Abstract
Investigation of the ice, debris and stable isotope characteristics of basal ice exposed at the margin of the Greenland ice sheet provides a means of testing and refining models of ice-sheet erosion and deposition. The basal ice exposed at the ice-sheet margin gives evidence of the processes operating at the bed at different locations, which can be used to constrain theoretical models predicting varying basal conditions1,2. Improved understanding of the effects of isotope fractionation in hydrogen and oxygen caused by freezing processes at the bed which modify the isotope characteristics of the basal ice layers enables us to report evidence of two separate zones of debris entrainment beneath the ice sheet.
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References
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Sugden, D., Knight, P., Livesey, N. et al. Evidence for two zones of debris entrainment beneath the Greenland ice sheet. Nature 328, 238–241 (1987). https://doi.org/10.1038/328238a0
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DOI: https://doi.org/10.1038/328238a0
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