Articles | Volume 9, issue 4
https://doi.org/10.5194/tc-9-1649-2015
https://doi.org/10.5194/tc-9-1649-2015
Research article
 | 
21 Aug 2015
Research article |  | 21 Aug 2015

Temporal variations in the flow of a large Antarctic ice stream controlled by tidally induced changes in the subglacial water system

S. H. R. Rosier, G. H. Gudmundsson, and J. A. M. Green

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Sebastian Rosier on behalf of the Authors (06 Jul 2015)
ED: Publish as is (22 Jul 2015) by Frank Pattyn
AR by Sebastian Rosier on behalf of the Authors (22 Jul 2015)  Manuscript 
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Short summary
We use a full-Stokes model to investigate the long period modulation of Rutford Ice Stream flow by the ocean tide. We find that using a nonlinear sliding law cannot fully explain the measurements and an additional mechanism, whereby tidally induced subglacial pressure variations are transmitted upstream from the grounding line, is also required to match the large amplitude and decay length scale of the observations.