Sentences with phrase «of the ice sheet at»

Ambient geothermal heat emanating up from the seafloor melts the underside of the ice sheet at a rate of several penny thicknesses per year.

Additional support provided by the Advanced Scientific Computing Research and Biological and Environmental Research programs within the U.S. Department of Energy's Office of Science, along with the Center for Remote Sensing of Ice Sheets at the University of Kansas through National Science Foundation grant ANT - 0424589.

The lakes are fed by geothermal heat that seeps up from the Earth's interior, melting away the bottom of the ice sheet at a rate of several dime - thicknesses per year and liberating water from the ice.

Deep ocean water, which is relatively warm, has been melting portions of the ice sheet at its base.

Rapley presented measurements of the ice sheet at a major climate conference in Exeter, UK.

Those elevations effectively helped them morph two - dimensional photos into a three - dimensional picture of the ice sheet at different points in time.

The latter group then could have moved south of the ice sheets at a later date.

In Andrew Revkin's article today entitled «In Greenland, Ice and Instability», there is the quote: Eric Rignot, a longtime student of ice sheets at both poles for NASA's Jet Propulsion Laboratory, said he hoped the public and policymakers did not interpret uncertainty in the 21st - century forecast as reason for complacency on the need to limit risks by cutting emissions.

Despite the accompanying colder winters, getting melting going during those long hot summers is how we got rid of the ice sheets at high northern latitudes.

Some land movements occur because of isostatic adjustment of the mantle to the melting of ice sheets at the end of the last ice age.

Researchers used data from IceBridge's ice - penetrating radar — the Multichannel Coherent Radar Depth Sounder, or MCoRDS, which is operated by the Center for Remote Sensing of Ice Sheets at the University of Kansas, Lawrence, Kan. — to determine ice thickness and sub-glacial terrain, and images from satellite sources such as Landsat and Terra to calculate velocity.

Not exact matches

Peter Neff, a glaciologist at the University of Rochester who travels regularly to the Antarctic, said ground observations would never tell you the full story of what's going on with ice sheets in that part of the world.

-- 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...)

You can either eat the dough raw, freeze in bite - sized chunks and put into a freezer bag to store for your next batch of ice cream, or bake it on a lined cookie sheet at 350 degrees for about 11 minutes.

They give off a lovely dessert vibe once scooped off the sheet pan (with all their wonderful juices), and would be equally at home alongside a scoop of vanilla ice - cream.

Also, it demands way to much fussiness with the baking stone and ice cubes in a baking sheet at the bottom of the oven!?

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)

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.

According to the Center for Remote Sensing of Ice Sheets (CReSIS), an NSF Science and Technology Center led by the University of Kansas, the melt from Greenland's ice sheet contributes to global sea level rise at a rate of 0.52 millimeters annualIce Sheets (CReSIS), an NSF Science and Technology Center led by the University of Kansas, the melt from Greenland's ice sheet contributes to global sea level rise at a rate of 0.52 millimeters annualice sheet contributes to global sea level rise at a rate of 0.52 millimeters annually.

The plume is far older than the recent period of atmospheric warming; indeed, at 50 million to 110 million years old, it's older than our species and the West Antarctic Ice Sheet itself.

Understanding sea level change in relation to the mass balance of Greenland's and Antarctica's ice sheets is at the heart of the CReSIS mission.

Researchers established the first camp here in 1989, at the start of an international effort that drilled the 3,053 - meter - long Greenland Ice Sheet Project - 2 ice core, retrieving a record of climate over the previous 110,000 yeaIce Sheet Project - 2 ice core, retrieving a record of climate over the previous 110,000 yeaice core, retrieving a record of climate over the previous 110,000 years.

It's the seventh such journey Morris has undertaken since 2004, all of them aimed at measuring the density of the top layer of snow covering the ice sheet.

Murali Haran, a professor in the department of statistics at Penn State University; Won Chang, an assistant professor in the department of mathematical sciences at the University of Cincinnati; Klaus Keller, a professor in the department of geosciences and director of sustainable climate risk management at Penn State University; Rob Nicholas, a research associate at Earth and Environmental Systems Institute at Penn State University; and David Pollard, a senior scientist at Earth and Environmental Systems Institute at Penn State University detail how parameters and initial values drive an ice sheet model, whose output describes the behavior of the ice sheet through time.

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.

But now Jonathan Bamber at Bristol University, UK, has analysed which parts of the West Antarctic ice sheet are vulnerable.

From an appendectomy on the Antarctic ice sheet to the comparative luxury of the new South Pole station, scientist Vladimir Papitashvili talks about his life's work at the poles

Mote was one of 12 lead authors on a chapter of the fifth Intergovernmental Panel on Climate Change report looking at the cryosphere, which is comprised of snow, river and lake ice, sea ice, glaciers, ice sheets and frozen ground.

