Sentences with phrase «mile sheet of ice»

At 104 square miles, Glacier Grey forms less than three percent of the 4,773 - square - mile sheet of ice stretching across southern Chile and Argentina.

Not exact matches

A glacier is made up of thousands of tons of ice which is layered in sheets and covers miles and miles.

Now the team is packing up their tools and mobile labs so that they can be shipped out to the ice sheet for the real deal: Boring through a half - mile of ice covering Lake Whillans.

While the exact sources of black carbon are often difficult to pinpoint in remote areas, the researchers used molecular analysis of the black carbon along with analysis of wind patterns to show that Greenland's ice sheet had recently seen clear effects of wildfires burning thousands of miles away in the Canadian Arctic.

Dan Sampson from the University of California in Santa Cruz jumps to test seismic sensors that are buried in the West Antarctic Ice Sheet, nearly 650 miles and a world away from the Dry Valleys.

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.

And over the past 18 months, two of the peninsula's largest ice shelves, the Larsen B and the Wilkins, have lost nearly 1,100 square miles of their total area, a sheet of ice about the size of Rhode IslandCK.

the south - bound expedition had cleared that vast plain of floating ice which flows down from the great mountains of the interior and covers the southern part of Ross Sea throughout an area above 20,000 square miles with an ice sheet approximately 800 feet in thickness, and had begun to climb the heights which form the mountainous embayment at the head of Ross Sea.

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 sheet.

Buried under a sheet of ice 2.5 miles thick, Lake Vostok is the world's seventh - largest freshwater lake and the largest of more than 300 lakes trapped beneath the Antarctic ice sheet.

In parts, it's nearly three miles thick, and, with the nearby West Antarctic Ice Sheet, it blankets an expanse roughly the size of the United States and Mexico combined.

A 15 - meter pan-sharpened Landsat 8 image of the Mount Takahe volcano rising more than 2,000 meters (1.2 miles) above the surrounding West Antarctic ice sheet in Marie Byrd Land, West Antarctica.

One such ice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciIce Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical species.

With a volume of more than 700,000 cubic miles and an average thickness of 4,000 feet, the West Antarctic Ice Sheet (WAIS) holds enough water to raise sea levels by 15 to 20 feet — and it is already sweating off 130 billion tons of ice per yeIce Sheet (WAIS) holds enough water to raise sea levels by 15 to 20 feet — and it is already sweating off 130 billion tons of ice per yeice per year.

In the mid-1990s, a lake containing 1,300 cubic miles of water (as much as Lake Michigan) was detected 12,000 feet below the surface of the ice in East Antarctica, beneath where the Russians had spent years drilling into the ice sheet to study its history.

Hawkings and his collaborators spent three months in 2012 and 2013 gathering water samples and measuring the flow of water from the 600 - square - kilometer (230 - square - mile) Leverett Glacier and the smaller, 36 - square - kilometer (14 - square - mile) Kiattuut Sermiat Glacier in Greenland as part of a Natural Environment Research Council - funded project to understand how much phosphorus, in various forms, was escaping from the ice sheet over time and draining into the sea.

Surprise find The team's actual mission was to survey ocean currents near the Ross Ice Shelf, a slab of ice extending more than 600 miles (970 kilometers) northward from the grounding zone of the West Antarctic Ice Sheet into the Ross Sea, to model the behavior of a drill string, a length of pipe extending to the seafloor which delivers drilling fluids and retrieves sediment samplIce Shelf, a slab of ice extending more than 600 miles (970 kilometers) northward from the grounding zone of the West Antarctic Ice Sheet into the Ross Sea, to model the behavior of a drill string, a length of pipe extending to the seafloor which delivers drilling fluids and retrieves sediment samplice extending more than 600 miles (970 kilometers) northward from the grounding zone of the West Antarctic Ice Sheet into the Ross Sea, to model the behavior of a drill string, a length of pipe extending to the seafloor which delivers drilling fluids and retrieves sediment samplIce Sheet into the Ross Sea, to model the behavior of a drill string, a length of pipe extending to the seafloor which delivers drilling fluids and retrieves sediment samples.

In Iceland, the Grimsvotn volcano, buried miles beneath the ice sheet, melts the ice cap above it in the same way that the rising plumes might melt Europa's shell, causing the surface of the Icelandic ice sheet to cave in.

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.

The northern lights shimmer above Summit Station, which lies near the top of the Greenland Ice Sheet, 250 miles from its nearest neighbor.

Increased ice flow in this region is particularly troubling, Khan said, because the northeast ice stream stretches more than 600 kilometers (about 373 miles) into the center of the ice sheet, where it connects with the heart of Greenland's ice reservoir.

In the middle of the East Antarctic Ice Sheet, the team was traveling across ice 2 miles (3 km) thick, when something strange started to happen, according to Robin Bell, a geophysicist and professor at Columbia University's Lamont - Doherty Earth ObservatoIce Sheet, the team was traveling across ice 2 miles (3 km) thick, when something strange started to happen, according to Robin Bell, a geophysicist and professor at Columbia University's Lamont - Doherty Earth Observatoice 2 miles (3 km) thick, when something strange started to happen, according to Robin Bell, a geophysicist and professor at Columbia University's Lamont - Doherty Earth Observatory.

In the lab, ancient bacteria from ice samples 420,000 years old, retrieved from more than 2 miles (3 km) inside the ice sheet, have quickly shown signs of life.

If one could go back to the site of Chicago, Illinois, 18,000 years ago, you would be standing on an ice sheet over two miles thick, and you would be in a climate just like the Arctic is today.

