Sentences with phrase «grounding line retreat»

In addition to Rignot, the authors of the paper in Geophysical Research Letters, «Widespread, Rapid Grounding Line Retreat of Pine Island, Thwaites, Smith and Kohler Glaciers, West Antarctica From 1992 to 2011,» include Jeremie Mouginot, Mathieu Morlighem, Helene Seroussi and Bernd Scheuchl.

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

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.

Related Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica, from...

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.

The studies, entitled Rapid Submarine Ice Melting in the Grounding Zones of Ice Shelves in West Antarctica and Grounding Line Retreat of Pope, Smith and Kohler Glaciers took a comprehensive look at both surface and underside melt of three major west Antarctic glaciers near the Thwaites and Pine Island Glacier systems.

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.

Grounding line retreat.

Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica, from 1992 to 2011

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

This makes it tough to slow grounding line retreat once it begins in a deepening basin.

That big hump probably was the terminal moraine of the glacier for substantial periods, and could be a potential end to the tipping point of runaway grounding line retreat.

Without a rise in the bed, glacier thinning and retreat could result in continual grounding line retreat.

Ice shelf removal could result in grounding line retreat.

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].

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

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.

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.»

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

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.

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

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.

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.

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

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.

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

We decided to run our model for the CLIMAP LIM experiment without allowing an ice shelf to form as the grounding line retreated and enlarged Pine Island Bay.

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

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.

Both saw the center of their grounding lines retreat dramatically.

From 1992 to 2011, Pine Island's grounding line retreated by 19 miles (31 kilometers) while the center of the Thwaites grounding line retreated by nearly 9 miles (14 kilometers).

Not exact matches

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 height of these cliffs made them unstable, triggering the release of thousands of icebergs into Pine Island Bay, and causing the glacier to retreat rapidly until its grounding line reached a restabilising point in shallower water.

Satellite data also helped them make a detailed map of grounding lines across Antarctica and determine where glaciers were retreating fastest.

They found that, as seas warmed at the end of the last ice age, Pine Island Glacier retreated to a point where its grounding line — the point where it enters the ocean and starts to float — was perched precariously at the end of a slope.

There, 22 percent of the grounding line is retreating faster than the benchmark 80 feet per year.

For now, the findings can't tell scientists exactly how much sea - level rise is corresponding with the observed changes, although a net retreat of the grounding line suggests that there's more reason for worry than not.

But overall, the Antarctic grounding line has experienced a net retreat.

At Pine Island Glacier, for instance — one of West Antarctica's largest glaciers, and previously one of its fastest retreating spots — the research suggests that the grounding line has recently stabilized.

The retreat of the grounding line at these glaciers is more than five times that rate.

Although retreat of the Thwaites Glacier grounding line in West Antarctica has sped up, at the neighbouring Pine Island Glacier — until recently one of the fastest retreating on the continent — it has halted.

If they begin to melt, however — particularly as they're exposed to warmer ocean water — the shelves become thinner and the grounding line begins to retreat backward, causing the glacier to become less stable and making the ice shelf more likely to break.

Smith's retreat might slow down now that its grounding line has reached bedrock that rises farther inland of the 2014 grounding line.

UCI and NASA researchers found that the Smith Glacier's grounding line had retreated 1.24 miles (2 kilometers) per year since 1996.

Episodic retreat is recorded by mega-scale glacial lineations that are overprinted by transverse grounding - zone wedges, each recording a pause in ice stream retreat with a stationary grounding line.

Once the ice shelf retreats to the grounding line, the buoyant force that used to offset glacier flow becomes negligible, and the glacier picks up speed on its way to the sea.

The grounding line then retreats down slope into thicker ice that, in turn, drives further increases in outflow.

The grounding line of the ice stream retreated rapidly following ice - shelf collapse26.

But if sea level rises then the depression will increase and the grounding line will retreat.

It is quite easy to model how the grounding line will retreat.