Exploring basal sliding with a fluidity‐based, ice‐sheet model using FOSLS

• Published in: Numerical Linear Algebra with Applications
• Main Authors: Allen, Jeffery, Manteuffel, Tom, Rajaram, Harihar
• Other Authors: U.S. Department of Energy, Lawrence Livermore National Laboratory
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2018
• Subjects: Curl; Ice Sheet
• Online Access: http://dx.doi.org/10.1002/nla.2161; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fnla.2161; https://onlinelibrary.wiley.com/doi/pdf/10.1002/nla.2161; https://onlinelibrary.wiley.com/doi/full-xml/10.1002/nla.2161; https://onlinelibrary.wiley.com/doi/am-pdf/10.1002/nla.2161

Summary This paper develops two first‐order system—in this context, first‐order refers to the order of the PDE not to the model—least‐squares, fluidity‐based formulations of a nonlinear Stokes flow model for ice sheets that attempt to overcome the difficulties introduced by unbounded viscosity. One...