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* a& |4 F e# K: O& d/ T! TCOVER A jumble of icebergs forms in front of the heavily crevassed
* @" ~9 w# h6 m1 O: P6 O3 Fcalving front of Jakobshavn Isbr?, one of the fastest outlet glaciers draining
1 j9 A, \: n8 e, J1 v* @( Pthe Greenland Ice Sheet. The ~5-kilometer-wide ice front rises ~80 meters out of " n$ C5 f/ Y, R3 z* t- W# M
the water and extends more than 600 meters underwater. Recent research shows
, Q3 v- R+ x3 e& Z7 ?6 a3 l7 ^that the speeds of Greenland glaciers are increasing. See page 576. Photo:
1 }* h6 L1 p* W8 j/ b. BIan Joughin , l" o: k- [/ A6 Z1 R
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