Sentences with phrase «about the ice shelf»

But the rift itself — how fast that cut through and what held it up — is teaching us a lot about ice shelves.

People have been a bit jumpy about ice shelves ever since the Larsen Ice Shelf began to break up.

The second goal, however, is to learn more about the ice shelf itself, including its response to long - period ocean waves that lift and drop it.

Scientists have become growingly concerned about ice shelf collapse, and in 2016, they proposed a new rule allowing for special study areas following collapse or massive calving events.

Not exact matches

It forced the ice to retreat but stopped at about 7,500 years ago, when the belt of westerly winds driving the deep water onto the shelf shifted northwards.

In the mid-1980s all our flights were survey flights: we had 12 hours in the air once we left our base in southern Chile, so we had plenty of time to chat with the pilots about making a forced landing on the ice shelves.

And over the past 18 months, two of the peninsula's largest ice shelves, the Larsen B and the Wilkins, have lost nearly 1,100 square miles of their total area, a sheet of ice about the size of Rhode IslandCK.

Ice - shelf retreat on the Antarctic Peninsula, has been observed throughout the satellite era — about 50 years.

An iceberg about the size of the state of Delaware split off from Antarctica's Larsen C ice shelf sometime between July 10 and July 12.

When the researchers took density of snow into account, they found that ice shelves lost about five times more ice by submarine melting than they gained from new surface snowpack.

Next up, south of Larsen B and Scar Inlet, is the Larsen C ice shelf, which covers 49,000 square kilometers — twice as large as the state of Maryland, or about 820 Manhattans.

The last time a large iceberg calved from Antarctica was in 2002, when a chunk about half the size of the Larsen C iceberg calved from a different ice shelf on the Antarctic Peninsula, Larsen B (SN: 3/30/02, p. 197).

We can expect to learn a lot about how ice shelves break up and how the loss of a section of an ice shelf affects the flow of the remaining parts.»

From 1994 to 2003, the overall loss of ice shelf volume across the continent was negligible: about 25 cubic kilometers per year (plus or minus 64).

Larsen C, covering about 55,000 square kilometers, is the largest ice shelf along the Antarctic Peninsula.

The ice under the front of the shelf is melting at a rate of about 3.3 feet (1 meter) per year, so the creatures must be burrowing to stay inside the ice, Rack said.

About 19 months after the wind churned the ocean, cycling warm deep waters upward and sending the cold surface waters down, the Totten ice shelf was noticeably thinner and had sped up.

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.

«Basically we know very little to nothing about what lives underneath them, and the only places we have a glimpse of this is at a couple of the smaller ice shelves that have collapsed,» Griffiths told OurAmazingPlanet.

There are many ice shelves but the biggest (about the size of France) is the Ross Ice Shelf, tucked into a deep embayment in West Antarctiice shelves but the biggest (about the size of France) is the Ross Ice Shelf, tucked into a deep embayment in West AntarctiIce Shelf, tucked into a deep embayment in West Antarctica.

«If the structure is indeed the result of the 2004 impact, we would expect it to have undergone about 10 years of alteration by processes such as snow accumulation, erosion by the wind, and deformation by the flow of the ice shelf itself.»

The planet as a whole has warmed about 1.3 °F since 1900, but on the peninsula, it has shot up by a whopping 5 °F in just 50 years, forcing massive ice shelves to disintegrate and sea ice along with penguin population size to diminish.

Overall, ice shelves in the Amundsen sea sector lost about five times as much mass as they gained during the event.

The new iceberg will remove about 10 percent of the ice shelf's area.

The findings, published Monday in Nature Geoscience, reveal that the 1997 - 98 El Niño led to a substantial loss of mass from the bottom of the ice shelves in West Antarctica's Amundsen sea sector, even as the shelves appeared to grow about ten inches taller from additional snowfall.

During glaciation, water was taken from the oceans to form the ice at high latitudes, thus global sea level drops by about 120 meters, exposing the continental shelves and forming land - bridges between land - masses for animals to migrate.

The planet as a whole has heated up by about 1.3 °F since 1900, but on the peninsula, it has shot up by a whopping 5 ° in just 50 years, forcing massive ice shelves to disintegrate and penguin colonies to collapse.

The rates of rapid rise Jim Hansen talks about occurred when large ice sheets covered Canada and the Antarctic ice sheet extended to the edge of the continental shelf.

In general, the concern in Pine Island Bay has been about ice loss from the base of the ice shelves, due to warm ocean water.

It's revealed a great deal about the age of the ice shelves in the Antarctic.

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.

By the way - readers may be interested in the following link about a large ice shelf that has broken free in the Arctic - another key event in 2006?

We just read about this with respect to the loss of ice shelves in Antarctica.

As the Greenland ice melts, the reduction of overburden will allow the bedrock to rise in compensation, along with the surrounding mountains, and further out the continental shelf will sink, if my memories of being taught about isostasy are correct!

So, I was curious about your recent paper and whether there was any discussion of changes in the THC poleward of the GIS shelf vs the data from the RAPID program line located at 26.5 N. With the decline in minimum extent and volume of sea - ice, one might expect to see more THC sinking into the Arctic Ocean, with consequences for both climate and weather.

