Simkins, L. M.Greenwood, S. L.Garcia, S. MunevarEareckson, E. A.Anderson, J. B.Prothro, L. O.2022-04-292022-04-292021-10-10Simkins, 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.https://hdl.handle.net/1969.6/90523Realistic 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-USAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/topographicmeltwatersubglacial environmentArticlehttps://doi.org/10.1029/2021GL094678