Articles | Volume 12, issue 6
The Cryosphere, 12, 2087–2097, 2018
https://doi.org/10.5194/tc-12-2087-2018
The Cryosphere, 12, 2087–2097, 2018
https://doi.org/10.5194/tc-12-2087-2018

Research article 18 Jun 2018

Research article | 18 Jun 2018

Ice velocity of Jakobshavn Isbræ, Petermann Glacier, Nioghalvfjerdsfjorden, and Zachariæ Isstrøm, 2015–2017, from Sentinel 1-a/b SAR imagery

Adriano Lemos et al.

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Cited articles

An, L., Rignot, E., Elieff, S., Morlighem, M., Millan, R., Mouginot, J., and Paden, J.: Bed elevation of Jakobshavn Isbræ, West Greenland, from high-resolution airborne gravity and other data, Geophys. Res. Lett., 44, 3728–3736, https://doi.org/10.1002/2017GL073245, 2017. 
Armstrong, W. H., Anderson, R. S., and Fahnestock, M. A.: Spatial Patterns of Summer Speedup on South Central Alaska Glaciers, Geophys. Res. Lett., 44, 9379–9388, https://doi.org/10.1002/2017GL074370, 2017. 
Bondzio, J. H., Morlighem, M., Seroussi, H., Kleiner, T., Rückamp, M., Mouginot, J., and Humbert, A.: The mechanisms behind Jakobshavn Isbrae's acceleration and mass loss: a 3D thermomechanical model study, Geophys. Res. Lett., 44, 6252–6260, https://doi.org/10.1002/2017GL073309, 2017. 
Carr, J. R., Stokes, C. R., and Vielli, A.: Threefold increase in marine-terminating outlet glacier retreat rates across the Atlantic Arctic: 1992–2010, Ann. Glaciol., 58, 72–91, https://doi.org/10.1017/aog.2017.3, 2017. 
Cassotto, R., Fahnestock, M., Amundson, J. M., Truffer, M., and Joughin, I.: Seasonal and interannual variations in ice melange and its impact on terminus stability, Jakobshavn Isbræ, Greenland, J. Glaciol., 61, 76–88, https://doi.org/10.3189/2015JoG13J235, 2015. 
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Short summary
We present time-series of ice surface velocities on four key outlet glaciers in Greenland, derived from sequential satellite imagery acquired between October 2014 and February 2017. We demonstrate it is possible to resolve seasonal and inter-annual changes in outlet glacier with an estimated certainty of 10 %. These datasets are key for the timely identification of emerging signals of dynamic imbalance and for understanding the processes driving ice velocity change.