RT @JCDAmos: Today's #Sentinel3 image of #iceberg #A23a on its approach to South Georgia. At present, the berg is heading straight for the territory, but we know the water current veers southeast when it encounters the continental shelf, so we expect A23a to make a sharp turn, too. British Antarctic Survey 🐧 Mission Antarctica by @MissionAntarctica A @grttme project - Other backups: @Hallotme