%0 Journal Article %J Journal of Geophysical Research %D 2008 %T Ice-front variation and tidewater behavior on Helheim and Kangerdlugssuaq Glaciers, Greenland %A Ian Joughin %A I M Howat %A Alley, R.B. %A Ekstrom, G. %A Mark Fahnestock %A Moon, T. %A Nettles, M. %A Martin Truffer %A Tsai, V.C. %B Journal of Geophysical Research %V 113 %P F01004 %G eng %U http://www.agu.org/pubs/crossref/2008/2007JF000837.shtml