Sentences with phrase «glacier ice breakups»

Not exact matches

The full effects of ice shelf breakup on glacier demise will not be known for some time.

Scientists still do not know what triggers the breakup of an ice shelf or when future ones will occur, so they struggle to estimate how quickly glaciers will dump their ice into the ocean and therefore how much sea level will rise.

The researchers used underwater microphones aboard buoys to record the ambient noises of a variety of ice breakups at the Hans Glacier in Norway and synchronized the recordings with time - lapse photos of the glacier (as shown in the video above).

«Within a few months» of a breakup, explains glaciologist Ted Scambos of the National Snow and Ice Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.&raqIce Data Center at the University of Colorado at Boulder, the glacier «accelerates significantly, and within a year or two, it can be moving [toward the ocean] up to four times as fast as it moved when the ice shelf was intact.&raqice shelf was intact.»

The consequences of global sea level rise could be even scarier than the worst - case scenarios predicted by the dominant climate models, which don't fully account for the fast breakup of ice sheets and glaciers, NASA scientists said today (Aug. 26) at a press briefing.

Since IPCC (2001) the cryosphere has undergone significant changes, such as the substantial retreat of arctic sea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelves.

An additional new feature is the increasingly visible fast dynamic response of ice shelves, for example, the dramatic breakup of the Larsen B Ice Shelf in 2002, and the acceleration of tributary glaciers and ice streams, with possible consequences for the adjacent part of the ice sheeice shelves, for example, the dramatic breakup of the Larsen B Ice Shelf in 2002, and the acceleration of tributary glaciers and ice streams, with possible consequences for the adjacent part of the ice sheeIce Shelf in 2002, and the acceleration of tributary glaciers and ice streams, with possible consequences for the adjacent part of the ice sheeice streams, with possible consequences for the adjacent part of the ice sheeice sheets.

The same is true for ice melting: All glaciers of Greenland are receding, but the breakup point of the largest tidal glacier (near Illulisat) moved faster inland in the 1930 - 1940 period than today.

I believe that what the phrase is trying to get at is either the acceleration relative to the pause in the 1950 - 1970 period, or the acceleration in accumulation of noticeable consequences — worldwide glacier melt, sea ice retreat, earlier onset of springtime, (possibly) increasingly intense hurricanes, Larsen - B breakup, melting of Greenland along the margins, etc..

Breakup of an ice shelf (Larsen) leads to a speedup of glacier movement: Rignot et al. (2004), Scambos et al. (2004)(who also note lubrication by percolating water, see following note).

The breakup of these ice shelves is a concern, because that would essentially remove the stopper and greatly accelerate the rate at which glacier melt finds its way to the ocean.

Losses from surface melting, water runoff, the breakup of glaciers into the ocean (calving), and the transformation of solid ice into water vapor (sublimation) exceed any gains through snowfall.2, 3,4,5 The Greenland ice sheet loses most of its mass on the perimeter, through a dozen fast - moving glaciers, including Helheim.5, 6

The strong warming of the Antarctic Peninsula has led to the breakup of large ice shelves whose presence tended to impede the oceanward flow of mountain glaciers on the peninsula.