What's Cooler Than Being Cool? Ice-Sheet Models Using a Fluidity-Based FOSLS Approach to Nonlinear-Stokes Flow.

• Main Author: Allen, Jeffery M.
• Format: Text
• Language: unknown
• Published: CU Scholar 2017
• Subjects: fluid flow; fosls; glaciers; ice sheets; multigrid; nonlinear stokes equations; Mathematics; Non-linear Dynamics; Curl; Ice Sheet
• Online Access: https://scholar.colorado.edu/appm_gradetds/125; https://scholar.colorado.edu/cgi/viewcontent.cgi?article=1135&context=appm_gradetds

This research involves a few First-Order System Least Squares (FOSLS) formulations of a nonlinear-Stokes flow model for ice sheets. In Glen's flow law, a commonly used constitutive equation for ice rheology, the viscosity becomes infinite as the velocity gradients approach zero. This typically...