Topographic Controls on Channelized Meltwater in the Subglacial Environment
Realistic 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 wh...
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ftriceuniv:oai:scholarship.rice.edu:1911/111647 2023-05-15T13:39:43+02:00 Topographic Controls on Channelized Meltwater in the Subglacial Environment Simkins, L. M. Greenwood, S. L. Munevar Garcia, S. Eareckson, E. A. Anderson, J. B. Prothro, L. O. 2021 application/pdf https://hdl.handle.net/1911/111647 https://doi.org/10.1029/2021GL094678 eng eng Wiley Simkins, L. M., Greenwood, S. L., Munevar Garcia, S., et al. "Topographic Controls on Channelized Meltwater in the Subglacial Environment." Geophysical Research Letters, 48, no. 20 (2021) Wiley: https://doi.org/10.1029/2021GL094678. https://hdl.handle.net/1911/111647 2021GL094678 https://doi.org/10.1029/2021GL094678 This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ CC-BY Journal article Text publisher version 2021 ftriceuniv https://doi.org/10.1029/2021GL094678 2022-08-09T20:31:21Z Realistic 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. Article in Journal/Newspaper Antarc* Antarctic Rice University: Digital Scholarship Archive Antarctic Geophysical Research Letters 48 20 |
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Open Polar |
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Rice University: Digital Scholarship Archive |
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ftriceuniv |
language |
English |
description |
Realistic 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. |
format |
Article in Journal/Newspaper |
author |
Simkins, L. M. Greenwood, S. L. Munevar Garcia, S. Eareckson, E. A. Anderson, J. B. Prothro, L. O. |
spellingShingle |
Simkins, L. M. Greenwood, S. L. Munevar Garcia, S. Eareckson, E. A. Anderson, J. B. Prothro, L. O. Topographic Controls on Channelized Meltwater in the Subglacial Environment |
author_facet |
Simkins, L. M. Greenwood, S. L. Munevar Garcia, S. Eareckson, E. A. Anderson, J. B. Prothro, L. O. |
author_sort |
Simkins, L. M. |
title |
Topographic Controls on Channelized Meltwater in the Subglacial Environment |
title_short |
Topographic Controls on Channelized Meltwater in the Subglacial Environment |
title_full |
Topographic Controls on Channelized Meltwater in the Subglacial Environment |
title_fullStr |
Topographic Controls on Channelized Meltwater in the Subglacial Environment |
title_full_unstemmed |
Topographic Controls on Channelized Meltwater in the Subglacial Environment |
title_sort |
topographic controls on channelized meltwater in the subglacial environment |
publisher |
Wiley |
publishDate |
2021 |
url |
https://hdl.handle.net/1911/111647 https://doi.org/10.1029/2021GL094678 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Simkins, L. M., Greenwood, S. L., Munevar Garcia, S., et al. "Topographic Controls on Channelized Meltwater in the Subglacial Environment." Geophysical Research Letters, 48, no. 20 (2021) Wiley: https://doi.org/10.1029/2021GL094678. https://hdl.handle.net/1911/111647 2021GL094678 https://doi.org/10.1029/2021GL094678 |
op_rights |
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2021GL094678 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
20 |
_version_ |
1766122545484922880 |