Articles | Volume 14, issue 1
The Cryosphere, 14, 17–37, 2020
The Cryosphere, 14, 17–37, 2020

Research article 09 Jan 2020

Research article | 09 Jan 2020

Exploring mechanisms responsible for tidal modulation in flow of the Filchner–Ronne Ice Shelf

Sebastian H. R. Rosier and G. Hilmar Gudmundsson

Data sets

Time series from GPS units deployed on ice streams and the adjoining iceshelf across the Filchner-Ronne region, Antarctica, 2005–2016 G. H. Gudmundsson, N. Fenney, and S. H. R. Rosier

Short summary
The flow of ice shelves is now known to be strongly affected by ocean tides, but the mechanism by which this happens is unclear. We use a viscoelastic model to try to reproduce observations of this behaviour on the Filchner–Ronne Ice Shelf in Antarctica. We find that tilting of the ice shelf explains the short-period behaviour, while tidally induced movement of the grounding line (the boundary between grounded and floating ice) explains the more complex long-period response.