Topographic controls on channelized meltwater in the subglacial environment

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dc.contributor.authorSimkins, L. M.
dc.contributor.authorGreenwood, S. L.
dc.contributor.authorGarcia, S. Munevar
dc.contributor.authorEareckson, E. A.
dc.contributor.authorAnderson, J. B.
dc.contributor.authorProthro, L. O.
dc.creator.orcidhttps://orcid.org/0000-0002-9075-5196en_US
dc.creator.orcidhttps://orcid.org/0000-0003-3048-7916en_US
dc.creator.orcidhttps://orcid.org/0000-0003-1291-7978en_US
dc.creator.orcidhttps://orcid.org/0000-0002-0515-5656en_US
dc.creator.orcidhttps://orcid.org/0000-0002-3104-5557en_US
dc.creator.orcidhttps://orcid.org/0000-0003-3385-8487en_US
dc.creator.orcidhttps://orcid.org/0000-0002-9075-5196
dc.creator.orcidhttps://orcid.org/0000-0003-3048-7916
dc.creator.orcidhttps://orcid.org/0000-0003-1291-7978
dc.creator.orcidhttps://orcid.org/0000-0002-0515-5656
dc.creator.orcidhttps://orcid.org/0000-0002-3104-5557
dc.creator.orcidhttps://orcid.org/0000-0003-3385-8487
dc.date.accessioned2022-04-29T20:31:22Z
dc.date.available2022-04-29T20:31:22Z
dc.date.issued2021-10-10
dc.description.abstractRealistic characterization of subglacial hydrology necessitates knowledge of the range in form, scale, and spatiotemporal evolution of drainage networks. A relict subglacial meltwater corridor on the deglaciated Antarctic continental shelf encompasses 80 convergent and divergent channels, many of which are hundreds of meters wide and several of which lack a definable headwater source. Without significant surface-melt contributions to the bed like similarly described landforms in the Northern Hemisphere, channelized drainage capacity varies non-systematically by three orders of magnitude downstream. This signifies apparent additions and losses of basal water to the bed-channelized system that relates to bed topography. Larger magnitude grounding-line retreat events occurred while the channel system was active than once channelized drainage had ceased. Overall, this corridor demonstrates that meltwater drainage styles co-exist in time and space in response to bed topography, with prolonged impacts on grounding-line behavior.en_US
dc.identifier.citationSimkins, L.M., Greenwood, S.L., Munevar Garcia, S., Eareckson, E.A., Anderson, J.B. and Prothro, L.O., 2021. Topographic controls on channelized meltwater in the subglacial environment. Geophysical Research Letters, 48(20), p.e2021GL094678.en_US
dc.identifier.doihttps://doi.org/10.1029/2021GL094678
dc.identifier.urihttps://hdl.handle.net/1969.6/90523
dc.language.isoen_USen_US
dc.publisherAGUen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjecttopographicen_US
dc.subjectmeltwateren_US
dc.subjectsubglacial environmenten_US
dc.titleTopographic controls on channelized meltwater in the subglacial environmenten_US
dc.typeArticleen_US

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