Sentences with phrase «ice sheet edges»

«Most ice cores are collected from the middle of the ice sheet where it rarely ever melts, or on the ice sheet edge where the meltwater flows into the ocean,» Karina Graeter, the lead author of the study as a graduate student in Dartmouth's Department of Earth Sciences, said in a statement.

Unlike the formerly - glaciated regions of the Northern Hemisphere, 98 % of Antarctic bedrock remains covered by ice and the ice sheet edge is fringed by extensive ice shelves; this hampers the collection of data on ice history and introduces substantial uncertainty in reconstructions.

This small outlet glacier south of Jakobshavn Isbrae is moving ice from the interior of the ice sheet out to the ice sheet edge (top right), where the ice calves off into the ocean.

Not exact matches

-- On a lower speed, add eggs one at a time and vanilla until well incorporated — Increase mixing speed to high and let it go for 10 minutes — the mixture will become really pale and will almost double in size — In a medium sized bowl, whisk together flour, baking powder, baking soda, and salt — When 10 minutes are up, add flour mixture slowly until just combined, about 45 - 60 seconds — Chop up and mix together all of your baking and snack ingredients in a small bowl, and fold into batter with a spatula until just incorporated — Using a medium - sized ice cream scoop, portion cookie dough on parchment paper - lined cookie sheet and wrap the entire thing tightly with plastic wrap — Refrigerate for a minimum of 1 hour and up to 1 week — Heat oven to 400F and arrange cookies on cookie sheets at least 4 ″ apart — Bake 9 - 11 minutes, until they are golden in color and slightly brown along the edges — Cool the cookies completely on the sheet pan (or just eat them immediately...)

1) Mix flour, butter and icing sugar in a bowl using two knives to cut the butter until the mixture resembles fine breadcrumbs 2) Add in the egg yolks and vanilla extracts and mix well, then add iced water until the dough starts to come together 3) Shape the dough into a ball on a cool, flat, floured surface 4) Flatten dough into a disc and then wrap in plastic wrap, and chill in the refrigerator for at least 30 minutes 5) Meanwhile, peel, core and slice the apples into as thin slices as possible 6) Mix sugar and ground cinnamon powder with sliced apples and let it rest for a while 7) Pre-heat oven to 180 deg cel 8) Once dough has chilled, roll pastry dough on a sheet of parchment paper until it has expanded to the size of the tart mold (I used a rough mold the size of a large pizza) 9) Leaving at least an inch of dough free, arrange apple slices by overlapping them slightly in the shape of a circle, starting from the outermost part of the circle, until you reach the inside 10) Fold the edges of dough over the filling and then sprinkle the dough with a bit of sugar 11) Bake for about 40 - 45 minutes, or until the crust is golden brown and the apples are soft 12) Serve warm, with a side of whipped cream or ice cream (optional)

The Dry Valleys are a line of nearly snow - and ice - free valleys in the West Antarctic Ice Sheet at the edge of the Ross Ice Sheice - free valleys in the West Antarctic Ice Sheet at the edge of the Ross Ice SheIce Sheet at the edge of the Ross Ice SheIce Shelf.

The Antarctic ice sheet was expected to grow, with increased snowfall compensating for melting around the edges.

Over the current century, the model projects that the average albedo for the entire ice sheet will fall by as much as 8 percent, and by as much 10 percent on the western edge, where the ice is darkest today.

The edge of America's ice sheet — marked by a line of rubble called the terminal moraine — ran along Long Island.

But the thing is, [the ice sheet] kind of stops right there at the edge [of South America], especially down around Cape Horn and those islands down there — those were not glaciated at last glacier maximum.

«The ice shelf generally breaks at points that are between a half and full thickness of the ice sheet from the edge,» summarises Christmann.

Floating ice shelves mark the outermost edges of an ice sheet and line nearly half the Antarctic coastline.

Antarctica's great ice sheet is losing ground as it is eroded by warm ocean water circulating beneath its floating edge, a new study has found.

Research by the UK Centre for Polar Observation and Modelling (CPOM) at the University of Leeds has produced the first complete map of how the ice sheet's submarine edge, or «grounding line,» is shifting.

The apparent decline is greatest around the ice sheet's edges, but it also is occurring in the high elevation interior known as the dry snow zone, where the reflectivity is effectively reset each winter by new snowfall.

Highlights included field trips to the ice edge and Bratina Island, an upside - down piece of seafloor now frozen in the ice sheet, where we collected samples from hypersaline ponds filled with all domains of life: archaea, bacteria, and eukaryota.

The research team found the evidence confirming the stability of the East Antarctic ice sheet at an altitude of 6,200 feet, about 400 miles from the South Pole at the edge of what's called the polar plateau, a flat, high surface of the ice sheet covering much of East Antarctica.

Their seaward edges are speeding up, and the ice sheet behind them is thinning.

Melting near the edges of the Greenland ice sheet, where the surface is below 4,000 feet, causes about half of its annual ice loss.

The great ice sheets of Greenland and Antarctica, which rise to over 13,000 feet above sea level, accumulate ice over most of their surfaces and melt only at their lower elevations near the edges.

«There have been many efforts over the years to photograph the edge of the ice sheet, for many purposes,» he added.

Researchers at the University of Washington and the University of Edinburgh used data from the European Space Agency's CryoSat - 2 to identify a sudden drainage of large pools below Thwaites Glacier, one of two fast - moving glaciers at the edge of the ice sheet.

