Sentences with phrase «of ice shelf breakup»

«Even though we don't see immediate evidence of ice shelf breakup on the Ross Ice Shelf, everything we've seen up to this point has occurred faster than we expected.

The full effects of ice shelf breakup on glacier demise will not be known for some time.

Not exact matches

Warm mountain winds are causing extensive winter melting on the surface of the Larsen C ice shelf, which could contribute to its breakup

Scientists still do not know what triggers the breakup of an ice shelf or when future ones will occur, so they struggle to estimate how quickly glaciers will dump their ice into the ocean and therefore how much sea level will rise.

«Within a few months» of a breakup, explains glaciologist Ted Scambos of the National Snow and Ice Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.&raqIce Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.&raqice shelf was intact.»

«There are suggestions in the literature that accelerated breakup of ice shelves will lead to rise of sea level by several meters by the end of the century,» Godin said.

While researchers quickly linked the breakup to lakes of meltwater that had accumulated on the so - called Larsen B ice shelf's upper surface and then wedged apart deep crevasses, they hadn't come up with a convincing explanation for what triggered the collapse.

«My fieldwork with the support of the InBev - Baillet Latour Fellowship will shed light on which processes are responsible for this ice shelf breakup, thereby improving the estimates how, when and where East Antarctica is most vulnerable to global warming.»

Since IPCC (2001) the cryosphere has undergone significant changes, such as the substantial retreat of arctic sea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelves.

An additional new feature is the increasingly visible fast dynamic response of ice shelves, for example, the dramatic breakup of the Larsen B Ice Shelf in 2002, and the acceleration of tributary glaciers and ice streams, with possible consequences for the adjacent part of the ice sheeice shelves, for example, the dramatic breakup of the Larsen B Ice Shelf in 2002, and the acceleration of tributary glaciers and ice streams, with possible consequences for the adjacent part of the ice sheeIce Shelf in 2002, and the acceleration of tributary glaciers and ice streams, with possible consequences for the adjacent part of the ice sheeice streams, with possible consequences for the adjacent part of the ice sheeice sheets.

«My fieldwork with the support of the InBev - Baillet Latour Fellowship will shed light on which processes are responsible for this ice shelf breakup, thereby improving the estimates how, when and where East Antarctica is most vulnerable to global warming» said Lenaerts.

Breakup of the Larsen B Ice Shelf triggered by chain reaction drainage of supraglacial lakes (pages 5872 — 5876) Alison F. Banwell, Douglas R. MacAyeal and Olga V. Sergienko Article first published online: 27 NOV 2013 DOI: 10.1002 / 2013GL057694 Key Points Larsen B Ice Shelf rapidly broke ‐ up by chain ‐ reaction drainage of surface lakes Lake ‐ induced stress set fracture spacing small enough for capsize ‐ driven breakup Lake interaction by flexural stress defines an ice ‐ shelf stability tipping point (http://onlinelibrary.wiley.com/doi/10.1002/2013GL057694/abBreakup of the Larsen B Ice Shelf triggered by chain reaction drainage of supraglacial lakes (pages 5872 — 5876) Alison F. Banwell, Douglas R. MacAyeal and Olga V. Sergienko Article first published online: 27 NOV 2013 DOI: 10.1002 / 2013GL057694 Key Points Larsen B Ice Shelf rapidly broke ‐ up by chain ‐ reaction drainage of surface lakes Lake ‐ induced stress set fracture spacing small enough for capsize ‐ driven breakup Lake interaction by flexural stress defines an ice ‐ shelf stability tipping point (http://onlinelibrary.wiley.com/doi/10.1002/2013GL057694/abstraIce Shelf triggered by chain reaction drainage of supraglacial lakes (pages 5872 — 5876) Alison F. Banwell, Douglas R. MacAyeal and Olga V. Sergienko Article first published online: 27 NOV 2013 DOI: 10.1002 / 2013GL057694 Key Points Larsen B Ice Shelf rapidly broke ‐ up by chain ‐ reaction drainage of surface lakes Lake ‐ induced stress set fracture spacing small enough for capsize ‐ driven breakup Lake interaction by flexural stress defines an ice ‐ shelf stability tipping point (http://onlinelibrary.wiley.com/doi/10.1002/2013GL057694/abstraIce Shelf rapidly broke ‐ up by chain ‐ reaction drainage of surface lakes Lake ‐ induced stress set fracture spacing small enough for capsize ‐ driven breakup Lake interaction by flexural stress defines an ice ‐ shelf stability tipping point (http://onlinelibrary.wiley.com/doi/10.1002/2013GL057694/abbreakup Lake interaction by flexural stress defines an ice ‐ shelf stability tipping point (http://onlinelibrary.wiley.com/doi/10.1002/2013GL057694/abstraice ‐ shelf stability tipping point (http://onlinelibrary.wiley.com/doi/10.1002/2013GL057694/abstract)

Reports of the breakup of Antarctic ice shelves and other signs of actual current warming in polar regions begin to affect public opinion.

The possibility of breakup increases as the ice shelf thins.

Ultimately, there is limited value in debating whether human - driven warming has caused the uncloaking of any particular Arctic island, the retreat of a snowfield atop any single mountain — even one as charismatic as Kilimanjaro — or the breakup of a particular ice shelf in Antarctica, or any other regional anomaly.

When such events do occur (such as flooding in Bangladesh, ice shelf breakups in Antarctica) they occur in remote locations that are far from the concerns of average Americans, and making the link between these events and individual day to day concerns is very difficult to make.

Breakup of an ice shelf (Larsen) leads to a speedup of glacier movement: Rignot et al. (2004), Scambos et al. (2004)(who also note lubrication by percolating water, see following note).

This flow of ice, fed by the continuous formation of new ice on land and culminating in the breakup of the shelves on the outer fringe and the calving of icebergs, is not new.

Small changes in global sea level or a rise in ocean temperatures could cause a breakup of the two buttressing ice shelves.

The breakup of these ice shelves is a concern, because that would essentially remove the stopper and greatly accelerate the rate at which glacier melt finds its way to the ocean.

In this case the thinning and resultant structural weaknesses preconditioned the ice to rapid breakup, which proceeded to lose only the preconditioned portion of the ice shelf.

While the iceberg isn't hugely concerning, it could herald the breakup of the entire Larsen C ice shelf, which could trigger more sea - level rise.

Beyond the present danger, scientists warn that — unless the issue of climate change is addressed — we could see the breakup of larger ice shelves, which could have a destabilizing effect on the entire region and possibly the world.

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.

This is the area of the recent and dramatic Larsen B and Ross ice shelf breakups.

The strong warming of the Antarctic Peninsula has led to the breakup of large ice shelves whose presence tended to impede the oceanward flow of mountain glaciers on the peninsula.

IMO, the strongest argument for sea ice decline over the last decade for being unusual and at least in part attributable to global warming is this (from Polyakov et al.): The severity of present ice loss can be highlighted by the breakup of ice shelves at the northern coast of Ellesmere Island, which have been stable until recently for at least several thousand years based on geological data.