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. Calving is a crucial process for the recently observeddynamic mass loss changes of the Greenland ice sheet. Despite its importancefor global sea level change, major limitations in understanding the processof calving remain. This study presents high-resolution calving event dataand statistics recorded with a terrestrial radar interferometer at the frontof Eqip Sermia, a marine-terminating outlet glacier in Greenland. Thederived digital elevation models with a spatial resolution of several metresrecorded at 1 min intervals were processed to provide source areas andvolumes of 906 individual calving events during a 6 d period. The calvingfront can be divided into sectors ending in shallow and deep water withdifferent calving statistics and styles. For the shallow sector,characterized by an inclined and very high front, calving events are morefrequent and larger than for the vertical ice cliff of the deep sector. Wesuggest that the calving volume deficiency of 90 % relative to theestimated ice flux in our observations of the deep sector is removed byoceanic melt, subaquatic calving, and small aerial calving events. Assuming asimilar ice thickness for both sectors implies that subaqueous mass lossmust be substantial for this sector with a contribution of up to 65 % tothe frontal mass loss. The size distribution of the shallow sector isrepresented by a log-normal model, while for the deep sector the log-normaland power-law model fit well, but none of them are significantly better.Variations in calving activity and style between the sectors seem to becontrolled by the bed topography and the front geometry. Within the shortobservation period no simple relationship between environmental forcings andcalving frequency or event volume could be detected.

Calving event size measurements and statistics of Eqip Sermia, Greenland, from terrestrial radar interferometry