Articles | Volume 19, issue 1
https://doi.org/10.5194/tc-19-525-2025
https://doi.org/10.5194/tc-19-525-2025
Research article
 | 
31 Jan 2025
Research article |  | 31 Jan 2025

Ice speed of a Greenlandic tidewater glacier modulated by tide, melt, and rain

Shin Sugiyama, Shun Tsutaki, Daiki Sakakibara, Izumi Asaji, Ken Kondo, Yefan Wang, Evgeny Podolskiy, Guillaume Jouvet, and Martin Funk

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Cited articles

Anandakrishnan, S., Voigt, D. E., Alley, R. B., and King, M. A.: Ice stream D flow speed is strongly modulated by the tide beneath the Ross Ice Shelf, Geophys. Res. Lett., 30, 1361, https://doi.org/10.1029/2002GL016329, 2003. 
Andersen, M. L., Larsen, T. B., Nettles, M., Elosegui, P., Van As, D., Hamilton, G. S., Stearns, L. A., Davis, J. L., Ahlstrøm, A. P., De Juan, J., Ekström, G., Stenseng, L., Khan, S. A., Forsberg, R., and Dahl-Jensen, D.: Spatial and temporal melt variability at Helheim Glacier, East Greenland, and its effect on ice dynamics, J. Geophys. Res.-Earth, 115, F04041, https://doi.org/10.1029/2010JF001760, 2010. 
Andersen, M. L., Nettles, M., Elosegui, P., Larsen, T. B., Hamilton, G. S., and Stearns, L. A.: Quantitative estimates of velocity sensitivity to surface melt variations at a large Greenland outlet glacier, J. Glaciol., 57, 609–620, https://doi.org/10.3189/002214311797409785, 2011. 
Bartholomaus, T. C., Anderson, R. S., and Anderson, S. P.: Response of glacier basal motion to transient water storage, Nat. Geosci., 1, 33–37, https://doi.org/10.1038/ngeo.2007.52, 2008. 
Benn, D. I., Warren, C. R., and Mottram, R. H.: Calving processes and the dynamics of calving glaciers, Earth-Sci. Rev., 82, 143–179, https://doi.org/10.1016/j.earscirev.2007.02.002, 2007. 
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Short summary
We report flow speed variations near the front of a tidewater glacier in Greenland. Ice flow near the glacier front is crucial for the mass loss of the Greenland ice sheet, but in situ data are hard to obtain. Our unique in situ GPS data revealed fine details of short-term speed variations associated with melting, ocean tides, and rain. The results are important for understanding the response of tidewater glaciers to changing environments, such as warming, more frequent rain, and ice thinning.
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