Greenland sits over an area of abnormally hot mantle material that drives a widespread melting beneath the ice sheet and rapid ice flow over a distance of several hundred kilometres, a new study has found.
Greenlandís lithosphere has hot depths which originate in its distant geological past and cause the islandís ice to rapidly flow and melt from below.
An anomaly zone crosses Greenland from west to east where present-day flow of heat from the Earthís interior is elevated.
With this anomaly, researchers from GFZ German Research Centre for Geosciences (GFZ) could explain observations from radar and ice core drilling data that indicate a widespread melting beneath the ice sheet and increased sliding at the base of the ice that drives the rapid ice flow over a distance of 750 kilometres from the summit area of the Greenland ice sheet to the North Atlantic Ocean.
More Settled Science: Earthís Internal Heat Driving Greenlandís Ice Melt, Scientists Discover | The Global Warming Policy Forum (GWPF)
Earth's internal heat drives rapid ice flow and subglacial melting in Greenland - Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences