Strong tidal variations in ice flow observed across the entire Ronne Ice Shelf and adjoining ice streams

Rosier, Sebastian H. R.; Gudmundsson, G. Hilmar; King, Matt A.; Nicholls, Keith W.; Makinson, Keith; Corr, Hugh F. J.

doi:https://doi.org/10.5194/essd-9-849-2017

Articles | Volume 9, issue 2

https://doi.org/10.5194/essd-9-849-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/essd-9-849-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 9, issue 2

20 Nov 2017

| 20 Nov 2017

Strong tidal variations in ice flow observed across the entire Ronne Ice Shelf and adjoining ice streams

Sebastian H. R. Rosier, G. Hilmar Gudmundsson, Matt A. King, Keith W. Nicholls, Keith Makinson, and Hugh F. J. Corr

Data sets

Timeseries from GPS units deployed on ice streams and the adjoining ice shelf across the Filchner-Ronne region, Antarctica, 2005-2016 N. Fenney, H. Gudmundsson, and S. Rosier https://doi.org/10.5285/4fe11286-0e53-4a03-854c-a79a44d1e356

Short summary

Tides can affect the flow of ice at hourly to yearly timescales. In some cases the ice responds at a different frequency than is found in the tidal forcing; for example, on Rutford Ice Stream the strongest response is at a fortnightly period. A new compilation of GPS data across the Ronne Ice Shelf and adjoining ice streams shows that this fortnightly modulation in ice flow is found across the entire region. Measurements of this kind can provide insights into ice rheology and basal processes.