Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica
Basal units – visibly distinct englacial structures near the ice-bed interface – warrant investigation for a number of reasons. Many are of unknown composition and origin, characteristics that could provide substantial insight into subglacial processes and ice-sheet history. Their significance, more...
Published in: | Annals of Glaciology |
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Cambridge University Press (CUP)
2020
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Online Access: | http://hdl.handle.net/10044/1/79772 https://doi.org/10.1017/aog.2020.27 |
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ftimperialcol:oai:spiral.imperial.ac.uk:10044/1/79772 2023-05-15T13:29:14+02:00 Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica Goldberg, M Schroeder, D Castelletti, D Mantelli, E Ross, N Siegert, M Natural Environment Research Council (NERC) British Council (UK) Stanford University 2020-04-21 http://hdl.handle.net/10044/1/79772 https://doi.org/10.1017/aog.2020.27 unknown Cambridge University Press (CUP) Annals of Glaciology 0260-3055 http://hdl.handle.net/10044/1/79772 doi:10.1017/aog.2020.27 NE/K004956/2 GEOG.RE2356 ICECAP-2 © The Author(s), 2020. Published by Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY 248 242 0401 Atmospheric Sciences 0404 Geophysics 0406 Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences Journal Article 2020 ftimperialcol https://doi.org/10.1017/aog.2020.27 2020-09-24T22:38:25Z Basal units – visibly distinct englacial structures near the ice-bed interface – warrant investigation for a number of reasons. Many are of unknown composition and origin, characteristics that could provide substantial insight into subglacial processes and ice-sheet history. Their significance, moreover, is not limited to near-bed depths; these units appear to dramatically influence the flow of surrounding ice. In order to enable improved characterization of these features, we develop and apply an algorithm that allows for the automatic detection of basal units. We use a tunable layer-optimized SAR processor to distinguish these structures from the bed, isochronous englacial layers and the ice-sheet surface, presenting a conceptual framework for the use of radio-echo character in the identification of ice-sheet features. We also outline a method by which our processor could be used to place observational constraints on basal units’ configuration, composition and provenance. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet Institute Ice Stream West Antarctica Imperial College London: Spiral Antarctic Institute Ice Stream ENVELOPE(-75.000,-75.000,-82.000,-82.000) West Antarctica Annals of Glaciology 61 81 242 248 |
institution |
Open Polar |
collection |
Imperial College London: Spiral |
op_collection_id |
ftimperialcol |
language |
unknown |
topic |
0401 Atmospheric Sciences 0404 Geophysics 0406 Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences |
spellingShingle |
0401 Atmospheric Sciences 0404 Geophysics 0406 Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences Goldberg, M Schroeder, D Castelletti, D Mantelli, E Ross, N Siegert, M Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica |
topic_facet |
0401 Atmospheric Sciences 0404 Geophysics 0406 Physical Geography and Environmental Geoscience Meteorology & Atmospheric Sciences |
description |
Basal units – visibly distinct englacial structures near the ice-bed interface – warrant investigation for a number of reasons. Many are of unknown composition and origin, characteristics that could provide substantial insight into subglacial processes and ice-sheet history. Their significance, moreover, is not limited to near-bed depths; these units appear to dramatically influence the flow of surrounding ice. In order to enable improved characterization of these features, we develop and apply an algorithm that allows for the automatic detection of basal units. We use a tunable layer-optimized SAR processor to distinguish these structures from the bed, isochronous englacial layers and the ice-sheet surface, presenting a conceptual framework for the use of radio-echo character in the identification of ice-sheet features. We also outline a method by which our processor could be used to place observational constraints on basal units’ configuration, composition and provenance. |
author2 |
Natural Environment Research Council (NERC) British Council (UK) |
format |
Article in Journal/Newspaper |
author |
Goldberg, M Schroeder, D Castelletti, D Mantelli, E Ross, N Siegert, M |
author_facet |
Goldberg, M Schroeder, D Castelletti, D Mantelli, E Ross, N Siegert, M |
author_sort |
Goldberg, M |
title |
Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica |
title_short |
Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica |
title_full |
Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica |
title_fullStr |
Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica |
title_full_unstemmed |
Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica |
title_sort |
automated detection and characterization of antarctic basal units using radar sounding data: demonstration in institute ice stream, west antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://hdl.handle.net/10044/1/79772 https://doi.org/10.1017/aog.2020.27 |
op_coverage |
Stanford University |
long_lat |
ENVELOPE(-75.000,-75.000,-82.000,-82.000) |
geographic |
Antarctic Institute Ice Stream West Antarctica |
geographic_facet |
Antarctic Institute Ice Stream West Antarctica |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet Institute Ice Stream West Antarctica |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Ice Sheet Institute Ice Stream West Antarctica |
op_source |
248 242 |
op_relation |
Annals of Glaciology 0260-3055 http://hdl.handle.net/10044/1/79772 doi:10.1017/aog.2020.27 NE/K004956/2 GEOG.RE2356 ICECAP-2 |
op_rights |
© The Author(s), 2020. Published by Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), 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/aog.2020.27 |
container_title |
Annals of Glaciology |
container_volume |
61 |
container_issue |
81 |
container_start_page |
242 |
op_container_end_page |
248 |
_version_ |
1765999447948394496 |