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dc.contributor.authorVanderveen, Cornelis J.
dc.contributor.authorStearns, Leigh A.
dc.contributor.authorJohnson, Jay T.
dc.contributor.authorCsatho, Bea M.
dc.date.accessioned2015-12-16T16:25:30Z
dc.date.available2015-12-16T16:25:30Z
dc.date.issued2014-12
dc.identifier.citationVeen, C. J. Van Der, L. A. Stearns, J. Johnson, and B. Csatho. "Flow Dynamics of Byrd Glacier, East Antarctica." Journal of Glaciology 60.224 (2014): 1053-064. http://dx.doi.org/10.3189/2014JoG14J052en_US
dc.identifier.urihttp://hdl.handle.net/1808/19197
dc.descriptionThis is the published version. Copyright 2014en_US
dc.description.abstractForce-balance calculations on Byrd Glacier, East Antarctica, reveal large spatial variations in the along-flow component of driving stress with corresponding sticky spots that are stationary over time. On the large scale, flow resistance is partitioned between basal (∼80%) and lateral (∼20%) drag. Ice flow is due mostly to basal sliding and concentrated vertical shear in the basal ice layers, indicating the bed is at or close to the pressure-melting temperature. There is a significant component of driving stress in the across-flow direction resulting in nonzero basal drag in that direction. This is an unrealistic result and we propose that there are spatial variations of bed features resulting in small-scale flow disturbances. The grounding line of Byrd Glacier is located in a region where the bed slopes upward. Nevertheless, despite a 10% increase in ice discharge between December 2005 and February 2007, following drainage of two subglacial lakes in the catchment area, the position of the grounding line has not retreated significantly and the glacier has decelerated since then. During the speed-up event, partitioning of flow resistance did not change, suggesting the increase in velocity was caused by a temporary decrease in basal effective pressure.en_US
dc.publisherInternational Glaciological Societyen_US
dc.subjectANTARCTIC GLACIOLOGYen_US
dc.subjectGLACIER FLOWen_US
dc.subjectICE DYNAMICSen_US
dc.titleFlow dynamics of Byrd Glacier, East Antarcticaen_US
dc.typeArticle
kusw.kuauthorVanderveen, Cornelis J.
kusw.kudepartmentGeography & Atmospheric Sciencen_US
dc.identifier.doi10.3189/2014JoG14J052
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item meets KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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