Sentences with phrase «glacier ice taken»

After a glaciologist from Alaska believed she heard trapped air bubbles escaping the ice, she teamed with other scientists from Texas to eavesdrop on bits of melting glacier ice taken from Gulkana Glacier in Alaska.

Not exact matches

«Also, since this «tipping point» was reached in the late»90s before warming really took off, it indicates that these peripheral glaciers are very sensitive and, potentially, ephemeral relative to the timescales of response of the ice sheet,» he added.

For glaciers that extend from low to high elevation, measurements taken at the low end — the glacier's «snout» — may not tell scientists much about how the same ice sheet is behaving higher up the mountain.

In comparison, it took the Jakobshavn Isbræ ice stream — a southwest Greenland region with a fast - moving glacier that has been a focal point of scientific examination of ice sheet melt — 150 years to retreat 35 kilometers, said Khan.

A longstanding hypothesis claimed that the first migration took place 12,600 years ago through an ice - free corridor between retreating North American glaciers, via the ice - age Bering Land Bridge between Siberia and Alaska.

On July 17, more than 70 million tons of ice broke off from the Aru glacier in the mountains of western Tibet and tumbled into a valley below, taking the lives of nine nomadic yak herders living there.

He says previous predictive models of Greenland's ice loss did not adequately take into account the faster movement of its southern glaciers, which is accelerating the amount of ice entering the ocean: «Greenland is probably going to contribute more to sea level rise, and faster than predicted by these models.»

In addition, I had the freedom to conduct my own research in the Dry Valleys, taking ice samples from the surrounding glaciers to investigate microbial biodiversity in glacier ice.

The images from this period are not just a window into where the boundaries of glaciers were when the photographs were taken, but a measure of how far they had receded from their maximum expansion at the end of the Little Ice Age.

The difference could point to a problem with the models, which attempt to account for effects such as the loss of glaciers and ice caps and the fact that a warming ocean takes up more space.

The grounding line is important because nearly all glacier melting takes place on the underside of this floating portion, called the ice shelf.

So if you need to take a day off the slopes, skate directly on the famous Lake Louise with a backdrop of glaciers, or, in Banff, hit up Vermillion Lakes for epic views of Rundle Mountain or Lake Minnewanka for the longest track of ice around.

Nice post, Iceland is an amazing travel destination with its breath taking ice caves, Northern Lights, sea, volcanoes, glaciers and geysers.

Sure, you can poke about at the terminal face of the glaciers by yourself... but to really get to know the massive forces and stunning beauty of the ice, take a hike on the Franz Josef Glacier with Franz Josef Glacier Guides or the Fox Glacier with Fox Glacier Guiding.

On our new winter journey, experience the extreme contrasts of Iceland's fire and ice as we trek across snow - covered fields shrouded in geothermal steam, weather sub-zero temperatures from the warmth of outdoor thermal baths, and take in views of a glacier - capped volcano.

Take the Columbia Icefield Glacier Experience, operated by Brewster, and you travel on specially - built all - terrain Ice Explorers out onto the Athabasca glacier, the most accessible in the massive Columbia Icefield and an experience that no visitor to Canada should miss.

Although not initially that impressive, the Opera House's magic takes a little longer than love - at - first - sight admiration, though as sure as Norway's glaciers run deep with ancient ice, this man made glacial showpiece will eventually leave you spellbound.

Franz Josef Glacier Guides will take you deep in the heart of the glacier where you can squeeze through tight blue crevasses, slide through ice caves or even «franz shuffle» down near vertical walls of ice.

Scenic Highlights: Explore the popular resort town of Whistler, enjoy a historical tour through Banff with an expert from the Whyte Museum, search for grizzly and black bears on a float trip at Blue River, soak in natural hot springs, take an ice walk on an active glacier

Whilst here you can admire the dramatic sight of the surrounding snow - covered mountain peaks, and take in the superb carvings and ice sculptures inside the glacier.

Take an Ice Explorer ride on the 1,200 - foot - thick Columbia Icefield, and marvel at the stunning scenery, including alpine meadows, waterfalls, and massive glaciers.

On our third and final day we headed over to Tasman Glacier on a boat tour that took us on the lake for a closer look at the glacier and the «ice cubes» that had calved off of it in the prior months.

They did not take into account glacier slippage until fairly recently — and had in essence assumed that ice would simply melt in place.

When confronted with a contrarian who argues that somehow global warming isn't taking place, I would point to the Arctic sea ice and glaciers — which have even lasted through the warm periods of the past two thousand years — and probably well before.

