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pro vyhledávání: '"Bueler, Ed"'
Autor:
Bueler, Ed
The primary data which determine the evolution of glaciation are the bedrock elevation and the surface mass balance. From this data, which we assume is defined over a fixed land region, the glacier's geometry solves a free boundary problem which bala
Externí odkaz:
http://arxiv.org/abs/2408.06470
Autor:
Bueler, Ed, Farrell, Patrick E.
Publikováno v:
SIAM Journal on Scientific Computing, 2024, Vol. 46, No. 4, pp. A2421--A2444
We present the full approximation scheme constraint decomposition (FASCD) multilevel method for solving variational inequalities (VIs). FASCD is a common extension of both the full approximation scheme (FAS) multigrid technique for nonlinear partial
Externí odkaz:
http://arxiv.org/abs/2308.06888
Autor:
Bueler, Ed
Publikováno v:
Journal of Glaciology, vol. 69, no. 276, pages 930-935, 2022
Numerical ice sheet models compute evolving ice geometry and velocity fields using various stress-balance approximations and boundary conditions. At high spatial resolution, with horizontal mesh/grid resolutions of a few kilometers or smaller, these
Externí odkaz:
http://arxiv.org/abs/2206.14352
Autor:
Bueler, Ed
This note describes the full approximation storage (FAS) multigrid scheme for an easy one-dimensional nonlinear boundary value problem. The problem is discretized by a simple finite element (FE) scheme. We apply both FAS V-cycles and F-cycles, with a
Externí odkaz:
http://arxiv.org/abs/2101.05408
Autor:
Bueler, Ed
Publikováno v:
SIAM Journal on Applied Mathematics 81 (5), 2007-2032, 2021
Time-dependent models of fluid motion in thin layers, subject to signed source terms, represent important sub-problems within climate dynamics. Examples include ice sheets, sea ice, and even shallow oceans and lakes. We address these problems as disc
Externí odkaz:
http://arxiv.org/abs/2007.05625
Autor:
BUELER, ED, FARRELL, PATRICK E.
Publikováno v:
SIAM Journal on Scientific Computing; 2024, Vol. 46 Issue 4, pA2421-A2444, 24p
Autor:
Bueler, Ed, Brown, Jed
Publikováno v:
J. Geophys. Res. 114, F03008, 2009
The shallow shelf approximation is a better ``sliding law'' for ice sheet modeling than those sliding laws in which basal velocity is a function of driving stress. The shallow shelf approximation as formulated by \emph{Schoof} [2006a] is well-suited
Externí odkaz:
http://arxiv.org/abs/0810.3449
Autor:
Bueler, Ed
We construct a solution of a pure conduction problem in ice and bedrock. This solution is suitable for, and is used in this paper for, verifying a numerical scheme for conservation of energy. This exact solution forms one of a suite of verification t
Externí odkaz:
http://arxiv.org/abs/0710.1314
Autor:
Bueler, Ed, Brown, Jed
Publikováno v:
Journal of Glaciology, vol. 53, no. 182, 2007
This three section report can be regarded as an extended appendix to (Bueler, Brown, and Lingle 2006). First we give the detailed construction of an exact solution to a standard continuum model of a cold, shallow, and thermocoupled ice sheet. The con
Externí odkaz:
http://arxiv.org/abs/physics/0610106
Publikováno v:
Annals of Glaciology vol 46, pp 97-105, 2007
This report starts by describing the continuum model used by Lingle & Clark (1985) to approximate the deformation of the earth under changing ice sheet and ocean loads. That source considers a single ice stream, but we apply their underlying model to
Externí odkaz:
http://arxiv.org/abs/physics/0606074