A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers
Radio-echo sounding (RES) of polar ice sheets reveals extensive internal layering. The degree of continuity of internal layering holds critical information about the ice-flow field, but previous analyses of this parameter have been limited to qualitative classifications. Here we present a new quanti...
Published in: | Earth and Planetary Science Letters |
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Language: | English |
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2012
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Online Access: | https://curis.ku.dk/portal/da/publications/a-continuityindex-for-assessing-icesheet-dynamics-from-radarsounded-internal-layers(12c27a17-30ef-4dd3-b43a-d635affe5f40).html https://doi.org/10.1016/j.epsl.2012.04.034 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/12c27a17-30ef-4dd3-b43a-d635affe5f40 2023-05-15T13:37:05+02:00 A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers Karlsson, Nanna Bjørnholt Rippin, David Bingham, Robert G. Vaughan, David 2012 https://curis.ku.dk/portal/da/publications/a-continuityindex-for-assessing-icesheet-dynamics-from-radarsounded-internal-layers(12c27a17-30ef-4dd3-b43a-d635affe5f40).html https://doi.org/10.1016/j.epsl.2012.04.034 eng eng info:eu-repo/semantics/restrictedAccess Karlsson , N B , Rippin , D , Bingham , R G & Vaughan , D 2012 , ' A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers ' , Earth and Planetary Science Letters , vol. 335-336 , pp. 88-94 . < http://dx.doi.org/10.1016/j.epsl.2012.04.034 > /dk/atira/pure/core/keywords/TheFacultyOfScience Faculty of Science article 2012 ftcopenhagenunip https://doi.org/10.1016/j.epsl.2012.04.034 2022-02-24T00:10:09Z Radio-echo sounding (RES) of polar ice sheets reveals extensive internal layering. The degree of continuity of internal layering holds critical information about the ice-flow field, but previous analyses of this parameter have been limited to qualitative classifications. Here we present a new quantitative method for analyzing internal layer continuity—named the continuity-index. When applied to data from Pine Island Glacier, West Antarctica, the new method clearly identifies a continuum of discontinuity of internal layers that corresponds with the current ice-velocity field. The analysis provides further support that the main trunk and tributaries are unlikely to have undergone substantial migration since the deposition of the internal layering. Significantly, our new method for analyzing internal layers is readily transferable across RES datasets, offering promise for data-led assessments of past and present flow dynamics across large areas of Antarctica and Greenland. Radio-echo sounding (RES) of polar icesheets reveals extensive internal layering. The degree of continuity of internal layering holds critical information about the ice-flow field, but previous analyses of this parameter have been limited to qualitative classifications. Here we present a new quantitative method for analyzing internallayercontinuity—named the continuity-index. When applied to data from Pine Island Glacier, West Antarctica, the new method clearly identifies a continuum of discontinuity of internallayers that corresponds with the current ice-velocity field. The analysis provides further support that the main trunk and tributaries are unlikely to have undergone substantial migration since the deposition of the internal layering. Significantly, our new method for analyzing internallayers is readily transferable across RES datasets, offering promise for data-led assessments of past and present flow dynamics across large areas of Antarctica and Greenland. Article in Journal/Newspaper Antarc* Antarctica glacier Greenland Ice Sheet Pine Island Pine Island Glacier West Antarctica University of Copenhagen: Research Greenland Pine Island Glacier ENVELOPE(-101.000,-101.000,-75.000,-75.000) West Antarctica Earth and Planetary Science Letters 335-336 88 94 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
/dk/atira/pure/core/keywords/TheFacultyOfScience Faculty of Science |
spellingShingle |
/dk/atira/pure/core/keywords/TheFacultyOfScience Faculty of Science Karlsson, Nanna Bjørnholt Rippin, David Bingham, Robert G. Vaughan, David A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
topic_facet |
/dk/atira/pure/core/keywords/TheFacultyOfScience Faculty of Science |
description |
Radio-echo sounding (RES) of polar ice sheets reveals extensive internal layering. The degree of continuity of internal layering holds critical information about the ice-flow field, but previous analyses of this parameter have been limited to qualitative classifications. Here we present a new quantitative method for analyzing internal layer continuity—named the continuity-index. When applied to data from Pine Island Glacier, West Antarctica, the new method clearly identifies a continuum of discontinuity of internal layers that corresponds with the current ice-velocity field. The analysis provides further support that the main trunk and tributaries are unlikely to have undergone substantial migration since the deposition of the internal layering. Significantly, our new method for analyzing internal layers is readily transferable across RES datasets, offering promise for data-led assessments of past and present flow dynamics across large areas of Antarctica and Greenland. Radio-echo sounding (RES) of polar icesheets reveals extensive internal layering. The degree of continuity of internal layering holds critical information about the ice-flow field, but previous analyses of this parameter have been limited to qualitative classifications. Here we present a new quantitative method for analyzing internallayercontinuity—named the continuity-index. When applied to data from Pine Island Glacier, West Antarctica, the new method clearly identifies a continuum of discontinuity of internallayers that corresponds with the current ice-velocity field. The analysis provides further support that the main trunk and tributaries are unlikely to have undergone substantial migration since the deposition of the internal layering. Significantly, our new method for analyzing internallayers is readily transferable across RES datasets, offering promise for data-led assessments of past and present flow dynamics across large areas of Antarctica and Greenland. |
format |
Article in Journal/Newspaper |
author |
Karlsson, Nanna Bjørnholt Rippin, David Bingham, Robert G. Vaughan, David |
author_facet |
Karlsson, Nanna Bjørnholt Rippin, David Bingham, Robert G. Vaughan, David |
author_sort |
Karlsson, Nanna Bjørnholt |
title |
A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
title_short |
A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
title_full |
A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
title_fullStr |
A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
title_full_unstemmed |
A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
title_sort |
"continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers |
publishDate |
2012 |
url |
https://curis.ku.dk/portal/da/publications/a-continuityindex-for-assessing-icesheet-dynamics-from-radarsounded-internal-layers(12c27a17-30ef-4dd3-b43a-d635affe5f40).html https://doi.org/10.1016/j.epsl.2012.04.034 |
long_lat |
ENVELOPE(-101.000,-101.000,-75.000,-75.000) |
geographic |
Greenland Pine Island Glacier West Antarctica |
geographic_facet |
Greenland Pine Island Glacier West Antarctica |
genre |
Antarc* Antarctica glacier Greenland Ice Sheet Pine Island Pine Island Glacier West Antarctica |
genre_facet |
Antarc* Antarctica glacier Greenland Ice Sheet Pine Island Pine Island Glacier West Antarctica |
op_source |
Karlsson , N B , Rippin , D , Bingham , R G & Vaughan , D 2012 , ' A "continuity-index" for assessing ice-sheet dynamics from radar-sounded internal layers ' , Earth and Planetary Science Letters , vol. 335-336 , pp. 88-94 . < http://dx.doi.org/10.1016/j.epsl.2012.04.034 > |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2012.04.034 |
container_title |
Earth and Planetary Science Letters |
container_volume |
335-336 |
container_start_page |
88 |
op_container_end_page |
94 |
_version_ |
1766087982476951552 |