Isochronous information in a Greenland ice sheet radio-echo sounding dataset
The evaluation of ice sheet models is one of the pressing problems in the study of ice sheets dynamics. Here we examine the question of how much isochronous information is contained within the publicly available CReSIS Greenland airborne radio-echo soundings dataset. We identify regions containing i...
Published in: | Geophysical Research Letters |
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ftnerc:oai:nora.nerc.ac.uk:503164 2023-05-15T16:27:26+02:00 Isochronous information in a Greenland ice sheet radio-echo sounding dataset Sime, Louise C. Karlsson, Nanna B. Paden, John D. Gogineni, S. Prasad 2014-02-14 text http://nora.nerc.ac.uk/id/eprint/503164/ https://nora.nerc.ac.uk/id/eprint/503164/1/grl51452.pdf en eng Wiley https://nora.nerc.ac.uk/id/eprint/503164/1/grl51452.pdf Sime, Louise C. orcid:0000-0002-9093-7926 Karlsson, Nanna B.; Paden, John D.; Gogineni, S. Prasad. 2014 Isochronous information in a Greenland ice sheet radio-echo sounding dataset. Geophysical Research Letters, 41 (5). 1593-1599. https://doi.org/10.1002/2013GL057928 <https://doi.org/10.1002/2013GL057928> Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.1002/2013GL057928 2023-02-04T19:37:42Z The evaluation of ice sheet models is one of the pressing problems in the study of ice sheets dynamics. Here we examine the question of how much isochronous information is contained within the publicly available CReSIS Greenland airborne radio-echo soundings dataset. We identify regions containing isochronous reflectors using ARESP algorithms [Sime et al., 2011]. We find that isochronous reflectors are present within 36% of the CReSIS RES englacial data by location, and 41% by total number of data. Between 1000 and 3000 m in depth, isochronous reflectors are present along more than 50% of the dataset flight path. Lower volumes of cold glacial period ice also correspond with more isochronous reflectors. We find good agreement between ARESP and continuity index [Karlsson et al., 2012] results, providing confidence in these findings. Ice structure datasets, based on data identified here, will be of use in evaluating ice sheet simulations and the assessment of past rates of snow accumulation. Article in Journal/Newspaper Greenland Ice Sheet Natural Environment Research Council: NERC Open Research Archive Greenland Geophysical Research Letters 41 5 1593 1599 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The evaluation of ice sheet models is one of the pressing problems in the study of ice sheets dynamics. Here we examine the question of how much isochronous information is contained within the publicly available CReSIS Greenland airborne radio-echo soundings dataset. We identify regions containing isochronous reflectors using ARESP algorithms [Sime et al., 2011]. We find that isochronous reflectors are present within 36% of the CReSIS RES englacial data by location, and 41% by total number of data. Between 1000 and 3000 m in depth, isochronous reflectors are present along more than 50% of the dataset flight path. Lower volumes of cold glacial period ice also correspond with more isochronous reflectors. We find good agreement between ARESP and continuity index [Karlsson et al., 2012] results, providing confidence in these findings. Ice structure datasets, based on data identified here, will be of use in evaluating ice sheet simulations and the assessment of past rates of snow accumulation. |
format |
Article in Journal/Newspaper |
author |
Sime, Louise C. Karlsson, Nanna B. Paden, John D. Gogineni, S. Prasad |
spellingShingle |
Sime, Louise C. Karlsson, Nanna B. Paden, John D. Gogineni, S. Prasad Isochronous information in a Greenland ice sheet radio-echo sounding dataset |
author_facet |
Sime, Louise C. Karlsson, Nanna B. Paden, John D. Gogineni, S. Prasad |
author_sort |
Sime, Louise C. |
title |
Isochronous information in a Greenland ice sheet radio-echo sounding dataset |
title_short |
Isochronous information in a Greenland ice sheet radio-echo sounding dataset |
title_full |
Isochronous information in a Greenland ice sheet radio-echo sounding dataset |
title_fullStr |
Isochronous information in a Greenland ice sheet radio-echo sounding dataset |
title_full_unstemmed |
Isochronous information in a Greenland ice sheet radio-echo sounding dataset |
title_sort |
isochronous information in a greenland ice sheet radio-echo sounding dataset |
publisher |
Wiley |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/503164/ https://nora.nerc.ac.uk/id/eprint/503164/1/grl51452.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://nora.nerc.ac.uk/id/eprint/503164/1/grl51452.pdf Sime, Louise C. orcid:0000-0002-9093-7926 Karlsson, Nanna B.; Paden, John D.; Gogineni, S. Prasad. 2014 Isochronous information in a Greenland ice sheet radio-echo sounding dataset. Geophysical Research Letters, 41 (5). 1593-1599. https://doi.org/10.1002/2013GL057928 <https://doi.org/10.1002/2013GL057928> |
op_doi |
https://doi.org/10.1002/2013GL057928 |
container_title |
Geophysical Research Letters |
container_volume |
41 |
container_issue |
5 |
container_start_page |
1593 |
op_container_end_page |
1599 |
_version_ |
1766016613645025280 |