Hydroelastic analysis of ice shelves under long wave excitation

Melting and freezing under Antarctic ice shelves from a combination of ice-sheet modelling and observations

Hydroelastic wave diffraction by a vertical cylinder.

A linear three-dimensional problem of hydroelastic wave diffraction by a bottom-mounted circular cylinder is analysed. The fluid is of finite depth and is covered by an ice sheet, which is clamped to the cylinder surface. The ice stretches from the cylinder to infinity in all lateral directions. The hydroelastic behaviour of the ice sheet is described by linear elastic plate theory, and the flu...

Transoceanic infragravity waves impacting Antarctic ice shelves

[1] Long-period oceanic infragravity (IG) waves (ca. [250, 50] s period) are generated along continental coastlines by nonlinear wave interactions of storm-forced shoreward propagating swell. Seismic observations on the Ross Ice Shelf show that free IG waves generated along the Pacific coast of North America propagate transoceanically to Antarctica, where they induce a much higher amplitude she...

Large-Scale Oceanographic Constraints on the Distribution of Melting and Freezing under Ice Shelves

Previous studies suggest that ice shelves experience asymmetric melting and freezing. Topography may constrain oceanic circulation (and thus basal melt–freeze patterns) through its influence on the potential vorticity (PV) field. However, melting and freezing induce a local circulation that may modify locations of heat transport to the ice shelf. This paper investigates the influence of buoyanc...

A Dynamic Memory of Fracture Processes in Ice Shelves

Future sea-level rise has the potential to affect a large fractions of the world’s urbanized areas and many generations to come. In order to design suitable mitigation and adaptation measures, accurate sea-level projections are required. Ice dynamics within the Antarctic Ice Sheet constitutes the major uncertainty in state-of-the-art model approaches. Floating ice shelves around the Antarctic c...