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Seasonal Speedup Along the Western Flank of the Greenland Ice Sheet
Open accessAbstract
It has been widely hypothesized that a warmer climate in Greenland would increase the volume of lubricating surface meltwater reaching the ice-bedrock interface, accelerating ice flow and increasing mass loss. We have assembled a data set that provides a synoptic-scale view, spanning ice-sheet to outlet-glacier flow, with which to evaluate this hypothesis. On the ice sheet, these data reveal summer speedups (50 to 100%) consistent with, but somewhat larger than, earlier observations. The relative speedup of outlet glaciers, however, is far smaller (<15%). Furthermore, the dominant seasonal influence on Jakobshavn Isbrae's flow is the calving front's annual advance and retreat. With other effects producing outlet-glacier speedups an order of magnitude larger, seasonal melt's influence on ice flow is likely confined to those regions dominated by ice-sheet flow.
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Cited by
Irreversible climate change due to carbon dioxide emissions
Solomon, S., Plattner, G.-K., Knutti, R., & Friedlingstein, P. (2009) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0812721106 · Cited by 3,217
Acceleration of Jakobshavn Isbræ triggered by warm subsurface ocean waters
Holland, D. M., Thomas, R. H., de Young, B., Ribergaard, M. H., & Lyberth, B. (2008) · Nature Geoscience · doi:10.1038/ngeo316 · Cited by 818
Werder, M. A., Hewitt, I. J., Schoof, C. G., & Flowers, G. E. (2013) · Journal of Geophysical Research: Earth Surface · doi:10.1002/jgrf.20146 · Cited by 332
Bindschadler, R. A., Nowicki, S., Abe-Ouchi, A., Aschwanden, A., Choi, H., Fastook, J., Granzow, G., Greve, R., Gutowski, G., Herzfeld, U., et al. (2013) · Journal of Glaciology · doi:10.3189/2013jog12j125 · Cited by 275
Metadata
- Authors
- Joughin, I., Das, S. B., King, M. A., Smith, B. E., Howat, I. M., & Moon, T.
- Venue
- Science
- Published
- 2008-05-09
- Volume
- 320
- Issue
- 5877
- Pages
- 781-783
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2047507732
- Cited by
- 449
- References
- 0
- FWCI
- 29.79
- Type
- journal article
- Language
- en
- Open access
- green
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- Joughin, I., Das, S. B., King, M. A., Smith, B. E., Howat, I. M., & Moon, T. (2008). Seasonal Speedup Along the Western Flank of the Greenland Ice Sheet. Science. https://doi.org/10.1126/science.1153288
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