Sentences with phrase «floating sheets of ice»

Today, Antarctica is fringed by floating sheets of ice that grow in winter and shrink in summer.

The Hockey Stick tacked onto a wall, polar bears on a floating sheet of ice.

Not exact matches

Since the ice sheet would have floated away in the event of a global flood, the ice core is strong evidence that there was no global flood any time in the last 110,000 years.

From 500 feet up everything appeared in miniature except the giant ice shelves — seemingly endless expanses of ice, as thick as the length of several football fields, that float in the Southern Ocean, fringing the ice sheets that virtually cover the Antarctic landmass.

The Antarctic ice sheet, the thick layer of ice covering much of the continent, is anchored in place by its floating fringe, shelves of ice that jut out into the surrounding ocean.

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.

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.

Eventually, the floating ice shelf in front of the glaciers «broke up», which caused them to retreat onto land sloping downward from the grounding lines to the interior of the ice sheet.

The Ross Ice Shelf, a thick, floating tongue of solid ice the size of Spain, is the biggest of the many such barriers that ring Antarctica and keep its ice sheets from sliding into the sIce Shelf, a thick, floating tongue of solid ice the size of Spain, is the biggest of the many such barriers that ring Antarctica and keep its ice sheets from sliding into the sice the size of Spain, is the biggest of the many such barriers that ring Antarctica and keep its ice sheets from sliding into the sice sheets from sliding into the sea.

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.

Shelf ice, as found in Antarctica, refers to giant floating ice sheets that can span thousands of square kilometres.

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

Although CryoSat - 2 is designed to measure changes in the ice sheet elevation, these can be translated into horizontal motion at the grounding line using knowledge of the glacier and sea floor geometry and the Archimedes principle of buoyancy — which relates the thickness of floating ice to the height of its surface.

One 2004 NASA - led study found that most of the glaciers they were studying «flow into floating ice shelves over bedrock up to hundreds of meters deeper than previous estimates, providing exit routes for ice from further inland if ice - sheet collapse is under way.»

Massive icebergs calving off of Antarctic ice sheets and floating through the Southern Ocean deposit iron, which fertilizes the seawater and nurtures massive phytoplankton blooms.

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.

The project aims to improve understanding of snow melt on ice shelves, floating extensions of the massive inland ice sheet which stabilize ice loss, and how melt will impact on ice shelf stability and sea level.

The MISI is based on a number of studies that indicated the theoretical existence of the instability... The most fundamental derivation, that is, starting from a first - principle ice equation, states that in one - dimensional ice flow the grounding line between grounded ice sheet and floating ice shelf can not be stable on a landward sloping bed.

Further, melt - water of the floating ice - sheets will reoccupy same volume of the displaced water by floating ice - sheets causing no sea - level rise.

«I confess I do have the nightmare sometimes of one of these huge ice sheets, having gotten floated,...»

Melting of either floating ice or glaciers and ice sheets lowers ocean salinity.»

Most of the grounded West Antarctic ice sheet drains into the floating Ross and Ronne - Filchner ice shelves, but a significant fraction also drains into the much smaller Pine Island Glacier.

On the Antarctic Peninsula and in West Antarctica, warming waters are eroding the floating ice shelves that scientists say have impeded the seaward flow of the huge ice sheets of the interior.

Nick, once parts of the ice sheet are bergs in the ocean, it floats, right!

Numerous processes contribute to this, including the removal of buttressing ice shelves (i.e., ice tongues floating on water but in places anchored on islands or underwater rocks) or the lubrication of the ice sheet base by meltwater trickling down from the surface through cracks.

The West Antarctic Ice Sheet (WAIS) is penned in by mountain ranges and the floating ice of the Ross Ice SheIce Sheet (WAIS) is penned in by mountain ranges and the floating ice of the Ross Ice Sheice of the Ross Ice SheIce Shelf.

Ice shelf - A floating slab of ice of considerable thickness extending from the coast (usually of great horizontal extent with a level or gently sloping surface), often filling embayments in the coastline of the ice sheeIce shelf - A floating slab of ice of considerable thickness extending from the coast (usually of great horizontal extent with a level or gently sloping surface), often filling embayments in the coastline of the ice sheeice of considerable thickness extending from the coast (usually of great horizontal extent with a level or gently sloping surface), often filling embayments in the coastline of the ice sheeice sheets.

