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dc.contributor.authorYoung, Tun Jan
dc.contributor.authorSchroeder, Dustin M.
dc.contributor.authorChristoffersen, Poul
dc.contributor.authorLok, Lai B.
dc.contributor.authorNicholls, Keith W.
dc.contributor.authorBrennan, Paul V.
dc.contributor.authorDoyle, Samuel H.
dc.contributor.authorHubbard, Bryn
dc.contributor.authorHubbard, Alun Lloyd
dc.date.accessioned2018-08-29T10:37:57Z
dc.date.available2018-08-29T10:37:57Z
dc.date.issued2018-07-19
dc.description.abstractThe phase-sensitive radio-echo sounder (pRES) is a powerful new instrument that can measure the depth of internal layers and the glacier bed to millimetre accuracy. We use a stationary 16-antenna pRES array on Store Glacier in West Greenland to measure the three-dimensional orientation of dipping internal reflectors, extending the capabilities of pRES beyond conventional depth sounding. This novel technique portrays the effectiveness of pRES in deriving the orientation of dipping internal layers that may complement profiles obtained through other geophysical surveying methods. Deriving ice vertical strain rates from changes in layer depth as measured by a sequence of pRES observations assumes that the internal reflections come from vertically beneath the antenna. By revealing the orientation of internal reflectors and the potential deviation from nadir of their associated reflections, the use of an antenna array can correct this assumption. While the array configuration was able to resolve the geometry of englacial layers, the same configuration could not be used to accurately image the glacier bed. Here, we use simulations of the performance of different array geometries to identify configurations that can be tailored to study different types of basal geometry for future deployments.en_US
dc.description.sponsorshipUK Natural Environmental Research Council grants NE/K005871/1 (to PC) and NE/K006126 (to BH and AH) NASA Cryospheric Science grant NNX16AJ95G (to DMS) University of Cambridge Fieldwork Fund and Chung Wei Yi Co. Ltd. (to TJY)en_US
dc.descriptionSource at <a href=https://doi.org/10.1017/jog.2018.54> https://doi.org/10.1017/jog.2018.54 </a>.en_US
dc.identifier.citationYoung, T.J., Schroeder, P., Christoffersen, P., Lok, L.B., Nicholls, K.W., Brennan, P.V., ... Hubbard, A.L. (2018). Resolving the internal and basal geometry of ice masses using imaging phase-sensitive radar. Journal of Glaciology, 64(246), 649-660. https://doi.org/10.1017/jog.2018.54en_US
dc.identifier.cristinIDFRIDAID 1601340
dc.identifier.doi10.1017/jog.2018.54
dc.identifier.issn0022-1430
dc.identifier.issn1727-5652
dc.identifier.urihttps://hdl.handle.net/10037/13609
dc.language.isoengen_US
dc.publisherCambridge University Press (CUP)en_US
dc.relation.journalJournal of Glaciology
dc.rights.accessRightsopenAccessen_US
dc.subjectArctic glaciologyen_US
dc.subjectglaciological instruments and methodsen_US
dc.subjectground-penetrating radaren_US
dc.subjectradio-echo soundingen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.titleResolving the internal and basal geometry of ice masses using imaging phase-sensitive radaren_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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