Title: Rapid erosion, drumlin formation, and changing hydrology beneath an Antarctic ice stream
Abstract: Research Article| February 01, 2007 Rapid erosion, drumlin formation, and changing hydrology beneath an Antarctic ice stream A.M. Smith; A.M. Smith 1British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, UK Search for other works by this author on: GSW Google Scholar T. Murray; T. Murray 2University of Wales Swansea, Singleton Park, Swansea SA2 8PP, UK Search for other works by this author on: GSW Google Scholar K.W. Nicholls; K.W. Nicholls 3British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, UK Search for other works by this author on: GSW Google Scholar K. Makinson; K. Makinson 3British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, UK Search for other works by this author on: GSW Google Scholar G. Ađalgeirsdóttir; G. Ađalgeirsdóttir 4University of Wales Swansea, Singleton Park, Swansea SA2 8PP, UK Search for other works by this author on: GSW Google Scholar A.E. Behar; A.E. Behar 5Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109-8099, USA Search for other works by this author on: GSW Google Scholar D.G. Vaughan D.G. Vaughan 6British Antarctic Survey, Natural Environment Research Council, Madingley Road, Cambridge CB3 0ET, UK Search for other works by this author on: GSW Google Scholar Geology (2007) 35 (2): 127–130. https://doi.org/10.1130/G23036A.1 Article history received: 25 Jun 2006 rev-recd: 15 Sep 2006 accepted: 18 Sep 2006 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation A.M. Smith, T. Murray, K.W. Nicholls, K. Makinson, G. Ađalgeirsdóttir, A.E. Behar, D.G. Vaughan; Rapid erosion, drumlin formation, and changing hydrology beneath an Antarctic ice stream. Geology 2007;; 35 (2): 127–130. doi: https://doi.org/10.1130/G23036A.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract What happens beneath a glacier affects the way it flows and the landforms left behind when it retreats. Direct observations from beneath glaciers are, however, rare and the subglacial environment remains poorly understood. We present new, repeat observations from West Antarctica that show active processes beneath a modern glacier which can normally only be postulated from the geological record. We interpret erosion at a rate of 1 m a−1 beneath a fast-flowing ice stream, followed by cessation of erosion and the formation of a drumlin from mobilized sediment. We also interpret both mobilization and increased compaction of basal sediment with associated hydrological changes within the glacier bed. All these changes occurred on time scales of a few years or less. This variability suggests that an ice stream can reorganize its bed rapidly, and that present models of ice dynamics may not simulate all the relevant subglacial processes. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 223
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