The glacial geomorphology of the Antarctic ice sheet bed.
In 1976, David Sugden and Brian John developed a classification for Antarctic landscapes of glacial erosion based upon exposed and eroded coastal topography, providing insight into the past glacial dynamics of the Antarctic ice sheets. We extend this classification to cover the continental interior...
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Cambridge University Press
2014
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:12078 2023-05-15T13:59:22+02:00 The glacial geomorphology of the Antarctic ice sheet bed. Jamieson, S.S.R. Stokes, C.R. Ross, N. Rippin, D.M. Bingham, R.G. Wilson, D.S. Margold, M. Bentley, M.J. 2014-12-01 application/pdf http://dro.dur.ac.uk/12078/ http://dro.dur.ac.uk/12078/1/12078.pdf http://dro.dur.ac.uk/12078/2/12078.pdf https://doi.org/10.1017/S0954102014000212 unknown Cambridge University Press dro:12078 issn:0954-1020 issn: 1365-2079 doi:10.1017/S0954102014000212 http://dro.dur.ac.uk/12078/ http://dx.doi.org/10.1017/S0954102014000212 http://dro.dur.ac.uk/12078/1/12078.pdf http://dro.dur.ac.uk/12078/2/12078.pdf © Antarctic Science Ltd 2014 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY Antarctic science, 2014, Vol.26(6), pp.724-741 [Peer Reviewed Journal] Antarctica Cenozoic Glacial erosion Ice sheet history Landscape evolution Morphometry Article PeerReviewed 2014 ftunivdurham https://doi.org/10.1017/S0954102014000212 2020-05-28T22:30:29Z In 1976, David Sugden and Brian John developed a classification for Antarctic landscapes of glacial erosion based upon exposed and eroded coastal topography, providing insight into the past glacial dynamics of the Antarctic ice sheets. We extend this classification to cover the continental interior of Antarctica by analysing the hypsometry of the subglacial landscape using a recently released dataset of bed topography (BEDMAP2). We used the existing classification as a basis for first developing a low-resolution description of landscape evolution under the ice sheet before building a more detailed classification of patterns of glacial erosion. Our key finding is that a more widespread distribution of ancient, preserved alpine landscapes may survive beneath the Antarctic ice sheets than has been previously recognized. Furthermore, the findings suggest that landscapes of selective erosion exist further inland than might be expected, and may reflect the presence of thinner, less extensive ice in the past. Much of the selective nature of erosion may be controlled by pre-glacial topography, and especially by the large-scale tectonic structure and fluvial valley network. The hypotheses of landscape evolution presented here can be tested by future surveys of the Antarctic ice sheet bed. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Ice Sheet Durham University: Durham Research Online Antarctic The Antarctic Antarctic Science 26 6 724 741 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
topic |
Antarctica Cenozoic Glacial erosion Ice sheet history Landscape evolution Morphometry |
spellingShingle |
Antarctica Cenozoic Glacial erosion Ice sheet history Landscape evolution Morphometry Jamieson, S.S.R. Stokes, C.R. Ross, N. Rippin, D.M. Bingham, R.G. Wilson, D.S. Margold, M. Bentley, M.J. The glacial geomorphology of the Antarctic ice sheet bed. |
topic_facet |
Antarctica Cenozoic Glacial erosion Ice sheet history Landscape evolution Morphometry |
description |
In 1976, David Sugden and Brian John developed a classification for Antarctic landscapes of glacial erosion based upon exposed and eroded coastal topography, providing insight into the past glacial dynamics of the Antarctic ice sheets. We extend this classification to cover the continental interior of Antarctica by analysing the hypsometry of the subglacial landscape using a recently released dataset of bed topography (BEDMAP2). We used the existing classification as a basis for first developing a low-resolution description of landscape evolution under the ice sheet before building a more detailed classification of patterns of glacial erosion. Our key finding is that a more widespread distribution of ancient, preserved alpine landscapes may survive beneath the Antarctic ice sheets than has been previously recognized. Furthermore, the findings suggest that landscapes of selective erosion exist further inland than might be expected, and may reflect the presence of thinner, less extensive ice in the past. Much of the selective nature of erosion may be controlled by pre-glacial topography, and especially by the large-scale tectonic structure and fluvial valley network. The hypotheses of landscape evolution presented here can be tested by future surveys of the Antarctic ice sheet bed. |
format |
Article in Journal/Newspaper |
author |
Jamieson, S.S.R. Stokes, C.R. Ross, N. Rippin, D.M. Bingham, R.G. Wilson, D.S. Margold, M. Bentley, M.J. |
author_facet |
Jamieson, S.S.R. Stokes, C.R. Ross, N. Rippin, D.M. Bingham, R.G. Wilson, D.S. Margold, M. Bentley, M.J. |
author_sort |
Jamieson, S.S.R. |
title |
The glacial geomorphology of the Antarctic ice sheet bed. |
title_short |
The glacial geomorphology of the Antarctic ice sheet bed. |
title_full |
The glacial geomorphology of the Antarctic ice sheet bed. |
title_fullStr |
The glacial geomorphology of the Antarctic ice sheet bed. |
title_full_unstemmed |
The glacial geomorphology of the Antarctic ice sheet bed. |
title_sort |
glacial geomorphology of the antarctic ice sheet bed. |
publisher |
Cambridge University Press |
publishDate |
2014 |
url |
http://dro.dur.ac.uk/12078/ http://dro.dur.ac.uk/12078/1/12078.pdf http://dro.dur.ac.uk/12078/2/12078.pdf https://doi.org/10.1017/S0954102014000212 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic Science Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Ice Sheet |
op_source |
Antarctic science, 2014, Vol.26(6), pp.724-741 [Peer Reviewed Journal] |
op_relation |
dro:12078 issn:0954-1020 issn: 1365-2079 doi:10.1017/S0954102014000212 http://dro.dur.ac.uk/12078/ http://dx.doi.org/10.1017/S0954102014000212 http://dro.dur.ac.uk/12078/1/12078.pdf http://dro.dur.ac.uk/12078/2/12078.pdf |
op_rights |
© Antarctic Science Ltd 2014 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1017/S0954102014000212 |
container_title |
Antarctic Science |
container_volume |
26 |
container_issue |
6 |
container_start_page |
724 |
op_container_end_page |
741 |
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1766267916265717760 |