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    Ice flow direction change in interior West Antarctica (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-09-28
    Description: Upstream of Byrd Station (West Antarctica), ice-penetrating radar data reveal a distinctive fold structure within the ice, in which isochronous layers are unusually deep. The fold has an axis more than 50 kilometers long, which is aligned up to 45 degrees to the ice flow direction. Although explanations for the fold's formation under the present flow are problematic, it can be explained if flow was parallel to the fold axis approximately 1500 years ago. This flow change may be associated with ice stream alterations nearer the margin. If this is true, central West Antarctica may respond to future alterations more than previously thought.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Siegert, Martin J -- Welch, Brian -- Morse, David -- Vieli, Andreas -- Blankenship, Donald D -- Joughin, Ian -- King, Edward C -- Vieli, Gwendolyn J-M C Leysinger -- Payne, Antony J -- Jacobel, Robert -- New York, N.Y. -- Science. 2004 Sep 24;305(5692):1948-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Polar Observation and Modelling, Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK. m.j.siegert@bristol.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15448266" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Paleofluvial mega-canyon beneath the central Greenland ice sheet (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-08-31
    Description: Subglacial topography plays an important role in modulating the distribution and flow of basal water. Where topography predates ice sheet inception, it can also reveal insights into former tectonic and geomorphological processes. Although such associations are known in Antarctica, little consideration has been given to them in Greenland, partly because much of the ice sheet bed is thought to be relatively flat and smooth. Here, we present evidence from ice-penetrating radar data for a 750-km-long subglacial canyon in northern Greenland that is likely to have influenced basal water flow from the ice sheet interior to the margin. We suggest that the mega-canyon predates ice sheet inception and will have influenced basal hydrology in Greenland over past glacial cycles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bamber, Jonathan L -- Siegert, Martin J -- Griggs, Jennifer A -- Marshall, Shawn J -- Spada, Giorgio -- New York, N.Y. -- Science. 2013 Aug 30;341(6149):997-9. doi: 10.1126/science.1239794.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Bristol Glaciology Centre, University of Bristol, Bristol, UK. j.bamber@bristol.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23990558" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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