Professor Poinar continues, «Mammoths were much better at adapting to new habitats than we first thought — we suspect that subgroups of mammoths evolved to deal with local conditions, but maintained genetic continuity by encountering and potentially interbreeding with each other where their two different habitats met, such as at the edge of glaciers and ice sheets.»

These new measurements confirm what some of the more pessimistic scientists thought: The melting along the crucial edges of the two major ice sheets is accelerating and is in a self - feeding loop.

Using 50 million laser readings from a NASA satellite, scientists for the first time calculated changes in the height of the vulnerable but massive ice sheets and found them especially worse at their edges.

To track the growth and retreat of ice cover in the region, Miller and colleagues have been hunting for remnants of scraggly mosses along the edges of the island's retreating ice sheets.

Especially in West Antarctica, where much of the ice sheet sits below sea level, complex interactions at the edge of the ice sheet can sensitively affect the rate of ice - sheet retreat.

Ice shelves are floating masses of ice on the edge of the continental ice sheIce shelves are floating masses of ice on the edge of the continental ice sheice on the edge of the continental ice sheice sheet.

This week, the institute announced that Greenland's ablation season, the period when its ice sheet loses more mass from melting along its edges than it does from snowfall in its interior, started on June 6.

Using satellite images and other data, the team studied the edge of the former Laurentide Ice Sheet, a vast expanse of ice that covered two - thirds of North America during the last ice aIce Sheet, a vast expanse of ice that covered two - thirds of North America during the last ice aice that covered two - thirds of North America during the last ice aice age.

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.

The caves in the limestone gorge of Creswell Crags have provided archaeologists with important evidence of human activity towards the end of the last Ice Age when the area was right at the edge of the ice sheIce Age when the area was right at the edge of the ice sheice sheet.

In Antarctica, there is only occasional surface melt in the West Antarctic ice Sheet but the warmer seas around the edges should help unstick ice that has already pushed into the oceans.

This is because a bit of extra heat in summer is a very efficient way to get rid of ice...» applies equally to what appears to be happening with respect to ablation on the low altitude edges of the Greenland Ice Sheice...» applies equally to what appears to be happening with respect to ablation on the low altitude edges of the Greenland Ice SheIce Sheet.

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-?)

Thomas, I appreciate that they are imperfect things to compare, but have you ever seen pictures of the ice pack near the edge of the ice sheet where the melting is happening fastest?

The rates of rapid rise Jim Hansen talks about occurred when large ice sheets covered Canada and the Antarctic ice sheet extended to the edge of the continental shelf.

So, as the leading edge melts, this deformation and filling would be first observed as a thinning of the sheet and, in particular, the trunk or main ice stream channel, as well as an acceleration of the stream.

This is in fact increasingly observed around the edges of Greenland and Antarctica in recent years: outlet glaciers and ice streams that drain the ice sheets have greatly accelerated their flow.

The Greenland Ice Sheet is very similar to the South Pole and the research shows that it too is melting at an accelerated pace around the edges.

Considering what I've learned in the nine years since I got to visit the frigid summit and eroding edges of Greenland's amazing ice sheet, in a final note to Alley here's how I described my reply to the Climate Desk's «Can We Save Greenland?»

Around the edges of the ice sheet, though, there is accelerated melting.

Even prior to any large feedback involving the ice sheets or carbon cycle, the actual rise in sea - level continues to be at the top edge of the envelope of the IPCC's predictions.

But without the ice shelves to impede the flow of glacial ice, typically moving 400 — 900 meters a year, the flow of ice from the continent could accelerate, leading to a thinning of the ice sheet on the edges of the Antarctic continent.

Collecting data from NASA's satellite Gravity and Recovery Climate Experiment, known as GRACE, and GPS measurements of the bedrock on the edges of the ice sheet, the Denmark Technical Institute's National Space Institute in Copenhagen was able to show that crustal uplift due to ice loss has gone up by 1.5 inches between October 2005 and August 2009 along the northwest coast, a change that study co-author John Wahr calls «very dramatic».

Generally yes, but there has been a lot of new information learned since the IPCC Third Assessment Report (e.g., on trends in hurricane intensity, the accelerated melting back of Arctic sea ice, the intensifying deterioration of the edges of the Greenland Ice Sheet, etc.) and Gore's presentation of the science has been updated to account for these, drawing from what are the really highly reviewed and high quality papers by leading scientisice, the intensifying deterioration of the edges of the Greenland Ice Sheet, etc.) and Gore's presentation of the science has been updated to account for these, drawing from what are the really highly reviewed and high quality papers by leading scientisIce Sheet, etc.) and Gore's presentation of the science has been updated to account for these, drawing from what are the really highly reviewed and high quality papers by leading scientists.

-- Susan Solomon, Nature The Long Thaw is written for anyone who wishes to know what cutting - edge science tells us about the modern issue of global warming and its effects on the pathways of atmospheric chemistry, as well as global and regional temperatures, rainfall, sea level, Arctic sea - ice coverage, melting of the continental ice sheets, cyclonic storm frequency and intensity and ocean acidification.

In these areas, the location of the edge of the ice sheet is very sensitive to both ocean condition and the amount of ice fracturing (crevasses or rifts).

For Greenland, the edges are clearly deteriorating rapidly, and the question is how much buildup might be compensating atop the ice sheet.

If a relatively small chunk of ice currently plugging the edge of an ice sheet in Antarctica were to melt, it could release massive amounts of ice into the ocean that would significantly increase global sea level for the next 10,000 years, according to a new report.