Sentences with phrase «gigantic sheet of ice»

For millions of years, Antarctica, the frozen continent at the southern end of the planet, has been encased in a gigantic sheet of ice.

Not exact matches

In contrast to other mammals in Fennoscandia, the Norwegian lemming may have survived the last Ice Age in the far north, sealed off from the rest of the world by gigantic ice sheeIce Age in the far north, sealed off from the rest of the world by gigantic ice sheeice sheets.

Often defined as the area within the Arctic Circle, the unspoiled territory of the Arctic encompasses parts of Canada, Norway, Greenland, Iceland and Russia, and cruises here offer an up - close look at snowcapped mountains, deep fjords and gigantic ice sheets.

But over the last decade or so, glaciologists have come to appreciate that ice sheets are not gigantic lumps of «static» ice; warming effects can cause them to act erratically and to move much faster than simple models suggest.

Up until now, this kind of surface dynamic has not been documented on the gigantic, and not - so - long - ago - thought - invulnerable East Antarctic ice sheet.

What is important is that we recognize the existence of gigantic parts of the earth's climate system — such as West Antarctica's three - quadrillion - ton ice sheet — that can be tipped when a fractional temperature rise occurs in key locations.