However, the idea is simple, and I've talked about this much in many presentations this winter: Take the amount of ice you need to get rid of from Greenland to raise sea level 2 m in the next century, reduce it by your best estimate of the amount that would be removed by surface mass balance losses, and try to push the rest out of the aggregate cross-sectional area of Greenland's marine - based outlet glaciers.

News articles by The Times, Time, the Associated Press and others capture the basics in two new papers, one on six West Antarctic glaciers that appear to have nothing holding back eventual disappearance, accepted for publication in Geophysical Research Letters, and the other taking a closer look at one of those ice masses, the Thwaites Glacier, posted online today by the journal Science.

This takes into account that glaciers slowly disappear and therefore stop contributing — the total amount of glacier ice left is actually only enough to raise sea level by 15 - 37 cm.

Generally, sea levels are probably lower than today - taking everything into account - than they were in Roman and MWP as the snow / ice / glaciers had melted substantially then.

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.

New studies released on Monday show that a large portion of the West Antarctic Ice Sheet may have begun a slow but «unstoppable» collapse, with the demise of these glaciers taking place sometime during the next few centuries to as many as 1,000 years from now.

It could take decades or centuries, but change will be locked in by a 3C temperature rise, which would extensively melt ice caps, shrink glaciers and thermally expand the oceans so many current coastlines and low - lying plains would be under sea level.

Since then there have been numerous documentaries about climate change, each taking different tacks to generate interest: The 11th Hour, which sexed up expert testimony with Leonardo DiCaprio's narration; Merchants of Doubt, which explained climate denial as a scurrilous corporate con game; and Chasing Ice, which took cues from nature documentaries in its quest to capture melting glaciers on film.

and «How well can we overcome the challenges of core proxy interpretations from ice cores taken from small polythermal valley glaciers through modern - process studies?»

And heat is the only thing I know of to take it from sea level and put it in the sky in amounts to make the massive Ice sheets and glacier.

The NY Times has a detailed article by Justin Gillis about the loss of ice from glaciers, principally in Greenland and the dearth of information about the ice loss as more and more satellites take the plunge.

Ice does not conduct heat well, and a rise of a few degrees in the air would take thousands of years to affect a glacier base a mile away, where it could lubricate the flow.

Researchers at the University of Alaska Fairbanks have been taking airborne measurements of glacier surface height using a laser altimeter, an instrument that bounces a laser off of the ice surface and measures how long it takes to return.

«Global net energy budget is shown as a graph that takes account of net radiation received, ocean heat content change, and other net energy changes from melting sea ice, glaciers, etc..

Over the past decade, Miller has been taking radiocarbon dates on moss exposed from receding glaciers / ice caps on Baffin Island.

Once you presuppose that climate change is happening, it doesn't take a leap of faith to incorporate the assumption into models to estimate the health of polar bear populations, the progress of glaciers, and the vulnerability of Arctic sea ice.

In retrospect, most oceanographers and glaciologists find that estimate too low and say it fails to adequately take into account data suggesting that mountain glaciers and Greenland's continental ice will melt more quickly than initially predicted.....

Taken together, the data: 1) do not support the summer insolation hypothesis to explain Holocene glacier fluctuations in southernmost Patagonia; 2) confirm paleobotanical evidence for a warm, dry early Holocene; and 3) suggest that some glaciers in the region reached extents comparable to those of the Little Ice Age shortly before 5.29 e5.05 ka.

Accumulation and ablation both primarily take place during the warm season and the formation of superimposed ice on this continental - type glacier is important.

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 Glaciers took a comprehensive look at both surface and underside melt of three major west Antarctic glaciers near the Thwaites and Pine Island Glacier glaciers near the Thwaites and Pine Island Glacier systems.

Slate's Phil Plait was responsibly reserved in his coverage, emphasizing that although one of the press releases used the word «collapse,» the melting of this particular glacier — which by itself contains enough ice to raise global seas by three feet — is a process that will take centuries, if not longer, to play out.

Ice climbers taking cores on Taylor glacier.

Even as Rignot and colleagues suggest that loss of the Amundsen Sea embayment glaciers appears inevitable, it remains extremely difficult to predict exactly how this ice loss will unfold and how long it will take.

This can be seen in the output of GCMs and one can also see why this is roughly the case since the time scale of decay should be approximately the amount of time it takes to melt a square meter of glacier ice with the forcing change that would result from a loss of a square meter of ice in polar regions.

«In setting this goal,» says Brown, «my colleagues and I did not ask what would be politically popular but rather what would it take to have a decent shot at saving the Greenland ice sheet and at least the larger glaciers in the mountains of Asia.»

Historical records from early settlements reveal glacier boundaries, as does ice core data taken by drilling down into the annual layers of ice that make up glaciers.