Articles | Volume 14, issue 7
https://doi.org/10.5194/tc-14-2449-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-14-2449-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Jul 2020
Research article |
| 27 Jul 2020
| 27 Jul 2020
Using a composite flow law to model deformation in the NEEM deep ice core, Greenland – Part 2: The role of grain size and premelting on ice deformation at high homologous temperature
Ernst-Jan N. Kuiper
Faculty of Earth Science, Utrecht University, 3508 TA Utrecht, the
Netherlands
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, 27570 Bremerhaven, Germany
Johannes H. P. de Bresser
Faculty of Earth Science, Utrecht University, 3508 TA Utrecht, the
Netherlands
Faculty of Earth Science, Utrecht University, 3508 TA Utrecht, the
Netherlands
Jan Eichler
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, 27570 Bremerhaven, Germany
Department of Geosciences, Eberhard Karls University
Tübingen, 72074 Tübingen, Germany
Gill M. Pennock
Faculty of Earth Science, Utrecht University, 3508 TA Utrecht, the
Netherlands
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine
Research, 27570 Bremerhaven, Germany
Faculty of Earth Science, Utrecht University, 3508 TA Utrecht, the
Netherlands
Department of Geosciences, Eberhard Karls University
Tübingen, 72074 Tübingen, Germany
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Cited
18 citations as recorded by crossref.
- Microstructure, micro-inclusions, and mineralogy along the EGRIP ice core – Part 1: Localisation of inclusions and deformation patterns N. Stoll et al. 10.5194/tc-15-5717-2021
- Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream T. Gerber et al. 10.1038/s41467-023-38139-8
- Microstructure and Crystallographic Preferred Orientations of an Azimuthally Oriented Ice Core from a Lateral Shear Margin: Priestley Glacier, Antarctica R. Thomas et al. 10.3389/feart.2021.702213
- Crystallographic Preferred Orientation (CPO) Development Governs Strain Weakening in Ice: Insights From High‐Temperature Deformation Experiments S. Fan et al. 10.1029/2021JB023173
- Recrystallization of ice enhances the creep and vulnerability to fracture of ice shelves M. Ranganathan et al. 10.1016/j.epsl.2021.117219
- Structure of the electrical double layer at the ice–water interface H. Daigle 10.1063/5.0048817
- Using a composite flow law to model deformation in the NEEM deep ice core, Greenland – Part 1: The role of grain size and grain size distribution on deformation of the upper 2207 m E. Kuiper et al. 10.5194/tc-14-2429-2020
- Transition dynamics and metastable states during premelting and freezing of ice surfaces S. Cui & H. Chen 10.1103/PhysRevB.108.045413
- Analysis of ice-sheet temperature profiles from low-frequency airborne remote sensing K. Jezek et al. 10.1017/jog.2022.19
- A Review of the Microstructural Location of Impurities in Polar Ice and Their Impacts on Deformation N. Stoll et al. 10.3389/feart.2020.615613
- Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing R. Law et al. 10.1126/sciadv.abe7136
- Temperature and strain controls on ice deformation mechanisms: insights from the microstructures of samples deformed to progressively higher strains at −10, −20 and −30 °C S. Fan et al. 10.5194/tc-14-3875-2020
- Stress sensitivity of high-temperature microstructures in ice, with potential applications to quartz J. Platt et al. 10.1016/j.jsg.2021.104487
- Electron microscope loading and in situ nanoindentation of water ice at cryogenic temperatures R. Dubosq et al. 10.1371/journal.pone.0281703
- Multimaxima crystallographic fabrics (CPO) in warm, coarse-grained ice: New insights M. Disbrow-Monz et al. 10.1016/j.jsg.2024.105107
- Crystallographic analysis of temperate ice on Rhonegletscher, Swiss Alps S. Hellmann et al. 10.5194/tc-15-677-2021
- Effect of an orientation-dependent non-linear grain fluidity on bulk directional enhancement factors N. Rathmann et al. 10.1017/jog.2020.117
- Firn on ice sheets C. Amory et al. 10.1038/s43017-023-00507-9
18 citations as recorded by crossref.
- Microstructure, micro-inclusions, and mineralogy along the EGRIP ice core – Part 1: Localisation of inclusions and deformation patterns N. Stoll et al. 10.5194/tc-15-5717-2021
- Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream T. Gerber et al. 10.1038/s41467-023-38139-8
- Microstructure and Crystallographic Preferred Orientations of an Azimuthally Oriented Ice Core from a Lateral Shear Margin: Priestley Glacier, Antarctica R. Thomas et al. 10.3389/feart.2021.702213
- Crystallographic Preferred Orientation (CPO) Development Governs Strain Weakening in Ice: Insights From High‐Temperature Deformation Experiments S. Fan et al. 10.1029/2021JB023173
- Recrystallization of ice enhances the creep and vulnerability to fracture of ice shelves M. Ranganathan et al. 10.1016/j.epsl.2021.117219
- Structure of the electrical double layer at the ice–water interface H. Daigle 10.1063/5.0048817
- Using a composite flow law to model deformation in the NEEM deep ice core, Greenland – Part 1: The role of grain size and grain size distribution on deformation of the upper 2207 m E. Kuiper et al. 10.5194/tc-14-2429-2020
- Transition dynamics and metastable states during premelting and freezing of ice surfaces S. Cui & H. Chen 10.1103/PhysRevB.108.045413
- Analysis of ice-sheet temperature profiles from low-frequency airborne remote sensing K. Jezek et al. 10.1017/jog.2022.19
- A Review of the Microstructural Location of Impurities in Polar Ice and Their Impacts on Deformation N. Stoll et al. 10.3389/feart.2020.615613
- Thermodynamics of a fast-moving Greenlandic outlet glacier revealed by fiber-optic distributed temperature sensing R. Law et al. 10.1126/sciadv.abe7136
- Temperature and strain controls on ice deformation mechanisms: insights from the microstructures of samples deformed to progressively higher strains at −10, −20 and −30 °C S. Fan et al. 10.5194/tc-14-3875-2020
- Stress sensitivity of high-temperature microstructures in ice, with potential applications to quartz J. Platt et al. 10.1016/j.jsg.2021.104487
- Electron microscope loading and in situ nanoindentation of water ice at cryogenic temperatures R. Dubosq et al. 10.1371/journal.pone.0281703
- Multimaxima crystallographic fabrics (CPO) in warm, coarse-grained ice: New insights M. Disbrow-Monz et al. 10.1016/j.jsg.2024.105107
- Crystallographic analysis of temperate ice on Rhonegletscher, Swiss Alps S. Hellmann et al. 10.5194/tc-15-677-2021
- Effect of an orientation-dependent non-linear grain fluidity on bulk directional enhancement factors N. Rathmann et al. 10.1017/jog.2020.117
- Firn on ice sheets C. Amory et al. 10.1038/s43017-023-00507-9
Latest update: 25 Apr 2024
Short summary
Fast ice flow occurs in deeper parts of polar ice sheets, driven by high stress and high temperatures. Above 262 K ice flow is further enhanced, probably by the formation of thin melt layers between ice crystals. A model applying an experimentally derived composite flow law, using temperature and grain size values from the deepest 540 m of the NEEM ice core, predicts that flow in fine-grained layers is enhanced by a factor of 10 compared to coarse-grained layers in the Greenland ice sheet.
Fast ice flow occurs in deeper parts of polar ice sheets, driven by high stress and high...
