Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding
We derive the scattered component (hereafter referred to as the incoherent component) of glacier surface echoes from airborne radio-echo sounding measurements over Devon Ice Cap, Arctic Canada, and compare the scattering distribution to firn stratigraphy observations from ground-based radar data. Lo...
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Online Access: | http://hdl.handle.net/10468/4085 https://doi.org/10.1002/2016GL071230 |
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ftunivcollcork:oai:cora.ucc.ie:10468/4085 2023-08-27T04:07:56+02:00 Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding Rutishauser, Anja Grima, Cyril Sharp, Martin Blankenship, Donald D. Young, Duncan A. Cawkwell, Fiona Dowdeswell, Julian A. 2016-12-30 application/pdf http://hdl.handle.net/10468/4085 https://doi.org/10.1002/2016GL071230 en eng American Geophysical Union Rutishauser, A., Grima, C., Sharp, M., Blankenship, D. D., Young, D. A., Cawkwell, F. and Dowdeswell, J. A. (2016) 'Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding', Geophysical Research Letters, 43(24), pp. 12,502-12,510. doi:10.1002/2016GL071230 doi:10.1002/2016GL071230 12,510 1944-8007 24 Geophysical Research Letters 12,502 http://hdl.handle.net/10468/4085 43 © 2016. American Geophysical Union. All Rights Reserved. Scattering signal component Radio-echo sounding Firn characterization Glaciology Instruments and techniques Glaciers Ice sheets Article (peer-reviewed) 2016 ftunivcollcork https://doi.org/10.1002/2016GL071230 2023-08-06T14:28:57Z We derive the scattered component (hereafter referred to as the incoherent component) of glacier surface echoes from airborne radio-echo sounding measurements over Devon Ice Cap, Arctic Canada, and compare the scattering distribution to firn stratigraphy observations from ground-based radar data. Low scattering correlates to laterally homogeneous firn above 1800 m elevation containing thin, flat, and continuous ice layers and below 1200 m elevation where firn predominantly consists of ice. Increased scattering between elevations of 1200–1800 m corresponds to firn with inhomogeneous, undulating ice layers. No correlation was found to surface roughness and its theoretical incoherent backscattering values. This indicates that the scattering component is mainly influenced by the near-surface firn stratigraphy, whereas surface roughness effects are minor. Our results suggest that analyzing the scattered signal component of glacier surface echoes is a promising approach to characterize the spatial heterogeneity of firn that is affected by melting and refreezing processes. Article in Journal/Newspaper Arctic glacier* Ice cap University College Cork, Ireland: Cork Open Research Archive (CORA) Arctic Canada Devon Ice Cap ENVELOPE(-82.499,-82.499,75.335,75.335) Geophysical Research Letters 43 24 |
institution |
Open Polar |
collection |
University College Cork, Ireland: Cork Open Research Archive (CORA) |
op_collection_id |
ftunivcollcork |
language |
English |
topic |
Scattering signal component Radio-echo sounding Firn characterization Glaciology Instruments and techniques Glaciers Ice sheets |
spellingShingle |
Scattering signal component Radio-echo sounding Firn characterization Glaciology Instruments and techniques Glaciers Ice sheets Rutishauser, Anja Grima, Cyril Sharp, Martin Blankenship, Donald D. Young, Duncan A. Cawkwell, Fiona Dowdeswell, Julian A. Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
topic_facet |
Scattering signal component Radio-echo sounding Firn characterization Glaciology Instruments and techniques Glaciers Ice sheets |
description |
We derive the scattered component (hereafter referred to as the incoherent component) of glacier surface echoes from airborne radio-echo sounding measurements over Devon Ice Cap, Arctic Canada, and compare the scattering distribution to firn stratigraphy observations from ground-based radar data. Low scattering correlates to laterally homogeneous firn above 1800 m elevation containing thin, flat, and continuous ice layers and below 1200 m elevation where firn predominantly consists of ice. Increased scattering between elevations of 1200–1800 m corresponds to firn with inhomogeneous, undulating ice layers. No correlation was found to surface roughness and its theoretical incoherent backscattering values. This indicates that the scattering component is mainly influenced by the near-surface firn stratigraphy, whereas surface roughness effects are minor. Our results suggest that analyzing the scattered signal component of glacier surface echoes is a promising approach to characterize the spatial heterogeneity of firn that is affected by melting and refreezing processes. |
format |
Article in Journal/Newspaper |
author |
Rutishauser, Anja Grima, Cyril Sharp, Martin Blankenship, Donald D. Young, Duncan A. Cawkwell, Fiona Dowdeswell, Julian A. |
author_facet |
Rutishauser, Anja Grima, Cyril Sharp, Martin Blankenship, Donald D. Young, Duncan A. Cawkwell, Fiona Dowdeswell, Julian A. |
author_sort |
Rutishauser, Anja |
title |
Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
title_short |
Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
title_full |
Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
title_fullStr |
Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
title_full_unstemmed |
Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
title_sort |
characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding |
publisher |
American Geophysical Union |
publishDate |
2016 |
url |
http://hdl.handle.net/10468/4085 https://doi.org/10.1002/2016GL071230 |
long_lat |
ENVELOPE(-82.499,-82.499,75.335,75.335) |
geographic |
Arctic Canada Devon Ice Cap |
geographic_facet |
Arctic Canada Devon Ice Cap |
genre |
Arctic glacier* Ice cap |
genre_facet |
Arctic glacier* Ice cap |
op_relation |
Rutishauser, A., Grima, C., Sharp, M., Blankenship, D. D., Young, D. A., Cawkwell, F. and Dowdeswell, J. A. (2016) 'Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding', Geophysical Research Letters, 43(24), pp. 12,502-12,510. doi:10.1002/2016GL071230 doi:10.1002/2016GL071230 12,510 1944-8007 24 Geophysical Research Letters 12,502 http://hdl.handle.net/10468/4085 43 |
op_rights |
© 2016. American Geophysical Union. All Rights Reserved. |
op_doi |
https://doi.org/10.1002/2016GL071230 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
24 |
_version_ |
1775348648860712960 |