Not exact matches
Unlike the great ice sheet of Antarctica, the Greenland ice sheet is melting both on its surface and also at
outlet glaciers that drain the ice sheet's mass through deep fjords, where these
glaciers extend out into the ocean and often terminate in dynamic
calving fronts, giving up gigaton - sized icebergs at times.
Calving from the floating termini of
outlet glaciers and ice shelves is just the beginning of an interesting chain of events that can subsequently have important impacts on human life and property.
The heavily crevassed surface (extending to the distant horizon) of Jakobshavn Isbrae, one of Greenland's fastest
outlet glaciers, is shown on this large iceberg that
calved from the
glacier's end.
The many fast - moving
outlet glaciers around the Greenland coast are constantly
calving ice into the ocean, where the melting ice affects sea level.
Outlet glaciers reaching the ocean can disintegrate in two principal ways: melting by warm waters or by
calving ice into the ocean.
The
outlet glaciers have a balance of forces at the
calving front.
The acceleration to worry about is from changes in the
calving front, and the resultant retreat and acceleration that has been observed on almost all Greenland marine terminating
outlet glaciers.