Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding

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dc.contributor.author Rutishauser, Anja
dc.contributor.author Grima, Cyril
dc.contributor.author Sharp, Martin
dc.contributor.author Blankenship, Donald D.
dc.contributor.author Young, Duncan A.
dc.contributor.author Cawkwell, Fiona
dc.contributor.author Dowdeswell, Julian A.
dc.date.accessioned 2017-06-16T13:41:01Z
dc.date.available 2017-06-16T13:41:01Z
dc.date.issued 2016-12-30
dc.identifier.citation 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 en
dc.identifier.volume 43 en
dc.identifier.issued 24 en
dc.identifier.startpage 12,502 en
dc.identifier.endpage 12,510 en
dc.identifier.issn 1944-8007
dc.identifier.uri http://hdl.handle.net/10468/4085
dc.identifier.doi 10.1002/2016GL071230
dc.description.abstract 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. en
dc.description.sponsorship Natural Environment Research Council (UK NERC (NE/K004999)); National Aeronautics and Space Administration (NASA(13-ICEE13-00018));Natural Sciences and Engineering Research Council of Canada (NSERC (DiscoveryGrant/Northern Research Supplement)); Alberta Innovates Technology Futures; EnvironmentCanada (CRYSYS Program); University of Alberta (Northern Research Award) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Geophysical Union en
dc.rights © 2016. American Geophysical Union. All Rights Reserved. en
dc.subject Scattering signal component en
dc.subject Radio-echo sounding en
dc.subject Firn characterization en
dc.subject Glaciology en
dc.subject Instruments and techniques en
dc.subject Glaciers en
dc.subject Ice sheets en
dc.title Characterizing near-surface firn using the scattered signal component of the glacier surface return from airborne radio-echo sounding en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Fiona Cawkwell, Geography, University College Cork, Cork, Ireland. +353-21-490-3000 Email: f.cawkwell@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 6 months after publication at the request of the publisher. en
dc.check.date 2017-06-30
dc.date.updated 2017-06-14T15:43:47Z
dc.description.version Published Version en
dc.internal.rssid 398941730
dc.contributor.funder Natural Environment Research Council en
dc.contributor.funder National Aeronautics and Space Administration en
dc.contributor.funder Natural Sciences and Engineering Research Council of Canada en
dc.contributor.funder University of Alberta en
dc.contributor.funder Alberta Innovates - Technology Futures en
dc.contributor.funder Environment Canada en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Geophysical Research Letters en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress f.cawkwell@ucc.ie en


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