Mercer (1968, 1978) proposed that atmospheric warming could cause the ice shelves of western Antarctica to disintegrate and that as a consequence the entire West Antarctic Ice Sheet (10 % of the antarctic ice volume) would lose its land connection and come afloat, causing a sea level rise of about five metrice shelves of western Antarctica to disintegrate and that as a consequence the entire West Antarctic Ice Sheet (10 % of the antarctic ice volume) would lose its land connection and come afloat, causing a sea level rise of about five metrIce Sheet (10 % of the antarctic ice volume) would lose its land connection and come afloat, causing a sea level rise of about five metrice volume) would lose its land connection and come afloat, causing a sea level rise of about five metres.

Sediment cores the team collected by drilling in front of the current Cosgrove Ice Shelf indicate that relatively warm ocean waters dissolved the vast ice shelf and even some of the glacier behind it about 2000 years ago, they recently reportIce Shelf indicate that relatively warm ocean waters dissolved the vast ice shelf and even some of the glacier behind it about 2000 years ago, they recently reportice shelf and even some of the glacier behind it about 2000 years ago, they recently reported.

By about 2070, these warm waters will have drained the cavity beneath the ice shelf, and will reach the line between floating sea ice and grounded ice sitting on the seabed within 14 more years.

«We find that the access of warm water to the glaciers and ice shelves in this region are almost controlled by a depth of about 700 meters [2,300 feet], which is just right above some of the warmest waters in the region,» said Eric Rignot, a professor of Earth system science at UCI and co-author of the new study.

Researchers at CIRES» National Snow and Ice Data Center [About NSIDC] investigate the dynamics of Antarctic ice shelves, new techniques for the remote sensing of snow and freeze / thaw cycle of soils, the role of snow in hydrologic modeling, linkages between changes in sea ice extent and weather patterns, large - scale shifts in polar climate, river and lake ice, and the distribution and characteristics of seasonally and permanently frozen grouIce Data Center [About NSIDC] investigate the dynamics of Antarctic ice shelves, new techniques for the remote sensing of snow and freeze / thaw cycle of soils, the role of snow in hydrologic modeling, linkages between changes in sea ice extent and weather patterns, large - scale shifts in polar climate, river and lake ice, and the distribution and characteristics of seasonally and permanently frozen grouice shelves, new techniques for the remote sensing of snow and freeze / thaw cycle of soils, the role of snow in hydrologic modeling, linkages between changes in sea ice extent and weather patterns, large - scale shifts in polar climate, river and lake ice, and the distribution and characteristics of seasonally and permanently frozen grouice extent and weather patterns, large - scale shifts in polar climate, river and lake ice, and the distribution and characteristics of seasonally and permanently frozen grouice, and the distribution and characteristics of seasonally and permanently frozen ground.

A team of international scientists is due to set off for the world's biggest iceberg, fighting huge waves and the encroaching Antarctic winter, in a mission aiming to answer fundamental questions about the impact of climate change in the polar regions.The scientists, led by the British Antarctic Survey (BAS), are trying to reach a newly revealed ecosystem that had been hidden for 120,000 years below the Larsen C ice shelf on the Antarctic peninsula.In July last year, part of the Larsen C ice shelf calved away, forming a huge iceberg - A68 - which is four times bigger than London, and revealing life beneath for the first time.

The trillion - ton iceberg which makes up about 12 percent of Larsen C ice shelf finally broke off sometime between July 10 and 12, changing the Antarctic landscape for good.

Like the rates of ice shelf melt right now, these figures are relatively modest, but they are a reminder of how much climate scientists still have to learn about the complex physics of ice, climate and atmospheric circulation.

«Our models show that similar levels of melt may occur across coastal Antarctica near the end of the century, raising concerns about future ice shelf stability.»

The George VI Ice Shelf collapsed about 9000 years ago but reformed 7000 years ago and that shelf still persists today.

But deep water production by convection may be less, depending on how much NADW is Arctic in origin and how much is simply recirculated Antarctic bottom water (extremely dense water, formed as brine under the sea ice around polynas offshore of Antarctica and sliding down the continental shelf into the depths without much mixing, creates a giant pool of dense water extending all the way up the bottom of the Atlantic to about 60 ° N).

Yet, since on rare occasion they have not seen it because it is so obvious it is worth asking about and one might even learn something Worse, in Eli's case, this is something that finally percolated through because of nonsense that Andrew Montford at Bishop Hill wrote trying to handwave the weird ice coverage this winter up north (yes, Eli knows everybunny and his brother in law is racing south to watch the Antarctic ice shelves collapse, but this is Rabett Run, Eli and Brian follow their own pipers).

Jonathan Kingslake, an assistant professor at Columbia University's Lamont - Doherty Earth Observatory, also raised concerns about the stability of the ice shelf and other Antarctic ice shelves amid changes underway in the region.

And about rapid, «faster - than - expected» melting of ice shelves in West Antarctica.

• Rising sea level will inundate shorelines (Al Gore)-- unless the Antarctic ice shelf decides to fall into the Ocean all at once, it will take about 300,000 years for this to occur at present melt rates and we'll be in an ice age before it happens.