Subglacial meltwater channels on the Antarctic continental shelf

James David Kirkham, University of Cambridge, Cambridge, United Kingdom, Kelly Hogan, NERC British Antarctic Survey, Cambridge, United Kingdom, Julian A. Dowdeswell, Scott Polar Research Institute, University of Cambridge, Cambridge, United Kingdom, Robert D Larter, British Antarctic Survey, Cambridge, United Kingdom, Neil S Arnold, Scott Polar Research Institute, Cambridge, United Kingdom, Frank Oliver Nitsche, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States and Nicholas R Golledge, GNS Science, Lower Hutt, New Zealand