The new work provides a baseline for future measurement of Antarctic ice changes and can be used to validate numerical ice sheet
models that are necessary to make projections of sea level.
It reveals how the glaciers that drain from the Greenland Ice Sheet
during the possible melting will contribute to future sea-level rise.
Washington DC [USA], November 10 ( ANI ): A new study shows that global warming has reduced the mass of the Cordilleran Ice Sheet
by half in as little as 500 years, indicating the Greenland Ice Sheet
could face a similar fate.
From that, Prieto and his colleagues surmised that "by looking at velocity changes, we can make predictions of the volume change of the ice sheet
It focused on increasing understanding of how an ice sheet
reacts with areas both above and below ground.
To do this, NASA Earth is using instruments aboard aircraft, ships, sensors placed in the ocean, and spacecraft in Earth's orbit to collect the data of all of the variables affecting the Greenland ice sheet
This loss of ice into the ocean would cause a global sea level rise of up to five metres if the ice sheet
The ice sheet
stockpiles enough water to raise sea levels by about 60 meters and reshape Earth's coastlines.
The water that drained from the lake to the base of the ice sheet
lubricates the interface between ice and rock, allowing the ice sheet
to slide faster toward the coast.
Vertical shafts in the ice sheet
, called moulins, can funnel melt water beneath parts of the glacier and lift them up.
Recent analysis of data from both the ICESat satellite and an ongoing airborne mission called Operation IceBridge show us how the surface elevation of the ice sheet
ISLAMABAD -- British researchers have discovered two subglacial lakes 800 meters below the Greenland ice sheet