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. 2018 Mar 14;9:1064. doi: 10.1038/s41467-018-03420-8

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — High-elevation crevasses on the Greenland Ice Sheet. a Worldview image acquired on 21 June 2010 showing snow-filled crevasses at 1540 m elevation, 95 km inland from the ice sheet margin (48.05°W, 67.20°N) during a cascading lake drainage event (see Fig. 1b–d for contemporaneous model outputs). b Worldview image showing water-filled crevasses in the same area on 17 June 2011. Inset shows approximate location of imagery (coloured dots) and domain of numerical model (black box). c Worldview image from 12 August 2012 showing high-altitude crevasses at the S10 site (47.165W, 66.985N) at 1800 m elevation, 135 km inland from the margin, which is where Doyle et al.¹⁶ observed year-on-year increases in ice flow consistent with forcing by supraglacial lakes (Imagery © 2018 DigitalGlobe, Inc.)