Sentences with phrase «line retreat»

On the other hand, the point at which the grounding line retreats from its current high ground is a clearly - defined physical location — hence another tipping point.

Ice shelf removal could result in grounding line retreat.

«I think it might actually be worth building a continuous platform for monitoring grounding line retreat rates based on our approach,» Konrad said.

As warm ocean water erodes the bottom of the ice shelf, the grounding line retreats inland.

This feedback could potentially result in the rapid loss of parts of the ice sheet, as grounding lines retreat along troughs and basins that deepen towards the ice sheet's interior.

Similarly if PIG grounding line retreats into the deeper basin, it is hard to imagine a stable position during a resultant calving retreat, in that deep basin stretch.

When the grounding line retreats from its current position on a ridge into the valley, the rim of the ice facing the ocean becomes higher than before.

In the somewhat good news department, the new study shows that Pine Island Glacier, the fastest - shrinking glacier on the planet, has actually seen its grounding line retreat slow down markedly compared to measurements taken from 1992 - 2011.

Around the Antarctic Peninsula, a number of ice shelves have recently dramatically collapsed [2 - 4], resulting in glacier acceleration, thinning and grounding line retreat [5 - 7].

Warm waters have been eating away at ice from below in this region, and once grounding lines retreat far enough inland, entire glaciers can become unstable and collapse.

For several of the key ice sheets the elevation is below sea level for considerable distances, so grounding line retreat dynamics have different forcings, such as mid-level «warm» water penetration.

First, as glaciers melt sea level rises and grounding lines retreat speeding the remaining glaciers» advance into the sea.

Terran: You are correct a reduction in driving stress would occur, if the grounding line retreats off of the current higher terrain.

In our simulations, the Wilkes grounding line retreats significantly under fossil fuel carbon emissions of 1000 GtC or more.

During the cold Little Ice Age tree lines retreated.

For example, a study at Scripps Institute of Oceanography showed that just the retreat of sea ice alone is equivalent to adding a quarter to the amount of anthropogenic CO2 release into the atmosphere and including the snow line retreat, it adds one - half.

This means the grounding line retreats underneath inland ice that is increasingly thicker, leading to an increase in the volume of ice that flows past the grounding line.

Both saw the center of their grounding lines retreat dramatically.

Most of the WAIS is grounded below sea level and has the potential to collapse if grounding - line retreat triggers a strong positive feedback whereby ocean water undercuts the ice sheet and triggers further separation from the bedrock (35 ⇓ — 37).

«Widespread, Rapid Grounding Line Retreat of Pine Island, Thwaites, Smith and Kohler Glaciers, West Antarctica from 1992 to 2011.»

«I think it might actually be worth building a continuous platform for monitoring grounding line retreat rates based on our approach,» Konrad said.

Parizek, B.R., R.B. Alley, and C.L. Hulbe, 2003: Subglacial thermal balance permits ongoing grounding - line retreat along the Siple Coast of West Antarctica.

Since the trough is impeding the outward flow of the glacier, doesn't this suggest that if the grounding line retreats into the trough, the glacier mass will no longer be impeded, and the driving stress which would previously build up would now be able to move the ice forward, and so tend to offset the retreat of the grounding line?

When the grounding line retreats from its current position on a ridge into the valley, the rim of the ice facing the ocean becomes higher than before.

Ocean heat eats away at the ice, the grounding line retreats inland and ice shelves lose mass.

Rignot, E., J. Mouginot, M. Morlighem, H. Seroussi, and B. Scheuchl (2014), Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica, from 1992 to 2011, Geophys.

Melting would make the grounding line retreat — this is where the ice on the continent meets the sea and starts to float.

But scientists increasingly attribute much of the observed grounding line retreat — particularly in West Antarctica — to the influence of warmer ocean water seeping beneath the ice shelves and lapping against the bases of glaciers, melting the ice from the bottom up.

The team, led by Dr Hannes Konrad from the University of Leeds, found that grounding line retreat has been extreme at eight of the ice sheet's 65 biggest glaciers.

This is called grounding line retreat.

Ice - stream behaviour and grounding line retreat is therefore unique to every ice stream.

Thwaites, meanwhile, also continues to rank among of the fastest - shrinking glaciers, and has seen its grounding line retreat rate increase slightly compared to the earlier period, which Konrad said «should emphasize once more that this glacier is under threat.»

For instance, if a particular sector has been shown to potentially experience ocean warming in the future — one of the main triggers to grounding line retreat — we would assign a relatively high probability; while a sector already experiencing grounding line retreat would have a very high probability.

If the grounding line retreat is irreversible, how did the grounding line advance as far as it did in the first place?

The rapid shrinkage of glaciers around the Antarctic Peninsula, coupled with the potential for ice - shelf collapse and grounding line retreat, raises concerns for the future of the West Antarctic Ice Sheet, and this is an area of urgent current research [3].

As a result, when the grounding line retreats and sinks, it allows warm water to flow into the cavity.

The sampling and geostatistical analysis were produced by A.J.P., and the theoretical conditions of grounding - line retreat were developed by R.A.H., C.R. and G.D.

But scientists increasingly attribute much of the observed grounding line retreat — particularly in West Antarctica — to the influence of warmer ocean water seeping beneath the ice shelves and lapping against the bases of glaciers, melting the ice from the bottom up.

But if the grounding line retreats, sending inland ice further afloat, the shelf may begin a runaway collapse.