Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison.
The 3D geometrical evolution of the Barents Sea Ice Sheet (BSIS), particularly during its late-glacial retreat phase, remains largely ambiguous due to the paucity of direct marine- and terrestrial-based evidence constraining its horizontal and vertical extent and chronology. One way of validating th...
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Online Access: | http://dro.dur.ac.uk/19436/ http://dro.dur.ac.uk/19436/1/19436.pdf https://doi.org/10.1016/j.quascirev.2016.02.011 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:19436 2023-05-15T15:38:33+02:00 Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. Auriac, A. Whitehouse, P.L. Bentley, M.J. Patton, H. Lloyd, J.M. Hubbard, A. 2016-09-01 application/pdf http://dro.dur.ac.uk/19436/ http://dro.dur.ac.uk/19436/1/19436.pdf https://doi.org/10.1016/j.quascirev.2016.02.011 unknown Elsevier dro:19436 issn:0277-3791 doi:10.1016/j.quascirev.2016.02.011 http://dro.dur.ac.uk/19436/ http://dx.doi.org/10.1016/j.quascirev.2016.02.011 http://dro.dur.ac.uk/19436/1/19436.pdf © 2016 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ CC-BY-NC-ND Quaternary science reviews, 2016, Vol.147, pp.122-135 [Peer Reviewed Journal] Article PeerReviewed 2016 ftunivdurham https://doi.org/10.1016/j.quascirev.2016.02.011 2020-06-04T22:23:13Z The 3D geometrical evolution of the Barents Sea Ice Sheet (BSIS), particularly during its late-glacial retreat phase, remains largely ambiguous due to the paucity of direct marine- and terrestrial-based evidence constraining its horizontal and vertical extent and chronology. One way of validating the numerous BSIS reconstructions previously proposed is to collate and apply them under a wide range of Earth models and to compare prognostic (isostatic) output through time with known relative sea-level (RSL) data. Here we compare six contrasting BSIS load scenarios via a spherical Earth system model and derive a best-fit, χ2 parameter using RSL data from the four main terrestrial regions within the domain: Svalbard, Franz Josef Land, Novaya Zemlya and northern Norway. Poor χ2 values allow two load scenarios to be dismissed, leaving four that agree well with RSL observations. The remaining four scenarios optimally fit the RSL data when combined with Earth models that have an upper mantle viscosity of 0.2–2 × 1021 Pa s, while there is less sensitivity to the lithosphere thickness (ranging from 71 to 120 km) and lower mantle viscosity (spanning 1–50 × 1021 Pa s). GPS observations are also compared with predictions of present-day uplift across the Barents Sea. Key locations where relative sea-level and GPS data would prove critical in constraining future ice-sheet modelling efforts are also identified. Article in Journal/Newspaper Barents Sea Franz Josef Land Ice Sheet Northern Norway Novaya Zemlya Sea ice Svalbard Durham University: Durham Research Online Barents Sea Franz Josef Land ENVELOPE(55.000,55.000,81.000,81.000) Norway Svalbard Quaternary Science Reviews 147 122 135 |
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Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
description |
The 3D geometrical evolution of the Barents Sea Ice Sheet (BSIS), particularly during its late-glacial retreat phase, remains largely ambiguous due to the paucity of direct marine- and terrestrial-based evidence constraining its horizontal and vertical extent and chronology. One way of validating the numerous BSIS reconstructions previously proposed is to collate and apply them under a wide range of Earth models and to compare prognostic (isostatic) output through time with known relative sea-level (RSL) data. Here we compare six contrasting BSIS load scenarios via a spherical Earth system model and derive a best-fit, χ2 parameter using RSL data from the four main terrestrial regions within the domain: Svalbard, Franz Josef Land, Novaya Zemlya and northern Norway. Poor χ2 values allow two load scenarios to be dismissed, leaving four that agree well with RSL observations. The remaining four scenarios optimally fit the RSL data when combined with Earth models that have an upper mantle viscosity of 0.2–2 × 1021 Pa s, while there is less sensitivity to the lithosphere thickness (ranging from 71 to 120 km) and lower mantle viscosity (spanning 1–50 × 1021 Pa s). GPS observations are also compared with predictions of present-day uplift across the Barents Sea. Key locations where relative sea-level and GPS data would prove critical in constraining future ice-sheet modelling efforts are also identified. |
format |
Article in Journal/Newspaper |
author |
Auriac, A. Whitehouse, P.L. Bentley, M.J. Patton, H. Lloyd, J.M. Hubbard, A. |
spellingShingle |
Auriac, A. Whitehouse, P.L. Bentley, M.J. Patton, H. Lloyd, J.M. Hubbard, A. Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. |
author_facet |
Auriac, A. Whitehouse, P.L. Bentley, M.J. Patton, H. Lloyd, J.M. Hubbard, A. |
author_sort |
Auriac, A. |
title |
Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. |
title_short |
Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. |
title_full |
Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. |
title_fullStr |
Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. |
title_full_unstemmed |
Glacial isostatic adjustment associated with the Barents Sea ice sheet : a modelling inter-comparison. |
title_sort |
glacial isostatic adjustment associated with the barents sea ice sheet : a modelling inter-comparison. |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://dro.dur.ac.uk/19436/ http://dro.dur.ac.uk/19436/1/19436.pdf https://doi.org/10.1016/j.quascirev.2016.02.011 |
long_lat |
ENVELOPE(55.000,55.000,81.000,81.000) |
geographic |
Barents Sea Franz Josef Land Norway Svalbard |
geographic_facet |
Barents Sea Franz Josef Land Norway Svalbard |
genre |
Barents Sea Franz Josef Land Ice Sheet Northern Norway Novaya Zemlya Sea ice Svalbard |
genre_facet |
Barents Sea Franz Josef Land Ice Sheet Northern Norway Novaya Zemlya Sea ice Svalbard |
op_source |
Quaternary science reviews, 2016, Vol.147, pp.122-135 [Peer Reviewed Journal] |
op_relation |
dro:19436 issn:0277-3791 doi:10.1016/j.quascirev.2016.02.011 http://dro.dur.ac.uk/19436/ http://dx.doi.org/10.1016/j.quascirev.2016.02.011 http://dro.dur.ac.uk/19436/1/19436.pdf |
op_rights |
© 2016 This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.quascirev.2016.02.011 |
container_title |
Quaternary Science Reviews |
container_volume |
147 |
container_start_page |
122 |
op_container_end_page |
135 |
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1766369590027223040 |