Articles | Volume 11, issue 3
https://doi.org/10.5194/tc-11-1247-2017
© Author(s) 2017. 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-11-1247-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
24 May 2017
Research article |
| 24 May 2017
Self-affine subglacial roughness: consequences for radar scattering and basal water discrimination in northern Greenland
Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, UK
Michael A. Cooper
Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, UK
Dustin M. Schroeder
Department of Geophysics, Stanford University, Stanford, California, USA
Christopher N. Williams
Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, UK
John D. Paden
Center for Remote Sensing of Ice Sheets, University of Kansas, Lawrence, Kansas, USA
Martin J. Siegert
Grantham Institute and Department of Earth Science and Engineering, Imperial College, London, UK
Jonathan L. Bamber
Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, UK
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- Topographic Correction of Geothermal Heat Flux in Greenland and Antarctica W. Colgan et al. 10.1029/2020JF005598
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- Investigating the Radar Response of Englacial Debris Entrained Basal Ice Units in East Antarctica Using Electromagnetic Forward Modeling S. Franke et al. 10.1109/TGRS.2023.3277874
- Revealing the former bed of Thwaites Glacier using sea-floor bathymetry: implications for warm-water routing and bed controls on ice flow and buttressing K. Hogan et al. 10.5194/tc-14-2883-2020
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- Geophysical constraints on the properties of a subglacial lake in northwest Greenland R. Maguire et al. 10.5194/tc-15-3279-2021
- Surface Expression of Basal and Englacial Features, Properties, and Processes of the Greenland Ice Sheet M. Cooper et al. 10.1029/2018GL080620
- Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations H. Jeofry et al. 10.1038/s41467-018-06679-z
- Geospatial simulations of airborne ice-penetrating radar surveying reveal elevation under-measurement bias for ice-sheet bed topography O. Bartlett et al. 10.1017/aog.2020.35
- Ocean access beneath the southwest tributary of Pine Island Glacier, West Antarctica D. Schroeder et al. 10.1017/aog.2017.45
- Ambiguous stability of glaciers at bed peaks A. Robel et al. 10.1017/jog.2022.31
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1 citations as recorded by crossref.
Latest update: 13 Jul 2025
Short summary
Using radio-echo sounding data from northern Greenland, we demonstrate that subglacial roughness exhibits self-affine (fractal) scaling behaviour. This enables us to assess topographic control upon the bed-echo waveform, and explain the spatial distribution of the degree of scattering (specular and diffuse reflections). Via comparison with a prediction for the basal thermal state (thawed and frozen regions of the bed) we discuss the consequences of our study for basal water discrimination.
Using radio-echo sounding data from northern Greenland, we demonstrate that subglacial roughness...