Also mentioned in the NASA release is the work of Kaitlin Keegan, a doctoral student at Dartmouth College whose focus is «firn,» the newly deposited layers of snow cloaking the two - mile - thick ice sheet that will, over time, become the next dense layers in the great frozen mass.

By coincidence, Behar's death came just three days before publication of the latest study on which he is a co-author — a detailed analysis of the melt - water rivers and moulin drains across a 2,000 - square - mile portion of the vast Greenland ice sheet.

The earth has had significant Global Warming for some 20,000 years now... The only real argument is to the degree that mans activity has augmented that... We just came out of one - point - five - million years of continuous glaciation with sheets of two mile thick ice down past the 44th parallel... I will cheerfully deal with warming issues over that, any day...

Greenland is twice the size of Texas with an ice sheet more than a mile thick that at current rates will take more than 10,000 years to melt.

Repeated Pleistocene Epoch ice ages covered much of North America, Europe and Asia under mile - thick ice sheets that denuded continents, stunted plant growth, and dropped ocean levels 400 feet for thousands of years.

The Antarctic Ice Sheet extends almost 14 million square kilometers (5.4 million square miles), roughly the area of the contiguous United States and Mexico combined.

A study last year showed that between April 2002 and February 2009 the Greenland ice sheet lost 385 cubic miles of ice, adding approximately 0.5 millimeters of sea - level rise every year.

Over thousands of years, the layers of snow build up, forming a flowing sheet of ice thousands of feet thick and tens to thousands of miles across.

An ice sheet is a mass of glacial land ice extending more than 50,000 square kilometers (20,000 square miles).

The Antarctic Ice Sheet contains 30 million cubic kilometers (7.2 million cubic miles) of iIce Sheet contains 30 million cubic kilometers (7.2 million cubic miles) of iceice.

But if the great ice sheet that covered most of North America to a depth of two miles had not melted owing to naturally - occurring global warming 10,000 years ago, where would the United States be today?

The researchers arranged for their equipment — cumulatively weighing about 300,000 pounds — to travel within 12 shipping containers across 800 miles of ice sheet to reach the subglacial Lake Whillans in southwest Antarctica.

Ninety percent of the world's ice lies either on the continent, in ice sheets that are on average 1.3 miles thick, or in sheets that have flowed offshore to form floating platforms of ice along the coast, hundreds to thousands of feet thick.

Their idea, simply put, is to pump excess seawater more than two miles into the air to the top of the Antarctic ice sheet, where it would freeze and stay put — for a very long time, although not forever.

However, the last time the earth's average temperature was 5k lower than to - day mile - high ice sheets covered much of northern Europe and America.

The miles - thick ice - sheets of Antarctica continue to surprise scientists, as they attempt to prise out the secrets from deep within the southern hemisphere's giant ice locker.

The last time the earth averaged a few degrees colder, most of North America was covered in a mile thick sheet of ice.

The team used changes in dust levels and stable water isotopes in the annual ice layers of the two - mile - long Greenland ice core, which was hauled from the massive ice sheet between 1998 to 2004, to chart past temperature and precipitation swings.

In 2005 the Greenland ice sheet lost around 53 cubic miles (220 cubic kilometers) of mass — more than two times the amount it lost in 1996 (22 cubic miles, or 90 cubic kilometers).5 The melt area set a new record in 2007: it was about 60 percent larger than the previous record in 1998, and extended farther inland.7, 8 By 2007 the melt season at elevations above 6,500 feet (2,000 meters) was a month longer than the average from 1988 to 2006.9

10,500 years ago, Vancouver, BC was covered by a sheet of ice 1 mile thick and the sea level was -100 meters compared to today.

The Greenland Ice Sheet has an area of 2.17 million square kilometers (1.28 million square miles) and spans 18o degrees of latitude from north to south.

The Antarctic ice sheet, which is 1.5 miles thick in some places, contains over 90 percent of the world's fresh water.

This fossilized coral reef was alive about 20,000 years ago, during the height of the last glacial period, a time when Earth was around 9 degrees Fahrenheit (5 degrees Celsius) cooler than it is now, and the city of Chicago was buried beneath an ice sheet almost 2 miles (3 kilometers) thick.

The coldest temperature on Earth was recorded in Antarctica in 1983, when the outside air hit minus 129 degrees Fahrenheit (minus 89 degrees Celsius) at Vostok Research Station, which sits at the center of the East Antarctic Ice Sheet, about 800 miles (1,300 km) from the Geographic South Pole.

«The Laurentide Ice Sheet was a massive sheet of ice that covered hundreds of thousands of square miles, including most of Canada and a large portion of the northern United States, multiple times during Quaternary glacial epocIce Sheet was a massive sheet of ice that covered hundreds of thousands of square miles, including most of Canada and a large portion of the northern United States, multiple times during Quaternary glacial epSheet was a massive sheet of ice that covered hundreds of thousands of square miles, including most of Canada and a large portion of the northern United States, multiple times during Quaternary glacial epsheet of ice that covered hundreds of thousands of square miles, including most of Canada and a large portion of the northern United States, multiple times during Quaternary glacial epocice that covered hundreds of thousands of square miles, including most of Canada and a large portion of the northern United States, multiple times during Quaternary glacial epochs.

They determined, however, that this volume had now increased by a further 3 cubic miles each year, prompted by an acceleration in the rate at which the ice caps and glaciers are melting.Unlike what many other scientists have said — including, most prominently, NASA's James Hansen (who believes that a rise in 17 inches by 2100 will be mainly precipitated by the melting of ice sheets)-- the authors of this study believe that the loss of ice from glaciers and ice caps will account for the majority of the expected rise in sea levels.