Skip to main content Accessibility help
×
Home

A new tide model for the Antarctic ice shelves and seas

  • Laurie Padman (a1), Helen A. Fricker (a2), Richard Coleman (a3) (a4), Susan Howard (a1) and Lana Erofeeva (a5)...

Abstract

We describe a new tide model for the seas surrounding Antarctica, including the ocean cavities under the floating ice shelves. The model uses data assimilation to improve its fit to available data. Typical peak-to-peak tide ranges on ice shelves are 1–2 m but can exceed 3 m for the Filchner–Ronne and Larsen Ice Shelves in the Weddell Sea. Spring tidal ranges are about twice these values. Model performance is judged relative to the ~5–10 cm accuracy that is needed to fully utilize ice-shelf height data that will be collected with the Geoscience Laser Altimeter System, scheduled to be launched on the Ice, Cloud and land Elevation Satellite in late 2002. The model does not yet achieve this level of accuracy except very near the few high-quality tidal records that have been assimilated into the model. Some improvement in predictive skill is expected from increased sophistication of model physics, but we also require better definition of ice-shelf grounding lines and more accurate water-column thickness data in shelf seas and under the ice shelves. Long-duration tide measurements (bottom pressure gauge or global positioning system) in critical data-sparse areas, particularly near and on the Filchner–Ronne and Ross Ice Shelves and Pine Island Bay, are required to improve the performance of the data-assimilation model.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      A new tide model for the Antarctic ice shelves and seas
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      A new tide model for the Antarctic ice shelves and seas
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      A new tide model for the Antarctic ice shelves and seas
      Available formats
      ×

