Greenland flow variability from ice-sheet-wide velocity mapping
University of Washington · Johns Hopkins University Applied Physics Laboratory · +3 more institutions
Abstract
Abstract Using RADARSAT synthetic aperture radar data, we have mapped the flow velocity over much of the Greenland ice sheet for the winters of 2000/01 and 2005/06. These maps provide a detailed view of the ice-sheet flow, including that of the hundreds of glaciers draining the interior. The focused patterns of flow at the coast suggest a strong influence of bedrock topography. Differences between our two maps confirm numerous early observations of accelerated outlet glacier flow as well as revealing previously unrecognized changes. The overall pattern is one of speed-up accompanied by terminus retreat, but there are also several instances of surge behavior and a few cases of glacier slowdown. Comprehensive…
Citation impact
- FWCI
- 34.42
- Percentile
- 100%
- References
- 66
Authors
5- IJIan JoughinCorresponding
University of Washington, Johns Hopkins University Applied Physics Laboratory
- BSBen Smith
University of Washington, Johns Hopkins University Applied Physics Laboratory
- IMIan M. Howat
The Ohio State University
- TAT. A. Scambos
Cooperative Institute for Research in Environmental Sciences, National Snow and Ice Data Center
- TMTwila Moon
University of Washington, Johns Hopkins University Applied Physics Laboratory
Topics & keywords
- Geology
- Glacier
- Ice stream
- Ice sheet
- Glacier morphology
- Bedrock
- Greenland ice sheet
- Surge
- Life below water