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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- Doppler-based discrimination of radar sounder target scattering properties: A case study of subsurface water geometry in Europa's ice shell R. Michaelides & D. Schroeder 10.1016/j.icarus.2019.02.037
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- Radar evidence of ponded subglacial water in Greenland G. OSWALD et al. 10.1017/jog.2018.60
- Quantifying bed roughness beneath contemporary and palaeo-ice streams F. FALCINI et al. 10.1017/jog.2018.71
- A constraint upon the basal water distribution and thermal state of the Greenland Ice Sheet from radar bed echoes T. Jordan et al. 10.5194/tc-12-2831-2018
- Topographic Correction of Geothermal Heat Flux in Greenland and Antarctica W. Colgan et al. 10.1029/2020JF005598
- Radiofrequency ice dielectric measurements at Summit Station, Greenland J. Aguilar et al. 10.1017/jog.2023.72
- Fractal Properties of Greenland Isolines S. Rezvanbehbahani et al. 10.1007/s11004-019-09788-7
- 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
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- <italic>In Situ</italic> Demonstration of a Passive Radio Sounding Approach Using the Sun for Echo Detection S. Peters et al. 10.1109/TGRS.2018.2850662
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- HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms E. Arnold et al. 10.3390/geosciences8050182
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- Geothermal Heat Flux Reveals the Iceland Hotspot Track Underneath Greenland Y. Martos et al. 10.1029/2018GL078289
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- Radar-Derived Internal Structure and Basal Roughness Characterization along a Traverse from Zhongshan Station to Dome A, East Antarctica K. Luo et al. 10.3390/rs12071079
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45 citations as recorded by crossref.
- Interpreting englacial layer deformation in the presence of complex ice flow history with synthetic radargrams C. Elsworth et al. 10.1017/aog.2019.41
- Basal roughness of the East Antarctic Ice Sheet in relation to flow speed and basal thermal state O. Eisen et al. 10.1017/aog.2020.47
- GBaTSv2: a revised synthesis of the likely basal thermal state of the Greenland Ice Sheet J. MacGregor et al. 10.5194/tc-16-3033-2022
- Noise Removal and Feature Extraction in Airborne Radar Sounding Data of Ice Sheets X. Tang et al. 10.3390/rs14020399
- A self-adaptive two-parameter method for characterizing roughness of multi-scale subglacial topography S. Lang et al. 10.1017/jog.2021.12
- Doppler-based discrimination of radar sounder target scattering properties: A case study of subsurface water geometry in Europa's ice shell R. Michaelides & D. Schroeder 10.1016/j.icarus.2019.02.037
- A Radiometrically Precise Multi-Frequency Ice-Penetrating Radar Architecture A. Broome & D. Schroeder 10.1109/TGRS.2021.3099801
- Five decades of radioglaciology D. Schroeder et al. 10.1017/aog.2020.11
- Radar evidence of ponded subglacial water in Greenland G. OSWALD et al. 10.1017/jog.2018.60
- Quantifying bed roughness beneath contemporary and palaeo-ice streams F. FALCINI et al. 10.1017/jog.2018.71
- A constraint upon the basal water distribution and thermal state of the Greenland Ice Sheet from radar bed echoes T. Jordan et al. 10.5194/tc-12-2831-2018
- Topographic Correction of Geothermal Heat Flux in Greenland and Antarctica W. Colgan et al. 10.1029/2020JF005598
- Radiofrequency ice dielectric measurements at Summit Station, Greenland J. Aguilar et al. 10.1017/jog.2023.72
- Fractal Properties of Greenland Isolines S. Rezvanbehbahani et al. 10.1007/s11004-019-09788-7
- 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
- Antarctic Topographic Realizations and Geostatistical Modeling Used to Map Subglacial Lakes E. MacKie et al. 10.1029/2019JF005420
- Multisystem Synthesis of Radar Sounding Observations of the Amundsen Sea Sector From the 2004–2005 Field Season W. Chu et al. 10.1029/2021JF006296
- Subglacial roughness of the Greenland Ice Sheet: relationship with contemporary ice velocity and geology M. Cooper et al. 10.5194/tc-13-3093-2019
- 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
- An Automatic Method for Subglacial Lake Detection in Ice Sheet Radar Sounder Data A. Ilisei et al. 10.1109/TGRS.2018.2882911
- Radar sounding survey over Devon Ice Cap indicates the potential for a diverse hypersaline subglacial hydrological environment A. Rutishauser et al. 10.5194/tc-16-379-2022
- 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
- <italic>In Situ</italic> Demonstration of a Passive Radio Sounding Approach Using the Sun for Echo Detection S. Peters et al. 10.1109/TGRS.2018.2850662
- Understanding of Contemporary Regional Sea‐Level Change and the Implications for the Future B. Hamlington et al. 10.1029/2019RG000672
- The Scientific Legacy of NASA’s Operation IceBridge J. MacGregor et al. 10.1029/2020RG000712
- A probabilistic framework for quantifying the role of anthropogenic climate change in marine-terminating glacier retreats J. Christian et al. 10.5194/tc-16-2725-2022
- The Impact of Basal Roughness on Inland Thwaites Glacier Sliding A. Hoffman et al. 10.1029/2021GL096564
- Complex Basal Thermal Transition Near the Onset of Petermann Glacier, Greenland W. Chu et al. 10.1029/2017JF004561
- Ambiguous stability of glaciers at bed peaks A. Robel et al. 10.1017/jog.2022.31
- Permanent Scatterers in Repeat-Pass Airborne VHF Radar Sounder for Layer-Velocity Estimation D. Castelletti et al. 10.1109/LGRS.2020.3007514
- Distribution and dynamics of Greenland subglacial lakes J. Bowling et al. 10.1038/s41467-019-10821-w
- Complex Basal Conditions and Their Influence on Ice Flow at the Onset of the Northeast Greenland Ice Stream S. Franke et al. 10.1029/2020JF005689
- Geometric Power Fall-Off in Radar Sounding M. Haynes et al. 10.1109/TGRS.2018.2840511
- Antarctic Sedimentary Basins and Their Influence on Ice‐Sheet Dynamics A. Aitken et al. 10.1029/2021RG000767
- HF/VHF Radar Sounding of Ice from Manned and Unmanned Airborne Platforms E. Arnold et al. 10.3390/geosciences8050182
- Quantifying Basal Roughness and Internal Layer Continuity Index of Ice Sheets by an Integrated Means with Radar Data and Deep Learning X. Tang et al. 10.3390/rs14184507
- In the Quest of a Parametric Relation Between Ice Sheet Model Inferred Weertman's Sliding‐Law Parameter and Airborne Radar‐Derived Basal Reflectivity Underneath Thwaites Glacier, Antarctica I. Das et al. 10.1029/2022GL098910
- Geothermal Heat Flux Reveals the Iceland Hotspot Track Underneath Greenland Y. Martos et al. 10.1029/2018GL078289
- Automatic Detection of Subglacial Water Bodies in the AGAP Region, East Antarctica, Based on Short-Time Fourier Transform T. Hao et al. 10.3390/rs15020363
- Radar-Derived Internal Structure and Basal Roughness Characterization along a Traverse from Zhongshan Station to Dome A, East Antarctica K. Luo et al. 10.3390/rs12071079
- A framework for attenuation method selection evaluated with ice-penetrating radar data at South Pole Lake B. Hills et al. 10.1017/aog.2020.32
1 citations as recorded by crossref.
Latest update: 22 Apr 2024
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...
