Fig. 1
From: Instability of the Northeast Greenland Ice Stream over the last 45,000 years
Field location of the Northeast Greenland Ice Stream. a Map with minimum and maximum LGM ice extent8, and velocity map of the inland ice69. Orange circles are sites with existing 14C dates reworked in Little Ice Age moraines or from raised marine deposits presently dammed by NEGIS27,28. b Inset map with bed topography, merged from existing topographic and bathymetric data with mass conservation (beneath grounded ice) and gravity inversion (beneath floating ice and open ocean)70. Outline of glacier margin is based on GIMP data71. The observed and modeled ice front and grounding line positions in 2014 C.E. and under maximum melting scenarios in 2100 C.E.7. New cosmogenic surface exposure ages (yellow circles) in ka (thousand years ago) from outer coast and proximal to the present ice margin in Northeast Greenland 78°N to 80°N. Red circles mark new 14C dates of reworked shell fragments from a moraine on Lambert Land
