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Hindcasting iceberg drift using current profiles and winds
AbstractA dynamic model that hindcasts iceberg drift trajectories under the influence of wind and current drag and Coriolis forcing is tested with data on winds, current profiles, and iceberg size and shape. Thirteen drift track data sets have been compiled at 10 minute intervals for periods of 11 to 73 hours. Icebergs were tracked by radar range and bearing to a ship positioned by LORAN C. Sonar profiles and photographs were analysed to estimate iceberg mass and cross-sectional areas below and above water. Current profiles were continuously monitored by an acoustic Doppler current profiler, and winds by an anemometer on a bow mast. Using these data, the model is able to accurately hindcast iceberg tracks. From sensitivity tests of the relative importance of various terms in the force balance of the model, data needs for forecasts are inferred.
Hindcasting iceberg drift using current profiles and winds
AbstractA dynamic model that hindcasts iceberg drift trajectories under the influence of wind and current drag and Coriolis forcing is tested with data on winds, current profiles, and iceberg size and shape. Thirteen drift track data sets have been compiled at 10 minute intervals for periods of 11 to 73 hours. Icebergs were tracked by radar range and bearing to a ship positioned by LORAN C. Sonar profiles and photographs were analysed to estimate iceberg mass and cross-sectional areas below and above water. Current profiles were continuously monitored by an acoustic Doppler current profiler, and winds by an anemometer on a bow mast. Using these data, the model is able to accurately hindcast iceberg tracks. From sensitivity tests of the relative importance of various terms in the force balance of the model, data needs for forecasts are inferred.
Hindcasting iceberg drift using current profiles and winds
Smith, Stuart D. (author)
Cold Regions, Science and Technology ; 22 ; 33-45
1993-02-14
13 pages
Article (Journal)
Electronic Resource
English
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