Articles | Volume 15, issue 3
The Cryosphere, 15, 1455–1483, 2021
https://doi.org/10.5194/tc-15-1455-2021
The Cryosphere, 15, 1455–1483, 2021
https://doi.org/10.5194/tc-15-1455-2021
Research article
24 Mar 2021
Research article | 24 Mar 2021

Challenges in predicting Greenland supraglacial lake drainages at the regional scale

Kristin Poinar and Lauren C. Andrews

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Cited articles

Ahn, Y. and Box, J. E.: Glacier velocities from time-lapse photos: technique development and first results from the Extreme Ice Survey (EIS) in Greenland, J. Glaciol., 56, 723–734, https://doi.org/10.3189/002214310793146313, 2010. a
Alley, R. B., Dupont, T. K., Parizek, B. R., and Anandakrishnan, S.: Access of surface meltwater to beds of sub-freezing glaciers: preliminary insights, Ann. Glaciol., 40, 8–14, 2005. a, b
Andrews, L. C.: Spatial and temporal evolution of the glacial hydrologic system of the western Greenland ice sheet: observational and remote sensing results, PhD thesis, University of Texas, Austin, 2015. a, b, c, d, e, f, g, h
Andrews, L. C., Catania, G. A., Hoffman, M. J., Gulley, J. D., Lüthi, M. P., Ryser, C., Hawley, R. L., and Neumann, T. A.: Direct observations of evolving subglacial drainage beneath the Greenland Ice Sheet, Nature, 514, 80–83, 2014. a, b, c, d, e
Andrews, L. C., Hoffman, M. J., Neumann, T. A., Catania, G. A., Lüthi, M. P., Hawley, R. L., Schild, K. M., Ryser, C., and Morriss, B. F.: Seasonal evolution of the subglacial hydrologic system modified by supraglacial lake drainage in western Greenland, J. Geophys. Res.-Earth, 123, 1479–1496, https://doi.org/10.1029/2017JF004585, 2018. a, b, c, d, e, f, g, h, i, j, k, l, m, n
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Short summary
This study addresses Greenland supraglacial lake drainages. We analyze ice deformation associated with lake drainages over 18 summers to assess whether precursor strain-rate events consistently precede lake drainages. We find that currently available remote sensing data products cannot resolve these events, and thus we cannot predict future lake drainages. Thus, future avenues for evaluating this hypothesis will require major field-based GPS or photogrammetry efforts.