NORTH AND NORTHEAST GREENLAND ICE DISCHARGE FROM SATELLITE RADAR INTERFEROMETRY

Ice discharge from north and northeast Greenland calculated from satel lite radar interferometry data of 14 outlet glaciers is 3.5 times that estimated from iceberg production. The satellite estimates, obtained at the grounding line of the outlet glaciers, differ from those obtain ed at the glacier front, because basal melting is extensive at the und erside of the floating glacier sections. The results suggest that the north and northeast parts of the Greenland ice sheet may be thinning a nd contributing positively to sea-level rise.