Because Antarctica drains more than 80 percent of its ice sheet through floating ice shelves, accelerated glacier flow has the potential to affect ice sheet mass balance dramatically and raise sea level (Pritchard et al. 2012).

Although CryoSat - 2 is designed to measure changes in the ice sheet elevation, these can be translated into horizontal motion at the grounding line using knowledge of the glacier and sea floor geometry and the Archimedes principle of buoyancy — which relates the thickness of floating ice to the height of its surface.

With respect to the West Antarctic, ice has been calving from the peripheries of the West Antarctic ice - sheet and floating towards the tropics to melt for a long time, as a natural process in the sheet's existence.

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.

Massive icebergs calving off of Antarctic ice sheets and floating through the Southern Ocean deposit iron, which fertilizes the seawater and nurtures massive phytoplankton blooms.

Scientists measured how, within hours of the lakes forming, the vast ice sheets rose up, as if floating on water, and slid towards the ocean.

223 My sketch of the extent of grounded northern ice sheets is shown atop a satellite photo at modern sea levels with floating sea ice removed.

These approaches, however, haven't taken into account some physical processes that can quickly increase ice sheet discharge, such as the collapse of terminal ice cliffs and the breakup of floating ice shelves caused by a process known as hydrofracturing.

Furthermore, while the melting of floating sea ice does not directly affect sea level, the extra heat in the region is accelerating the melting of the Greenland ice sheet, a massive body of ice 3 kilometers thick.

Eventually, the leading edge forms a cantilevered ice shelf that floats on the water but remains attached to the anchored part of the ice sheet.

Tide heights near ice shelves can be measured using traditional coastal tide gauges and bottom pressure recorders, while currents can be measured with meters on moorings in the open ocean or deployed through boreholes drilled through ice shelves, which are the floating portions of ice sheets.

The main components of the cryosphere are mountain glaciers and ice caps, floating ice shelves and continental ice sheets, seasonal snow cover on land, frozen ground, sea ice and lake and river ice.

In 1997, the floating tongue of Jakobshavn Glacier, the largest outlet of the Greenland Ice Sheet, began to disintegrate, and simultaneously the dynamic thinning of the glacier began.

The shape of this slope means that when grounding lines start to retreat, ocean water can infiltrate between the ice and the bed and cause the ice sheet to float off its grounding line.

In understanding the behavior of ice sheets, attention is particularly focused on the boundary between the floating ice and grounded ice, which is usually called the grounding line, although in detail it is a zone with interesting but imperfectly understood properties (e.g., Schoof, 2007; Joughin et al., 2012a; Walker et al., 2013); see Figure 2.7.

The Melting Arctic Melting Ice Displaces Walruses In The Russian Arctic Ice Melt Causing Death of Polar Bears And there were the pictures of polar bears stranded on sheets of floating ice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar beaIce Displaces Walruses In The Russian Arctic Ice Melt Causing Death of Polar Bears And there were the pictures of polar bears stranded on sheets of floating ice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar beaIce Melt Causing Death of Polar Bears And there were the pictures of polar bears stranded on sheets of floating ice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar beaice, accounts of their deaths «as a result of Global Warming» and even a documentary about the plight of the polar bears.

The corresponding increased ice sheet mass loss has often followed thinning, reduction or loss of ice shelves or loss of floating glacier tongues.

The study argues that ice sheets in contact with the ocean, including the many West Antarctic glaciers that end in floating ice shelves, «are vulnerable to non-linear disintegration» due to a combination of atmospheric warming and major shifts in ocean circulation that would result from a surge in freshwater flowing into the ocean in the North Atlantic (from Greenland), and Southern Ocean (from Antarctica).

«Significant loss of ice from polar ice sheets» Of course, this does not apply to floating ice (with the exception of small changes due to higher temperature and water expansion that might happen incidentallyof ice from polar ice sheets» Of course, this does not apply to floating ice (with the exception of small changes due to higher temperature and water expansion that might happen incidentallyOf course, this does not apply to floating ice (with the exception of small changes due to higher temperature and water expansion that might happen incidentallyof small changes due to higher temperature and water expansion that might happen incidentally).