Articles | Volume 9, issue 6
https://doi.org/10.5194/tc-9-2183-2015
© Author(s) 2015. 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-9-2183-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
20 Nov 2015
Research article |
| 20 Nov 2015
A new methodology to simulate subglacial deformation of water-saturated granular material
A. Damsgaard
CORRESPONDING AUTHOR
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
D. L. Egholm
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
J. A. Piotrowski
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
S. Tulaczyk
Department of Earth and Planetary Sciences, University of California, Santa Cruz, California 95064, USA
N. K. Larsen
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, 1350 Copenhagen K, Denmark
C. F. Brædstrup
Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark
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Cited
21 citations as recorded by crossref.
- Subglacial processes at the fringe of the last Scandinavian Ice Sheet in central Poland derived from macro‐ and micro‐sedimentological proxies P. Hermanowski & J. Piotrowski 10.1111/bor.12698
- Assimilation of surface velocities acquired between 1996 and 2010 to constrain the form of the basal friction law under Pine Island Glacier F. Gillet‐Chaulet et al. 10.1002/2016GL069937
- Brief communication: The Khurdopin glacier surge revisited – extreme flow velocities and formation of a dammed lake in 2017 J. Steiner et al. 10.5194/tc-12-95-2018
- The Influence of Hydrology on the Dynamics of Land-Terminating Sectors of the Greenland Ice Sheet B. Davison et al. 10.3389/feart.2019.00010
- Geospatially analysing the dynamics of the Khurdopin Glacier surge using multispectral and temporal remote sensing and ground observations M. Imran & U. Ahmad 10.1007/s11069-021-04708-7
- Microscale evidence of liquefaction and its potential triggers during soft-bed deformation within subglacial traction tills E. Phillips et al. 10.1016/j.quascirev.2017.12.003
- Modelling of till microstructure development during subglacial deformation using ring shear experiments E. Phillips & J. Piotrowski 10.1016/j.quascirev.2023.108168
- Reconstructing the flow pattern evolution in inner region of the Fennoscandian Ice Sheet by glacial landforms from Gausdal Vestfjell area, south-central Norway A. Putniņš & M. Henriksen 10.1016/j.quascirev.2017.03.008
- Dilation of subglacial sediment governs incipient surge motion in glaciers with deformable beds B. Minchew & C. Meyer 10.1098/rspa.2020.0033
- Uncovering Basal Friction in Northwest Greenland Using an Ice Flow Model and Observations of the Past Decade Y. Choi et al. 10.1029/2022JF006710
- Water pressure fluctuations control variability in sediment flux and slip dynamics beneath glaciers and ice streams A. Damsgaard et al. 10.1038/s43247-020-00074-7
- Sediment behavior controls equilibrium width of subglacial channels A. DAMSGAARD et al. 10.1017/jog.2017.71
- Shear Variation at the Ice‐Till Interface Changes the Spatial Distribution of Till Porosity and Meltwater Drainage I. Kasmalkar et al. 10.1029/2021JF006460
- Contemporary ice sheet thinning drives subglacial groundwater exfiltration with potential feedbacks on glacier flow A. Robel et al. 10.1126/sciadv.adh3693
- Groundwater Flow Under a Paleo‐Ice Stream of the Scandinavian Ice Sheet and Its Implications for the Formation of Stargard Drumlin Field, NW Poland P. Hermanowski & J. Piotrowski 10.1029/2018JF004939
- Ice flow dynamics forced by water pressure variations in subglacial granular beds A. Damsgaard et al. 10.1002/2016GL071579
- Till kinematics in the Stargard drumlin field, NW Poland constrained by microstructural proxies P. Hermanowski et al. 10.1002/jqs.3233
- Coupling of multiscale lattice Boltzmann discrete-element method for reactive particle fluid flows M. Maier et al. 10.1103/PhysRevE.103.033306
- Characteristics of the deforming bed: till properties on the deglaciated Antarctic continental shelf A. HALBERSTADT et al. 10.1017/jog.2018.92
- A case study in the New York Drumlin Field, an investigation using microsedimentology, resulting in the refinement of a theory of drumlin formation J. Menzies et al. 10.1016/j.sedgeo.2016.01.017
- Microsedimentology of ice stream tills from the Eastern Alps, Austria – a new perspective on till microstructures J. Menzies & J. Reitner 10.1111/bor.12189
19 citations as recorded by crossref.
