Sentences with phrase «ice shelves do»

Ice shelves do not raise sea level when they melt, but do seem to accelerate the flow of land - bound ice into the sea — one of the «unknowns» of global warming.

As opposed to a glaciers or ice sheets, which are found on land, floating ice shelves don't raise global sea levels appreciably when they break off into the ocean and melt.

I know that meltwater from glaciers and ice caps on land contribute to SLR, whereas melting sea ice and floating ice shelves do not.

Melting of the ice shelves doesn't directly affect sea level rise, because they're already floating.

Melting of ice shelves does not directly contribute to sea - level rise, but instead they hold back water frozen in the larger ice sheet that will cause sea levels to rise.

The melting of floating ice shelves does not contribute to sea level rise because once they are in the water, the ice shelves have already contributed to sea level rise.

The loss of floating ice shelves doesn't raise sea level directly.

The melting of floating ice shelves does not contribute to sea level rise because once they are in the water, the ice shelves have already contributed to sea level rise.

Not exact matches

Although MIDAS is studying climate change's effect on Antartica, they said they weren't sure whether or not global warming was actually the culprit in this particular calving (although they said it does leave the ice shelf in a «vulnerable position.»)

I love that because it gives them just a little extra shelf life and when I make the smoothie, I don't need to add any ice.

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.

Those 2007 IPCC estimates of 18 to 59 centimeters of sea - level rise by 2100 do not account for any of these ice shelf effects.

«We don't currently know what changed in 2014 that allowed this rift to push through the suture zone and propagate into the main body of the ice shelf,» said Dan McGrath, a glaciologist at Colorado State University who has been studying the Larsen C ice shelf since 2008.

«These assessments of ice shelves need to be done regularly» to build up a time series of data — and ultimately to be able to separate a trend signal from the noise.

Some large chunks of ice have broken off Antarctica's ice shelves in recent years, although most researchers don't foresee runaway melting there.

What's more, so did two smaller ice shelves elsewhere on the peninsula.

Work done in the southern hemisphere's summer, December through January 2012 - 13, included drilling holes in the ice to place a variety of instruments and using radar to map the underside of the ice shelf and the bottom of the ocean.

Even Spitsbergen was warmer than the east coast of Novaya Zemlya — the Gulf Stream does not extend that far — and in Barents» time the prevailing wind, then northeasterly, came straight off the Arctic ice shelf.

The ice shelf floats within a pool of its own cold meltwater that sits atop a deeper, saltier and warmer layer; the two layers generally don't mix, like oil and water.

«Anything we can do to quantify what is going on with these large ice shelves is of huge importance.

Prior to this work, geologists did not know exactly when the Ross ice shelf began to advance.

Ice shelves are already floating in the water, so they don't contribute to sea - level rise in any meaningful way.

Ice shelves (the floating front edges of glaciers that extend tens to hundreds of miles offshore) melt more because of contact with ocean water below them than they do because of sunlight.

Over the next 14,000 years, the ice shelf advanced and did not begin retreating again until about 13,000 years before the present, when the last ice age ended.

This is an apparently widespread phenomenon that does not require climate warming sufficient to initiate ice - shelf surface melt.

Although the robot didn't offer a glimpse of anything living there — it's not equipped with cameras or a sampling arm — it did provide invaluable data for scientists studying the swift - moving Pine Island Glacier ice shelf, which might be thought of as ground zero for the biggest Antarctic mystery of all, in the minds of many scientists: What is happening to the ice?

So disappearing sea ice in the Arctic, or collapsing ice shelves in the Antarctic, do not directly add to sea level rise.

For example, some exciting work being done by David Pollard and Rob DeConto suggests that processes such as ice - cliff collapse and ice - shelf hydrofracturing may play important roles in future ice sheet behavior that have not been well incorporated into most ice sheet models.

Because the ice shelf is floating in the ocean, its melting does not immediately contribute to sea level rise.

The ice shelf is in the midst of a natural process of calving a large iceberg, which it hasn't done since 2001.

However, meltwater ponding alone does not explain rapid ice - shelf fragmentation.

This could be do to changes in ocean circulation, and warming waters reaching the grounding lines for ice shelves in Arctic and Antarctica, leading to non-linear increase in melting and sea level rise, impossible to avoid on our current path.

The Larson C ice shelf in Antarctica is creeping closer to breaking off, and when it does, it's set to form one of the biggest icebergs on record.

When Vaughn says that the West Antarctic glaciers are in retreat, does he mean that the fronting ice shelves are in retreat?

Regarding the ice shelf my point had nothing to do with its present condition, but with the implication that this was an unprecedented event.

Does the speed of the forcing make up for the fact the ice sheet was sitting on the continental shelf?

(Surely the presence or absence of glacial ice doesn't greatly affect the «piling up» of sea ice against the shore — or terminal ice shelf — by persistent wind and current out of the North?)

No longer do we need to rely on guesswork and computer modeling, because satellite images reveal a dramatic disappearance of glaciers, Antarctic ice shelves and polar ice sheets.

«Dermot Antoniadesa said: «At this point, it doesn't appear that the shelf ice around Ellesmere Island is any smaller now than it was during the previous period of warming, but because it's still shrinking, it's possible it could become, an «unprecedented» event.

«Only five large ice shelves remain in Arctic Canada, covering less than a tenth of the area than they did a century ago.»

Ian Joughin made some statements recently [context] that I thought were pretty solid about it being a few centuries before this kind of very rapid sea level rise can take place and that makes sense to me because there are some very important things that you have to do in order to turn on the rapid response of the Antarctic ice sheet — you have to get rid of a couple of big ice shelves for starters.

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.

How does the heat from erupting volcanoes under the West Antarctic Peninsula's ice sheets and surrounding waters affect ice - shelf formation and break - up?

In contrast, Flask and Leppard glaciers, further south, did not accelerate as they are still buttressed by an ice shelf.

# 146: my understanding is that ice shelf breakup does contribute to eustatic sea - level rise, as you say, but only a little, and less so for larger ice shelves (the anchoring is more distant).

When ice shelves already largely in the water break off from the continental ice mass, this does not have much direct effect on sea level per se.

Do note that ice shelves and sea ice are not the same thing.

They don't take into account the possibility that pulses of warm sea - water may become more frequent in triggering ice - shelf collapses - or that glaciers may speed up along their base due to penetrating melt - waters.

I do not believe that the temperature change for the ice shelves has resulted in this.

Work done in the southern hemisphere's summer, December through January 2012 - 13, included drilling holes in the ice to place a variety of instruments and using radar to map the underside of the ice shelf and the bottom of the ocean.