Sentences with phrase «oldest glacier ice»

Not exact matches

The study suggests that up until 1997, whenever the ice caps and glaciers melted, the runoff would be filtered through a layer of older snow called the «firn» and trickle down to the ice surface, where it would freeze again, allowing the glaciers and ice caps to grow each winter.

... the United Nations said today, citing a case in Chile where police are investigating the theft of some 5,000 kilograms of millennia - old ice from the Jorge Montt glacier....

We wandered old Indian trails together, hiked virgin forests and rode Zodiacs up to the calving ice faces of towering glaciers.

I had forgotten all about dinosaurs, the Ice Age, Adam and Eve and glaciers until I went to visit my old summer camp, the International Teen Camp at the Ecole Nouvelle in Chailly, Lausanne.

(Ötzi, the 5,000 - year - old «ice man» found in an Alpine glacier, was carrying the stuff in his pouch.)

The trouble is, ice cores are the gold standard for estimating past atmospheric carbon dioxide levels, and Marchant says the Dry Valley glaciers are the only ones known to contain ice that old.

Researchers from the Emil Racoviță Institute of Speleology in Cluj - Napoca, Romania, and USF's School of Geosciences gathered their evidence in the world's most - explored ice cave and oldest cave glacier, hidden deep in the heart of Transylvania in central Romania.

«Ice cave in Transylvania yields window into region's past: Scientists conduct ancient climate research on oldest cave glacier in the world.»

Radiocarbon dating of minute leaf and wood fragments preserved in the cave's ice indicates that its glacier is at least 10,500 years old, making it the oldest cave glacier in the world and one of the oldest glaciers on Earth outside the polar regions.

Romania's Scarisoara Ice Cave holds the world's oldest cave glacier, built up by water dripping into the cavern over thousands of years.

It's possible that even older photographs in the Danish archive could be used in a similar way to provide even more pre-satellite observations of changes to Greenland's ice, as well as more in - depths studies of particular glaciers

National Snow and Ice Data Center This comprehensive National Snow and Ice Data Center Web site, useful for teacher reference or for older students, includes information on snow and ice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberIce Data Center This comprehensive National Snow and Ice Data Center Web site, useful for teacher reference or for older students, includes information on snow and ice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberIce Data Center Web site, useful for teacher reference or for older students, includes information on snow and ice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberice as indicators of climate change, snow avalanches, blizzards, historical snow data, the climate of the Arctic and Antarctic regions, glaciers, sea ice, ice sheets, ice shelves, and iceberice, ice sheets, ice shelves, and iceberice sheets, ice shelves, and iceberice shelves, and icebergs.

There is of course a lot of uncertainty about the details, that affect the melt rates, we just don't know how quickly warmer seawater will undercut floating glaciers, and buildup of darker older snow / ice layers will increase the amount of absorbed sun light.

Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly warm, rain fall on ice; — «stuck» weather systems bringing more and more warm tropical air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean currents -LRB-?)

Glaciers have continued to melt at accelerating rates, arctic summer ice is declining at accelerating rates, more 6 - 10 thousand year old ice shelves are collapsing.

The aim is to establish the past history of ice advance and retreat, to look for old grounding lines - the locations where Larsen's feeding glaciers have previously rested on the seafloor.

Kilimanjaro's majestic glacial cap of 11,000 - year - old ice has long captured imaginations the world over, so it was not surprising that environmentalists focused their attention on it when scientists reported in 2001 that glaciers around the world were retreating, partly as a result of global warming caused by emissions of heat - trapping «greenhouse» gases from smokestacks and tailpipes.

And older climate models did not include dynamic ice sheet vulnerabilities — like high latent - heat ocean water coming into contact with the submerged faces of sea - fronting glaciers, the ability of surface melt water to break up glaciers by pooling into cracks and forcing them apart (hydrofracturing), or the innate rigidity and frailty of steep ice cliffs which render them susceptible to rapid toppling.

One aspect which inescapable, glacier ice is at most couple million years old.

Some of it was clearly preserved from living things on the ice itself, some of was scraped up as the glaciers moved over old soils, and some of it was soot from fossil fuel combustion or distant forest fires.

80 - year - old photo plates from Danish polar explorerProve that Greenland's glaciers melted faster in 30s than they did todayBrief cooling period mid-century re-froze icePre - satellite images of ice shelves are extremely rare By Rob Waugh Published: 08:06 GMT, 30 May 2012 Updated: 11:54 GMT, 30 May 2012 The glacier named after Danish explorer Knud Rasmussen in Greenland A stash of 80 - year - old photo plates in a Danish basement has proved that Greenland's ice was melting even faster then that it is now.

Lost photos prove Greenland's ice was melting FASTER 80 years ago than today 80 - year - old photo plates from Danish polar explorerProve that Greenland's glaciers melted faster in 30s than they did todayBrief cooling period mid-century re-froze icePre - satellite images of ice shelves are extremely rare By Rob Waugh Published: 08:06 GMT, 30 May 2012 Updated: 11:54 GMT, 30 May 2012 The glacier named after Danish explorer Knud Rasmussen in Greenland A stash of 80 - year - old photo plates in a Danish basement has proved that Greenland's ice was melting even faster then that it is now.

And 10 Thousand BC «luxury glacier water» comes from (the company says) 10,000 - year - old ice from glaciers (for fewer pollutants).

The 1991 discovery of the 5,000 year - old «ice man» preserved in a glacier in the European Alps fascinated the world, yet the discovery meant that this glacier had reached a 5,000 - year minimum.

This is old snow in the process of being compacted into glacier ice, and covers the island in a layer up to 80 metres thick.