- Subglacial processes at the fringe of the last Scandinavian Ice Sheet in central Poland derived from macro‐ and micro‐sedimentological proxies P. Hermanowski & J. Piotrowski 10.1111/bor.12698
- Assimilation of surface velocities acquired between 1996 and 2010 to constrain the form of the basal friction law under Pine Island Glacier F. Gillet‐Chaulet et al. 10.1002/2016GL069937
- Brief communication: The Khurdopin glacier surge revisited – extreme flow velocities and formation of a dammed lake in 2017 J. Steiner et al. 10.5194/tc-12-95-2018
- The Influence of Hydrology on the Dynamics of Land-Terminating Sectors of the Greenland Ice Sheet B. Davison et al. 10.3389/feart.2019.00010
- Geospatially analysing the dynamics of the Khurdopin Glacier surge using multispectral and temporal remote sensing and ground observations M. Imran & U. Ahmad 10.1007/s11069-021-04708-7
- Microscale evidence of liquefaction and its potential triggers during soft-bed deformation within subglacial traction tills E. Phillips et al. 10.1016/j.quascirev.2017.12.003
- Modelling of till microstructure development during subglacial deformation using ring shear experiments E. Phillips & J. Piotrowski 10.1016/j.quascirev.2023.108168
- Reconstructing the flow pattern evolution in inner region of the Fennoscandian Ice Sheet by glacial landforms from Gausdal Vestfjell area, south-central Norway A. Putniņš & M. Henriksen 10.1016/j.quascirev.2017.03.008
- Dilation of subglacial sediment governs incipient surge motion in glaciers with deformable beds B. Minchew & C. Meyer 10.1098/rspa.2020.0033
- Uncovering Basal Friction in Northwest Greenland Using an Ice Flow Model and Observations of the Past Decade Y. Choi et al. 10.1029/2022JF006710
- Water pressure fluctuations control variability in sediment flux and slip dynamics beneath glaciers and ice streams A. Damsgaard et al. 10.1038/s43247-020-00074-7
- Sediment behavior controls equilibrium width of subglacial channels A. DAMSGAARD et al. 10.1017/jog.2017.71
- Shear Variation at the Ice‐Till Interface Changes the Spatial Distribution of Till Porosity and Meltwater Drainage I. Kasmalkar et al. 10.1029/2021JF006460
- Contemporary ice sheet thinning drives subglacial groundwater exfiltration with potential feedbacks on glacier flow A. Robel et al. 10.1126/sciadv.adh3693
- Groundwater Flow Under a Paleo‐Ice Stream of the Scandinavian Ice Sheet and Its Implications for the Formation of Stargard Drumlin Field, NW Poland P. Hermanowski & J. Piotrowski 10.1029/2018JF004939
- Ice flow dynamics forced by water pressure variations in subglacial granular beds A. Damsgaard et al. 10.1002/2016GL071579
- Till kinematics in the Stargard drumlin field, NW Poland constrained by microstructural proxies P. Hermanowski et al. 10.1002/jqs.3233
- Coupling of multiscale lattice Boltzmann discrete-element method for reactive particle fluid flows M. Maier et al. 10.1103/PhysRevE.103.033306
- Characteristics of the deforming bed: till properties on the deglaciated Antarctic continental shelf A. HALBERSTADT et al. 10.1017/jog.2018.92
2 citations as recorded by crossref.
- A case study in the New York Drumlin Field, an investigation using microsedimentology, resulting in the refinement of a theory of drumlin formation J. Menzies et al. 10.1016/j.sedgeo.2016.01.017
- Microsedimentology of ice stream tills from the Eastern Alps, Austria – a new perspective on till microstructures J. Menzies & J. Reitner 10.1111/bor.12189
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Short summary
This paper details a new algorithm for performing computational experiments of subglacial granular deformation. The numerical approach allows detailed studies of internal sediment and pore-water dynamics under shear. Feedbacks between sediment grains and pore water can cause rate-dependent strengthening, which additionally contributes to the plastic shear strength of the granular material. Hardening can stabilise patches of the subglacial beds with implications for landform development.
This paper details a new algorithm for performing computational experiments of subglacial...
