Pressure ridges in a fjord's sea ice clearly delineate the zone of influence of calving from a small outlet glacier south of Jakobshavn Isbræ

LC-130 heading west of Kangerlussuaq shortly after take-off from Summit, with P-3’s #4 (rightmost) propeller and engine nacelle in foreground

LC-130 warming up engines at the recently reopened Summit, central Greenland

Map of today’s mission

Snow-filled bedrock lineations

Iceberg in Ilulissat fjord

Ice rubble possibly due to drainage of a subglacial lake

The ice prow that separates the main trunk of Jakobshavn Isbræ from the now-stagnant outlet glacier to the north, also demarcating the iceberg supply

The complex southern shear margin of Jakobshavn Isbræ, with an ambiguous grounded-to-floating transition

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