Sentences with phrase «several kilometers of ice»

For instance, Ekström says, in several cases major landslides have fallen upon glaciers and then scooted nearly friction - free across several kilometers of ice — which tends to muffle seismic vibrations until the speeding material slams into the opposite side of the valley.

Not exact matches

Several Russian news outlets are reporting that Russian scientists have successfully drilled to Antarctica's Lake Vostok, a massive liquid lake cut off from daylight for 14 million years and buried beneath 2 miles (3.7 kilometers) of ice.

The new images, at resolutions of about 80 meters per pixel, show a striking shoreline, where smooth plains of nitrogen ice from Pluto's «heart» rub up against water ice mountains several kilometers high.

Schimdt has found evidence that warm ocean currents and convective forces beneath Europa's frozen shell can cause large blocks of ice to overturn and melt, bringing vast pockets of water, sometimes holding as much liquid as all of the Great Lakes combined, to within several kilometers of the moon's icy surface.

The overall retreat of several kilometers that has occurred over the past 20,000 years was interrupted by a stillstand or a re-advance of several hundred years at the beginning of the ACR, and then by increasingly minor glacial episodes at the end of the YD, at the beginning of the Holocene (around 10,000 years ago) and during the Little Ice Age (13th to 19th centuries).

Jupiter's moon Europa harbors a planetwide ocean — hidden beneath several dozen kilometers of ice.

Leaving aside the collapse of the Larsen - B ice shelf and other ice shelves in Antarctica, is it too simplistic to expect that dramatic changes should be anticipated first in the Arctic because it is sea covered by a few meters of sea ice and therefore more susceptible to change, in comparison to Antarctica (which is obviously land covered by glacial ice up to several kilometers thick in places)?

Virtually all of what is now Canada, together with considerable portions of the northern US, was covered with an ice sheet several kilometers thick.

Leaving aside the collapse of the Larsen - B ice shelf and other ice shelves in Antarctica, is it too simplistic to expect that dramatic changes should be anticipated first in the Arctic because it is sea covered by a few meters of sea ice and therefore more susceptible to change, in comparison to Antarctica (which is obviously land covered by glacial ice up to several kilometers thick in places)?

Virtually all of what is now Canada, together with considerable portions of the northern US, was covered with an ice sheet several kilometers thick.

From what scientists have learned, this ice sheet is far from static: It has «streams» of fast - moving ice running toward the sea at a rate of several kilometers a year.

With 19 responses for the pan-arctic (and 7 for the regional outlook), including several new contributors, the June Sea Ice Outlook projects a September 2011 arctic sea extent median value of 4.7 million square kilometers (Figure 1).

The range of responses (2.9 to 5.6 million square kilometers) illustrates several of the challenges faced by any forecast of arctic summer ice evolution.

As surface temperture is altitude dependent one might have thought the first thing to check would be a map, as the arctic ice lies at sea level + 9 % of its thickness, while the antarctic ice sits several kilometers high in the sky, and the surrounding apron of the stuff is immune to windage because of the circumpolar continent in its midst.

GIA is not caused by current glacier melt, but by the rebound of the Earth from the several kilometer thick ice sheets that covered much of North America and Europe around 20,000 years ago.