A preliminary tidal analysis of ICESat laser altimetry: Southern Ross Ice Shelf

Ice shelf structure derived from dispersion curve analysis of ambient seismic noise, Ross Ice Shelf, Antarctica

A. Diez,1 P.D. Bromirski,1 P. Gerstoft,1 R.A. Stephen,2 R.E. Anthony,3 R.C. Aster,3 C. Cai,4 A. Nyblade5 and D.A. Wiens4 1Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0209, USA. E-mail: [email protected] 2Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA 3Department of Geosciences, Warner College of Natural Resources, Colorado State Uni...

Mass loss of Greenland’s glaciers and ice caps 2003–2008 revealed from ICESat laser altimetry data

Tides of the Ross Sea and Ross Ice Shelf cavity

Two new ocean tide models for the Ross Sea including the ocean cavity under the Ross Ice Shelf, are described. The optimum model for predicting ice shelf surface height variability is based on assimilation of gravimetry-derived tidal constituents from the Ross Ice Shelf. Synthetic aperture radar interferograms provide an independent test of model performance. The standard deviation of tide heig...

Antarctic Ice Shelf Tide Modeling Using PALSAR Interferometry

The knowledge of ocean tides underneath permanently or seasonally sea ice covered ocean and ice shelves over Antarctica, is largely unknown. Significant amount of West Antarctic ice sheet melt is through the mechanism of basal melting and due to turbulent tidal mixing. Knowledge of the ice shelf grounding lines and their extent, are critical to accurately quantify ice sheet mass balance, and oc...

Tidal modulation of ice shelf buttressing stresses

Ocean tides influence the flow of marine-terminating glaciers. Observations indicate that the large fortnightly variations in ice flow at Rutford Ice Stream in West Antarctica originate in the floating ice shelf. We show that nonlinear variations in ice shelf buttressing driven by tides can produce such fortnightly variations in ice flow. These nonlinearities in the tidal modulation of buttress...