Overview

WAVI.jl is a software package for the numerical solution of the hybrid equations describing the evolution of ice sheet thickness $h$ and velocity $\mathbf{u} = (u,v)$. Hybrid models assume that ice sheet stresses are depth independent, but vertical velocity gradients are included in the non-linear viscosity and treatment of basal stress. This means that unlike models that make the shallow-ice or shallow-shelf approximations, they are appropriate to describe both regions of fast and slow ice flow, while being computationally two-dimensional and thus far less expensive than full Stokes models. An excellent introduction to the heirarchy of different types of ice sheet model, and the physical processes they capture, can be found on the Antarctic Glaciers website.