The only current ice sheets are Antarctic and Greenland; during the last ice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheets are Antarctic and Greenland; during the last ice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice age at Last Glacial Maximum (LGM) the Laurentide ice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Amesheet covered much of Canada and North America, the Weichselian ice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Ameriice sheet covered northern Europe and the Patagonian Ice Sheet covered southern South Amesheet covered northern Europe and the Patagonian Ice Sheet covered southern South AmeriIce Sheet covered southern South AmeSheet covered southern South America.

Estimated changes in the mass of Greenland's ice sheet suggest it is melting at a rate of about 239 cubic kilometres (57.3 cubic miles) per year.

The hope is that the cables could reveal secrets about what's happening underneath the ice sheets, especially about melting at the so - called grounding line, the place where the bottom of an ice sheet meets the slightly warmer ocean.

I spend a lot of time studying the ice sheets at the bottom of the planet — how they form and how they collapse.

«That isn't even close,» Harvard University geophysicist Jerry Mitrovica told attendees yesterday at the annual meeting of AAAS (which publishes Science) in Washington, D.C. «Each ice sheet has its own pattern of sea level rise.»

One way to assess the health of ice sheets is to look at their balance: when an ice sheet is in balance, the ice gained through snowfall equals the ice lost through melting and iceberg calving.

So far, the Ohio State team has finished processing images from about one quarter of the Greenland Ice Sheet, representing a tiny portion of the data already stored at Minnesota, and about one year's worth of work and computing for the research team.

When the team looked at the overall balance between the radiation upward from the surface of the ice sheet and the radiation both upward and downward from the upper levels of the atmosphere across all infrared wavelengths over the course of a year, they found that in central Antarctica the surface and lower atmosphere, against expectation, actually lose more energy to space if the air contains greenhouse gases, the researchers report online and in a forthcoming Geophysical Research Letters.

The drillers finally reached the bottom of the ice sheet on January 7 at 3:55 P.M. Pacific time.

«Time and again, the models are conservative, and they're underestimating the magnitude of change,» says Robert DeConto, an ice sheet modeler at the University of Massachusetts Amherst.

Using NASA and European Space Agency satellites, the 2015 study had measured the changing height of the ice sheet and determined that East Antarctica was ballooning upward by roughly 1.59 centimeters a year (at least from 1992 to 2001 and from 2003 to 2008).

The digitized data extend the record of changes at the bottom of the ice sheet, such as the formation of channels as Antarctica's ice flows, by more than two decades.

At present the ice sheet is grounded on underwater islands, which insulate some of the ice from the melting effect of the seawater upon which the rest of the sheet floats.

CReSIS is the Center for Remote Sensing of Ice Sheets, a National Science Foundation science and technology center headquartered at the University of Kansas in Lawrence, Kansas.

Today, as warming waters caused by climate change flow underneath the floating ice shelves in Pine Island Bay, the Antarctic Ice Sheet is once again at risk of losing mass from rapidly retreating glacieice shelves in Pine Island Bay, the Antarctic Ice Sheet is once again at risk of losing mass from rapidly retreating glacieIce Sheet is once again at risk of losing mass from rapidly retreating glaciers.

A chunk of ice the size of downtown Manhattan fell off the Jakobshavn Glacier in Greenland on August 16, the fastest moving ice sheet in the world at present.

«This new, huge data volume records how the ice sheet evolved and how it's flowing today,» said Joe MacGregor, the study's lead author, a glaciologist at The University of Texas at Austin Institute for Geophysics (UTIG), a unit of the Jackson School of Geosciences.

«It is a very good paper which provides valuable new insights about the physical processes controlling the change in reflectivity of the Greenland ice sheet and specifically its darkening over time,» said Eric Rignot, a senior research scientist at NASA's Jet Propulsion Laboratory who studies ice sheets but was not involved with the new study.

«Very old ice probably exists in small isolated patches at the base of the ice sheet that have not yet been identified, but in many places it has probably melted and flowed out into the ocean.»

Thousands of marks on the Antarctic seafloor, caused by icebergs which broke free from glaciers more than ten thousand years ago, show how part of the Antarctic Ice Sheet retreated rapidly at the end of the last ice age as it balanced precariously on sloping ground and became unstabIce Sheet retreated rapidly at the end of the last ice age as it balanced precariously on sloping ground and became unstabice age as it balanced precariously on sloping ground and became unstable.

Capt. Roald Amundsen, the discoverer of the Northwest Passage, left Norway in June, 1910, in the «Fram,» seemingly with the intention of sailing around Cape Horn, however, he sailed to the westward across the South Pacific, and made a landing at whale Bay on the ice sheet covering Ross Sea.

«We should be worried about the Greenland Ice Sheet,» says Joerg Schaefer, a geochemist from Columbia University's Lamont - Doherty Earth Observatory in Palisades, New York, and lead author of the findings, presented yesterday at the American Geophysical Union's annual meeting here.