Articles | Volume 12, issue 3
https://doi.org/10.5194/tc-12-1047-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/tc-12-1047-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
23 Mar 2018
Research article |
| 23 Mar 2018
Implementing an empirical scalar constitutive relation for ice with flow-induced polycrystalline anisotropy in large-scale ice sheet models
Felicity S. Graham
CORRESPONDING AUTHOR
Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania 7001, Australia
Mathieu Morlighem
Department of Earth System Science, University of California, Irvine, California, USA
Roland C. Warner
Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania 7001, Australia
Adam Treverrow
Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania 7001, Australia
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Cited
16 citations as recorded by crossref.
- Simulating higher-order fabric structure in a coupled, anisotropic ice-flow model: application to Dome C D. Lilien et al. 10.1017/jog.2023.78
- Strongly Depth‐Dependent Ice Fabric in a Fast‐Flowing Antarctic Ice Stream Revealed With Icequake Observations S. Kufner et al. 10.1029/2022JF006853
- Modelling the influence of marine ice on the dynamics of an idealised ice shelf L. Craw et al. 10.1017/jog.2022.66
- Basal control of supraglacial meltwater catchments on the Greenland Ice Sheet J. Crozier et al. 10.5194/tc-12-3383-2018
- Ice fabrics in two-dimensional flows: beyond pure and simple shear D. Richards et al. 10.5194/tc-16-4571-2022
- Bridging the Gap Between Experimental and Natural Fabrics: Modeling Ice Stream Fabric Evolution and its Comparison With Ice‐Core Data D. Richards et al. 10.1029/2023JB027245
- Constraining Ice Shelf Anisotropy Using Shear Wave Splitting Measurements from Active‐Source Borehole Seismics F. Lutz et al. 10.1029/2020JF005707
- Modeling the Deformation Regime of Thwaites Glacier, West Antarctica, Using a Simple Flow Relation for Ice Anisotropy (ESTAR) F. McCormack et al. 10.1029/2021JF006332
- Solution of a Mixed Boundary Value Problem of Nonlinear Creep Theory S. Mkhitaryan 10.3103/S0025654419020109
- Meltwater generation in ice stream shear margins: case study in Antarctic ice streams M. Ranganathan et al. 10.1098/rspa.2022.0473
- Multimaxima crystallographic fabrics (CPO) in warm, coarse-grained ice: New insights M. Disbrow-Monz et al. 10.1016/j.jsg.2024.105107
- Deriving micro- to macro-scale seismic velocities from ice-core <i>c</i> axis orientations J. Kerch et al. 10.5194/tc-12-1715-2018
- Acoustic velocity measurements for detecting the crystal orientation fabrics of a temperate ice core S. Hellmann et al. 10.5194/tc-15-3507-2021
- Greenland Ice Sheet: Higher Nonlinearity of Ice Flow Significantly Reduces Estimated Basal Motion P. Bons et al. 10.1029/2018GL078356
- Radar Characterization of Ice Crystal Orientation Fabric and Anisotropic Viscosity Within an Antarctic Ice Stream T. Jordan et al. 10.1029/2022JF006673
- The temperature change shortcut: effects of mid-experiment temperature changes on the deformation of polycrystalline ice L. Craw et al. 10.5194/tc-15-2235-2021
16 citations as recorded by crossref.
- Simulating higher-order fabric structure in a coupled, anisotropic ice-flow model: application to Dome C D. Lilien et al. 10.1017/jog.2023.78
- Strongly Depth‐Dependent Ice Fabric in a Fast‐Flowing Antarctic Ice Stream Revealed With Icequake Observations S. Kufner et al. 10.1029/2022JF006853
- Modelling the influence of marine ice on the dynamics of an idealised ice shelf L. Craw et al. 10.1017/jog.2022.66
- Basal control of supraglacial meltwater catchments on the Greenland Ice Sheet J. Crozier et al. 10.5194/tc-12-3383-2018
- Ice fabrics in two-dimensional flows: beyond pure and simple shear D. Richards et al. 10.5194/tc-16-4571-2022
- Bridging the Gap Between Experimental and Natural Fabrics: Modeling Ice Stream Fabric Evolution and its Comparison With Ice‐Core Data D. Richards et al. 10.1029/2023JB027245
- Constraining Ice Shelf Anisotropy Using Shear Wave Splitting Measurements from Active‐Source Borehole Seismics F. Lutz et al. 10.1029/2020JF005707
- Modeling the Deformation Regime of Thwaites Glacier, West Antarctica, Using a Simple Flow Relation for Ice Anisotropy (ESTAR) F. McCormack et al. 10.1029/2021JF006332
- Solution of a Mixed Boundary Value Problem of Nonlinear Creep Theory S. Mkhitaryan 10.3103/S0025654419020109
- Meltwater generation in ice stream shear margins: case study in Antarctic ice streams M. Ranganathan et al. 10.1098/rspa.2022.0473
- Multimaxima crystallographic fabrics (CPO) in warm, coarse-grained ice: New insights M. Disbrow-Monz et al. 10.1016/j.jsg.2024.105107
- Deriving micro- to macro-scale seismic velocities from ice-core <i>c</i> axis orientations J. Kerch et al. 10.5194/tc-12-1715-2018
- Acoustic velocity measurements for detecting the crystal orientation fabrics of a temperate ice core S. Hellmann et al. 10.5194/tc-15-3507-2021
- Greenland Ice Sheet: Higher Nonlinearity of Ice Flow Significantly Reduces Estimated Basal Motion P. Bons et al. 10.1029/2018GL078356
- Radar Characterization of Ice Crystal Orientation Fabric and Anisotropic Viscosity Within an Antarctic Ice Stream T. Jordan et al. 10.1029/2022JF006673
- The temperature change shortcut: effects of mid-experiment temperature changes on the deformation of polycrystalline ice L. Craw et al. 10.5194/tc-15-2235-2021
Latest update: 17 Apr 2024
Short summary
Ice sheet flow is anisotropic, depending on the nature of the stress applied. However, most large-scale ice sheet models rely on the Glen flow relation, which ignores anisotropic effects. We implement a flow relation (ESTAR) for anisotropic ice in a large-scale ice sheet model. In ice shelf simulations, the Glen flow relation overestimates velocities by up to 17 % compared with ESTAR. Our results have implications for ice sheet model simulations of paleo-ice extent and sea level rise prediction.
Ice sheet flow is anisotropic, depending on the nature of the stress applied. However, most...
