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. 2021 May 14;7(20):eabe7136. doi: 10.1126/sciadv.abe7136

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 5 — (A) Ice temperature distribution of Anomaly-208, with dotted black line showing the final observed temperature profile. Solid black line is a theoretical temperature profile after 400 days of vertical diffusion and no horizontal advection. Dashed yellow line is temperature profile obtained with a strain band model with square-wave heat source and sink as shown in (B). (B) Energy flux input and sink used in the model. (C) Schematic representation of strain band (darkening blue band) with (a) possible deep fracture, (b) advecting cold ice, and (c) concentrated deformation.