41 citations · 112 across the 6 of their papers we have counts for
6 papers
Basal hydrofractures near sticky patches
Hanwen Zhang, Timothy Davis, Richard F. Katz +2
Basal crevasses are macroscopic structural discontinuities at the base of ice sheets and glaciers. Motivated by observations and the mechanics of elastic fracture, we hypothesise t…
Compositional layering in Io driven by magmatic segregation and volcanism
Dan C. Spencer, Richard F. Katz, Ian J. Hewitt +2
Magmatic segregation and volcanic eruptions transport tidal heat from Io's interior to its surface. Several observed eruptions appear to be extremely high temperature ( 1600…
Devolatilization of Subducting Slabs, Part II: Volatile Fluxes and Storage
Meng Tian, Richard Katz, David Rees Jones +1
Subduction is a crucial part of the long-term water and carbon cycling between Earth's exosphere and interior. However, there is broad disagreement over how much water and carbon i…
Extreme-scale Multigrid Components within PETSc
Dave A. May, Patrick Sanan, Karl Rupp +2
Elliptic partial differential equations (PDEs) frequently arise in continuum descriptions of physical processes relevant to science and engineering. Multilevel preconditioners repr…
Pipelined, Flexible Krylov Subspace Methods
Patrick Sanan, Sascha M. Schnepp, Dave. A. May
We present variants of the Conjugate Gradient (CG), Conjugate Residual (CR), and Generalized Minimal Residual (GMRES) methods which are both pipelined and flexible. These allow com…
Optimal, scalable forward models for computing gravity anomalies
Dave A. May, Matthew G. Knepley
We describe three approaches for computing a gravity signal from a density anomaly. The first approach consists of the classical "summation" technique, whilst the remaining two met…