Quantifying subglacial soft bed sedimentary processes
Quantifying subglacial soft bed sedimentary processes
An understanding of subglacial processes are a vital component of ice-sheet models for sea level rise prediction as the use of different sliding laws can result in very different outcomes. In particular, the West Antarctic ice streams, are potentially unstable, and are underlain by soft (unconsolidated) beds, which have rarely been studied. Innovative in situ wireless subglacial experiments and web connected RTK GPS data from Iceland have shown that stick-slick motion can occur at different time scales throughout the whole year, and this allowed the quantification of different sedimentary processes. We investigate the results from four soft bedded glaciers. We compare the similarities and differences; and in particular describe the relationship with subglacial hydrological processes and temperature rise. We discuss the implications for ice sheet models and reconstructions of Quaternary sedimentary processes.
Hart, Jane
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Martinez, Kirk
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Baurley, Nathaniel
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Robson, Benjamin
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27 May 2022
Hart, Jane
e949a885-7b26-4544-9e15-32ba6f87e49a
Martinez, Kirk
5f711898-20fc-410e-a007-837d8c57cb18
Baurley, Nathaniel
4f7b08da-72ac-42c8-be5d-a2893f09318b
Robson, Benjamin
ea6a160c-5678-4de6-be5b-4a9686891f12
Hart, Jane, Martinez, Kirk, Baurley, Nathaniel and Robson, Benjamin
(2022)
Quantifying subglacial soft bed sedimentary processes.
24th European Geosciences Union General Assembly, Online, Vienna, Austria.
23 - 27 May 2022.
1 pp
.
(doi:10.5194/egusphere-egu22-1801).
Record type:
Conference or Workshop Item
(Other)
Abstract
An understanding of subglacial processes are a vital component of ice-sheet models for sea level rise prediction as the use of different sliding laws can result in very different outcomes. In particular, the West Antarctic ice streams, are potentially unstable, and are underlain by soft (unconsolidated) beds, which have rarely been studied. Innovative in situ wireless subglacial experiments and web connected RTK GPS data from Iceland have shown that stick-slick motion can occur at different time scales throughout the whole year, and this allowed the quantification of different sedimentary processes. We investigate the results from four soft bedded glaciers. We compare the similarities and differences; and in particular describe the relationship with subglacial hydrological processes and temperature rise. We discuss the implications for ice sheet models and reconstructions of Quaternary sedimentary processes.
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EGU22-1801-print
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e-pub ahead of print date: 23 May 2022
Published date: 27 May 2022
Venue - Dates:
24th European Geosciences Union General Assembly, Online, Vienna, Austria, 2022-05-23 - 2022-05-27
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Local EPrints ID: 471601
URI: http://eprints.soton.ac.uk/id/eprint/471601
PURE UUID: 813694ab-3324-48ce-9bbb-d9412547eca3
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Date deposited: 14 Nov 2022 18:04
Last modified: 17 Mar 2024 04:13
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Contributors
Author:
Kirk Martinez
Author:
Nathaniel Baurley
Author:
Benjamin Robson
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