About the cover

July 2014 Volume 7 No 7

The factors that control the submarine melt rate at Greenland's glaciers are uncertain and largely inferred from brief summer surveys in the fjords where glaciers terminate. Continuous records of water properties and velocity for the months September to May from two large Greenland fjords reveal strong variability on 3- to 10-day timescales as a result of pulses of water that are propagated from the shelf ocean. The image shows an iceberg in Sermilik Fjord on Greenland's southeast coast, in August 2013. The iceberg is a fragment of Helheim Glacier that has calved into the ocean.

Letter p503

IMAGE: MAGDALENA ANDRES

COVER DESIGN: DAVID SHAND

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