and a lack of knowledge about the variability of ice sheet behaviour under a warming climate.

But there's liquid water elsewhere in the solar system; it's buried under thick sheets of ice on moons,» Francis Nimmo, a planetary scientist with the University of California at Santa Cruz, told Discovery News.

We suggested that, given the documented flow of water beneath the ice sheet, perhaps sub-glacial rivers carried in the microbes, and Tranter responded, «People would have laughed at you a decade ago, but there is a river system under the ice sheet.

In this aquatic adventure, mankind has been trapped under the ocean by an impenetrable sheet of ice.

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

Under BAU forcing in the 21st century, the sea level rise surely will be dominated by a third term: (3) ice sheet disintegration.

Thus, whatever the contribution of mass loss from the Greenland ice sheet to the huge (4 - 8 m) rise in sea level of the Eemian, it occurred under very strong temperature forcing.

When I was in Antarctica in 1995, what the glaciologists were saying about the WAIS [West Antarctic Ice Sheet], is that its changes will mostly likely take a long time, but there was a wild card, in that there are volcanoes under that ice, and if one were to erupt, things could change very quickIce Sheet], is that its changes will mostly likely take a long time, but there was a wild card, in that there are volcanoes under that ice, and if one were to erupt, things could change very quickice, and if one were to erupt, things could change very quickly.

Air pressure changes, allergies increase, Alps melting, anxiety, aggressive polar bears, algal blooms, Asthma, avalanches, billions of deaths, blackbirds stop singing, blizzards, blue mussels return, boredom, budget increases, building season extension, bushfires, business opportunities, business risks, butterflies move north, cannibalistic polar bears, cardiac arrest, Cholera, civil unrest, cloud increase, cloud stripping, methane emissions from plants, cold spells (Australia), computer models, conferences, coral bleaching, coral reefs grow, coral reefs shrink, cold spells, crumbling roads, buildings and sewage systems, damages equivalent to $ 200 billion, Dengue hemorrhagic fever, dermatitis, desert advance, desert life threatened, desert retreat, destruction of the environment, diarrhoea, disappearance of coastal cities, disaster for wine industry (US), Dolomites collapse, drought, drowning people, drowning polar bears, ducks and geese decline, dust bowl in the corn belt, early spring, earlier pollen season, earthquakes, Earth light dimming, Earth slowing down, Earth spinning out of control, Earth wobbling, El Nià ± o intensification, erosion, emerging infections, encephalitis,, Everest shrinking, evolution accelerating, expansion of university climate groups, extinctions (ladybirds, pandas, pikas, polar bears, gorillas, whales, frogs, toads, turtles, orang - utan, elephants, tigers, plants, salmon, trout, wild flowers, woodlice, penguins, a million species, half of all animal and plant species), experts muzzled, extreme changes to California, famine, farmers go under, figurehead sacked, fish catches drop, fish catches rise, fish stocks decline, five million illnesses, floods, Florida economic decline, food poisoning, footpath erosion, forest decline, forest expansion, frosts, fungi invasion, Garden of Eden wilts, glacial retreat, glacial growth, global cooling, glowing clouds, Gore omnipresence, Great Lakes drop, greening of the North, Gulf Stream failure, Hantavirus pulmonary syndrome, harvest increase, harvest shrinkage, hay fever epidemic, heat waves, hibernation ends too soon, hibernation ends too late, human fertility reduced, human health improvement, hurricanes, hydropower problems, hyperthermia deaths, ice sheet growth, ice sheet shrinkage, inclement weather, Inuit displacement, insurance premium rises, invasion of midges, islands sinking, itchier poison ivy, jellyfish explosion, Kew Gardens taxed, krill decline, landslides, landslides of ice at 140 mph, lawsuits increase, lawyers» income increased (surprise surprise!)

«In places like Iceland, for example, where you have the Eyjafjallajökull ice sheet, which wouldn't survive [global warming], and you've got lots of volcanoes under that, the unloading effect can trigger eruptions,» McGuire said.

Warm ocean water plays a significant role in melting glacial ice from below, and a better mapping of Antarctica's and Greenland's landforms beneath the ice suggests that ocean melting of the glacier fronts may play a more significant role than previously thought as the ice sheets retreat (under a global warming scenario).

Nonetheless, a recent probabilistic assessment based on IPCC projections and expert elicitations on ice sheet behavior assigns a 0.5 % chance that global SLR will exceed 6.3 m by 2200 under RCP 8.5 (46), suggesting that all but the highest committed levels discussed here could be attained in the relatively near term.

Indeed, if we closely look back at the map of the «rising» /» falling» tide gauges in Figure 8, we can see that some areas which would have been under or near the ice sheets during the glacial era show mostly «falling» trends (e.g., Fennoscandia in northern Europe, Alaska in US), while neighbouring areas show mostly «rising» trends (e.g., the parts of northern Europe south of Fennoscandia, northeastern North America).

Outstanding examples of the latter include, in addition to the examples of SRES and ice sheets above, authors» avoidance of any estimates of carbon cycle feedbacks involving tundra or methane hydrate reservoirs; and avoidance of estimations of the degree of implementation of adaptation capacity under particular circumstances.

From KU Leuven and the «department of annoying back - radiation» comes this claim that flies in the face of the «big melt» under «thin clouds» aka nearly clear skies back in July 2012 Clouds play a bigger role in the melting of the Greenland ice sheet than was previously assumed.

Any methane released from under retreating ice sheets is more likely to find its way into the atmosphere than methane released from deep - sea methane hydrates, because the methane - consuming seabed sediments and the overlying sea water are absent in Antarctica.

The piece about the Greenland ice sheet had not a peep about the effect of geothermal activity under the ice sheet and the basal melting that is occurring driving the vigorous subglacial hydrology as outlined in Rogozhina et al, 2016.

«The conditions under which such switches occur should be investigated, as they directly affect the ability of an ice sheet to slide over its bed,» advises Joseph A. McGregor, of the University of Texas at Austin, writing in the same issue of Nature Geoscience.

Filed under headings such as» It's not that bad», the app answers questions on topics ranging from the stability of ice sheets to errors in the IPCC's fourth assessment report.

Both mechanisms are now under control of humans: GHGs have increased far above levels that existed during the past few million years and ice sheets are disintegrating in both hemispheres.

That's because under this much warmth, parts of Greenland and Antarctica - the great polar ice sheets - will slowly melt and waste away like a block of ice on the sidewalk in the summertime.

«The grounding line is buried under a thousand or more meters of ice, so it is incredibly challenging for a human observer on the ice sheet surface to figure out exactly where the transition is,» Rignot explained in a NASA news release.

«There's been a lot of speculation about the stability of marine ice sheets, and many scientists suspected that this kind of behavior is under way,» Ian Joughin, a glaciologist at the University of Washington in Seattle, said in a news release about one of the studies published Monday.

A study published in March 2016, suggests that large parts of East Antarctica's ice sheet can collapse, can do so under Pliocene conditions.

Forecasts of future ice sheet behavior appear even more uncertain: Under the same high — global warming scenario, eight ice sheet models predicted anywhere between 0 and 27 cm of sea level rise in 2100 from Greenland melt.