Table 1 Midgardsormen grounding line migration

From: Large ice loss variability at Nioghalvfjerdsfjorden Glacier, Northeast-Greenland

Date of landsat scene Total displacement (m) Ice thickness (m) Relative thickness change (m/year)
14-08-1994 −682 ± 60   
25-07-1998 0 282 ± 6.4  
26-06-2001 391 ± 60 282 ± 6.4 −0.14 ± 2.2
10-06-2002 531 ± 60 269 ± 6.4 −12.83 ± 6.7
20-07-2005 841 ± 60 243 ± 6.4 −8.28 ± 2.1
31-07-2006 911 ± 60 242 ± 6.4 −1.15 ± 6.2
11-08-2007 946 ± 60 240 ± 6.4 −2.69 ± 6.2
08-08-2009 998 ± 60 236 ± 6.4 −1.79 ± 3.2
16-07-2010 1076 ± 60 224 ± 6.4 −13.10 ± 6.8
07-07-2012 1227 ± 60 209 ± 6.4 −7.41 ± 3.2
12-07-2014 1402 ± 60 196 ± 6.4 −6.50 ± 3.2
  1. Observed northward displacement of Midgardsormen between 1994 and 2014 based on the available Landsat scenes. Ice thickness and its changes are derived from the displacement, the known bed topography and the floatation criterion of the ice shelf. The error calculations are discussed in the Methods section