@article {Joughin2012, title = {{Seasonal to decadal scale variations in the surface velocity of Jakobshavn Isbrae, Greenland: Observation and model-based analysis}}, journal = {J. Geophys. Res.}, volume = {117}, number = {F2}, year = {2012}, month = {may}, pages = {1{\textendash}20}, keywords = {glacier, glaciology, ice stream}, issn = {0148-0227}, doi = {10.1029/2011JF002110}, url = {http://www.agu.org/pubs/crossref/2012/2011JF002110.shtml}, author = {Joughin, Ian and Smith, B. E. and Howat, I. M. and Floricioiu, Dana and Alley, Richard B. and Truffer, M. and Fahnestock, M.A.} }