Copyright

References

Hide All
Brancolini, G. and 12 others. 1995. Descriptive text for the seismic stratigraphic atlas of the Ross Sea, Antarctica. In Cooper, A. K., Barker, P.F. and Brancolini, G., eds. Geology and seismic stratigraphyof the Antarctic margin1. Washington, DC, American Geophysical Union, 271–286. (Antarctic Research Series 68.)
Doake, C.S.M. 1992. Gravimetric tidal measurement on Filchner Ronne Ice Shelf. In Oerter, H., ed. Filchner–Ronne Ice Shelf Programme. Report No. 6 (1992). Bremerhaven, Alfred Wegener Institute for Polar and Marine Research, 34–39.
Egbert, G.D. 1997. Tidal data inversion: interpolation and inference. Progress in Oceanography, 40, 53–80.
Egbert, G.D. and Bennett, A.F.. 1996. Data assimilation methods for ocean tides. In Malonette-Rizzoli, P., ed. Modern approaches to data assimilation in ocean modeling. Amsterdam, Elsevier, 147–179.
Egbert, G.D., Bennett, A.F. and Foreman, M.G.G.. 1994. TOPEX/POSEIDON tides estimated using a global inverse model. J. Geophys. Res., 99(C12), 24, 821–24, 852.
Fricker, H.A. and 8 others. In press. Redefinition of the grounding zone of Amery Ice Shelf, East Antarctica. J. Geophys. Res.
Gill, A.E. 1982. Atmosphere–ocean dynamics. San Diego, Academic Press. (International Geophysics Series 30.)
Gray, L. and 6 others. 2002. RADARSAT interferometry for Antarctic grounding-zone mapping. Ann. Glaciol., 34 (see paper in this volume).
Greischar, L. and Bentley, C.R.. 1980. Isostatic equilibrium grounding line between the West Antarctic ice sheet and the Ross Ice Shelf. Nature, 283(5748), 651–654.
Jacobs, S.S., Hellmer, H.H., Doake, C.S.M., A. Jenkins and R. M. Frolich. 1992. Melting of ice shelves and the mass balance of Antarctica. J.Glaciol., 38(130), 375–387.
Jayne, S.R. and Laurent, L.C.St.. 2001. Parameterizing tidal dissipation over rough topography. Geophys. Res. Lett., 28(5), 811–814.
Johnson, M.R. and Smith, A.M.. 1997. Seabed topography under the southern and western Ronne Ice Shelf, derived from seismic surveys. Antarct. Sci., 9(2), 201–208.
King, M., Nguyen, L., Coleman, R. and Morgan, P.J.. 2000. Strategies for high precision processing of GPS measurements with application to the Amery Ice Shelf, East Antarctica. GPS Solutions, 4(1), 2–12.
le Provost, C., Lyard, F., Molines, J.M., Genco, M.L. and Rabilloud, F.. 1997. A hydrodynamic oceantide model improved by assimilating a satellite altimeter derived dataset. J. Geophys. Res., 103(C3), 5513–5529.
MacAyeal, D.R. 1984. Numerical simulations of the Ross Sea tides. J.Geophys. Res., 89(C1), 607–615.
Makinson, K. and Nicholls, K.W.. 1999. Modeling tidal currents beneath Filchner–Ronne Ice Shelf and on the adjacent continental shelf: their effect on mixing and transport. J. Geophys. Res., 104(C6), 13, 449–13, 465.
Maslanyj, M.P. 1987. Seismic bedrock depth measurements and the origin of George VI Sound, Antarctic Peninsula. Br. Antarct. Surv. Bull. 75, 51–65.
National Oceanic and Atmospheric Administration (NOAA).1988. ETOPO-5 bathymetry/topography data. Digital relief of the surface of the Earth. Boulder, CO, U.S. Department of Commerce. National Oceanic and Atmospheric Administration. National Geophysical Data Center. (Data Announcement 88-MGG-02.)
National Oceanic and Atmospheric Administration (NOAA).1992.GEODAS CD-ROM worldwide marine geophysical data. Boulder, CO, U.S. Department of Commerce. National Oceanic and Atmospheric Administration. National Geophysical Data Center. (Data Announcement 9288-MGG-02.)
Nicholls, K.W., L., Padman and Jenkins, A.. 1998. First physical oceanography results from the ROPEX98cruise to the southern Weddell Sea. In Oerter, H., comp. Filchner–Ronne Ice Shelf Programme (FRISP). Report No. 12 (1998). Bremer-haven, Alfred Wegener Institute for Polar and Marine Research, 51–58.
Padman, L. and Kottmeier, Ch.. 2000. High-frequency ice motion and divergence in the Weddell Sea. J. Geophys. Res., 105(19), 3379–3400.
Parke, M.E., Stewart, R.H., Farless, D.L. and Cartwright, D.E.. 1987. On the choice of orbits for an altimetric satellite to study ocean circulation and tides. J. Geophys. Res., 92(C11), 11, 693–11, 707.
Riedel, B., Nixdorf, U., Heinert, M., Eckstaller, A. and Mayer, C.. 1999. The response of the Ekströmisen (Antarctica) grounding zone to tidal forcing. Ann. Glaciol., 29, 239–242.
Rignot, E.J. 1998. Fast recession of a West Antarctic glacier. Science, 281(5376), 549–551.
Rignot, E., Padman, L., MacAyeal, D.R. and Schmeltz, M.. 2000. Observation of oceantides below the Filchner and Ronne Ice Shelves, Antarctica, using synthetic aperture radar interferometry: comparison with tide model predictions. J. Geophys. Res., 105(C8), 19, 615–19, 630.
Robertson, R., Padman, L. and Egbert, G.D.. 1998. Tides in the Weddell Sea. In Jacobs, S.S. and Weiss, R.F., eds. Ocean, ice and atmosphere: interactions at the Antarctic continental margin. Washington, DC, American Geophysical Union, 341–369. (Antarctic Research Series 75.)
Robinson, A.V., Doake, C.S.M., Nicholls, K.W., Makinson, K. and Vaughan, D.G.. 1996. ESAMCA tidal correction report. Cambridge, British Antarctic Survey.
Scientific Committee on Antarctic Research (SCAR).1993. Antarctic digital database. A topographic database for use with PC ARC/INFO, ArcView and ArcCAD.CD-ROM version 1.0, September 1993 edition. Cambridge, Scott Polar Research Institute, British Antarctic Survey and the World Conservation Monitoring Centre.
Smith, A.J.E. 1999. Application of satellite altimetry to global ocean tidal modeling. (Ph.D. thesis, Delft University of Technology. Delft Institute for Earth-Oriented Space Research.)
Smith, A.J.E., Ambrosius, B.A.C. and Wakker, K.F.. 2000. Ocean tides from T/P, ERS-1, and GEOSAT altimetry. J. Geod., 74(5), 399–413.
Smith, A.M. 1991. The use of tiltmeters to study the dynamics of Antarctic ice-shelf grounding lines. J. Glaciol., 37(125), 51–58.
Smith, W.H.F. and Sandwell, D.T.. 1997. Global sea floor topography from satellite altimetry and ship depth soundings. Science, 277(5334), 1956–1962.
Smithson, M.J. 1992. Pelagic tidal constants 3. Del Mar, CA, International Union of Geodesy and Geophysics, International Association for the Physical Sciences of the Oceans. (IAPSOPublication Scientifique 35.)
Smithson, M.J., Robinson, A.V. and Flather, R.A.. 1996. Ocean tides under the Filchner–Ronne Ice Shelf, Antarctica. Ann. Glaciol., 23, 217–225.
Williams, M.J.M., Warner, R.C. and Budd, W.F.. 1998. The effects of ocean warming on melting and ocean circulation under the Amery Ice Shelf, East Antarctica. Ann. Glaciol., 27, 75–80.
Williams, R.T. and Robinson, E.S.. 1980. The ocean tide in the southern Ross Sea. J. Geophys. Res., 85(C11), 6689–6696.
Wingham, D.J., Ridout, A.L., Scharroo, R., Arthern, R.J. and Shum, C.K.. 1998. Antarctic elevationchange 1992 to 1996. Science, 282(5388), 456–458.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed