Sentences with phrase «much ice the continent»

In the end, the panel decided there was too much uncertainty in the Antarctic models to say how much ice the continent would lose over this century.

Not exact matches

When it's cold enough to form ice shelves that extend over the Antarctic land mass and into the ocean, much of what drops to the seafloor is sand and gravel that the glacier has picked up on its slow march from the continent's ice cap.

And that is because especially lining the peninsula as that ice melts, it makes that continent much more accessible to exploitation, oil drilling, precious mineral searches, which is suddenly going on now.

The Antarctic ice sheet, the thick layer of ice covering much of the continent, is anchored in place by its floating fringe, shelves of ice that jut out into the surrounding ocean.

Meltzer's research team found that nearly all sediment layers purported to be from the Ice Age at 29 sites in North America and on three other continents are actually either much younger or much older.

Massive ice sheets grew across the Antarctic continent, major animal groups shifted, and ocean temperatures decreased by as much as 5 degrees.

The researchers found that during glacial periods when the atmosphere was colder and sea ice was far more extensive, deep ocean waters came to the surface much further north of the Antarctic continent than they do today.

The oldest ever European genome shows that much of the continent's rich genetic mix stretches back over 30,000 years and survived the last ice age

Between 17,000 and 27,000 years ago, much of the planet's water was frozen at the ice caps, and the continents were extremely arid.

The most recent NASA data I could find on the Antarctic 1981 - 2007 in an article on the Wilkins Ice Shelf disintegration looks much worse: it shows most of the continent as warming.

I think the latter is likely — these recent cold winters are part of the much - discussed «warm Arctic — cold continents» pattern (see, eg, Overland et al 2011) and could be related to the dwindling ice cover on the Arctic Ocean, as we explained here.

Apart from these last concerns, the WAIS is much less worrying than the GIS, because the huge thermal inertia and albedo effect of the EAIS, the antarctic continent itself, and the large amount of antarctic sea ice in the southern winter, all act to reduce the degree of warming for the WAIS (whereas the GIS is the victim of various unfortunate circumstances which amplify warming there).

There is no reason whatsoever to expect that similar behavior will be seen at the different poles; a few feet of ice floating on water is not exactly the same as two kilometers of ice piled up on a continent (East Antarctica) nor is either of those much like a kilometer of ice sitting on the sea floor (West Antarctica).

Repeated Pleistocene Epoch ice ages covered much of North America, Europe and Asia under mile - thick ice sheets that denuded continents, stunted plant growth, and dropped ocean levels 400 feet for thousands of years.

(In the Antarctic, ice is not constrained by continents, and thick multiyear ice is relatively scarce, Although Antarctic sea ice expands much more than Arctic ice, it also melts more rapidly each summer.

The group found that the icy winds blowing off Antarctica, as well as a powerful ocean current that circles the frozen continent, are much larger factors in the formation and persistence of Antarctic sea ice than changes in temperature.

Since then, scientists have been focused on studying just what happened at Larsen B and studying the increasingly vulnerable — and much bigger — Larsen C, the continent's fourth - largest ice shelf that's just next door.

Instead of an ice - filled ocean surrounded by land, it is a continent surrounded by ocean that sees much more variability in sea ice levels from year to year for reasons that aren't fully understood.

Historical evidence of Little Ice Age events is much more plentiful in Europe than elsewhere but the documentation from other continents though scantier, is supported by a great volume of field evidence (e.g. Hope et al 1976, Hastenrath 1984) which is presented in Chapters 7, 8 and 9.

In the last 5 years or so, an effort has been under way, much of it under the banner «International Trans Antarctic Scientific Expedition» (ITASE), to do this by collecting many dozens of ice cores from across the Antarctic continent.

Cooling resumed 15 million years ago, and the Antarctic Ice Sheet expanded again to cover much of the continent.