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| Titel |
The roughness of grounded ice sheet beds: Case studies from high resolution radio echo sounding studies in Antarctica |
| VerfasserIn |
Duncan Young, Donald Blankeship, Lucas Beem, Marie Cavitte, Enrica Quartini, Laura Lindzey, Charles Jackson, Jason Roberts, Catherine Ritz, Martin Siegert, Jamin Greenbaum, Bruce Frederick |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250151699
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| Publikation (Nr.) |
 EGU/EGU2017-16451.pdf |
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| Zusammenfassung |
| The roughness of subglacial interfaces (as measured by airborne radar echo sounding) at length scales between profile line spacing and the footprint of the instrument is a key, but complex, signature of glacial and geomorphic processes, material lithology and integrated history at the bed of ice sheets. Subglacial roughness is also intertwined with assessments of ice thickness uncertainty using radar echo sounding, the utility of interpolation methodologies, and a key aspect of subglacial assess strategies. Here we present an assessment of subglacial roughness estimation in both West and East Antarctica, and compare this to exposed subglacial terrains. We will use recent high resolution aerogeophysical surveys to examine what variations in roughness are a fingerprint for, assess the limits of ice thickness uncertainty quantification and compare strategies for roughness assessment and utilization. |
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