Articles | Volume 14, issue 10
The Cryosphere, 14, 3487–3502, 2020
https://doi.org/10.5194/tc-14-3487-2020
The Cryosphere, 14, 3487–3502, 2020
https://doi.org/10.5194/tc-14-3487-2020

Research article 22 Oct 2020

Research article | 22 Oct 2020

Surface velocity of the Northeast Greenland Ice Stream (NEGIS): assessment of interior velocities derived from satellite data by GPS

Christine S. Hvidberg et al.

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The Northeast Greenland Ice Stream (NEGIS) extends around 600 km from its onset in the interior of Greenland to the coast. Several maps of surface velocity and topography in Greenland exist, but accuracy is limited due to the lack of validation data. Here we present results from a 5-year GPS survey in an interior section of NEGIS. We use the data to assess a list of satellite-derived ice velocity and surface elevation products and discuss the implications for the ice stream flow in the area.