Observations of Iceberg Meltwater Distribution in Sermilik Fjord, Southeast Greenland
We conducted repeat oceanographic surveys of 6 icebergs in Sermilik Fjord, southeast Greenland, during August 2018 to identify environmental factors driving the distribution of iceberg melt, including ocean thermal forcing and stratification, relative velocity between each iceberg and local ocean currents, and iceberg geometry. Our surveys include near-iceberg properties sampled using a remotely-operated surface vehicle (Jetyak) equipped with an ADCP (Acoustic Doppler Current Profiler) and temperature and salinity sensors, as well as full-depth temperature and salinity profiles. Iceberg depth and shape were measured using multibeam sonar and aerial imagery, and some iceberg locations were tracked with GPS. We compare our findings to numerical and laboratory simulations, and discuss their implications for iceberg melt distribution in the context of a decade-long observational record of ocean variability in Sermilik Fjord.