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Prediction of an Iceberg Drift Trajectory During a Storm

  • D. S. Sodhi (a1) and Mona El-Tahan (a1)

Abstract

A numerical model is presented for predicting iceberg drift trajectories from known or derived information regarding iceberg characteristics and the environmental forces affecting the motion of an iceberg. The validity of such a model is studied by comparing predicted and observed trajectories of icebergs near Saglek, Labrador, during a storm on 21–22 August. 1972. At this time, iceberg positions (determined by radar), winds, and currents were monitored as part of an oceanographic study, conducted by the Faculty of Engineering and Applied Science, Memorial University of Newfoundland. The comparison between observed and predicted iceberg drift trajectories is good when the characteristics of the iceberg are assumed to be those of a mediumsized non-tabular iceberg. In order to appreciate the effect of wind and current forces on the drift of the iceberg, several trajectories arc plotted in which various environmental forces are excluded. From this study, it is evident that a good prediction of an iceberg drift trajectory is only possible if rather detailed information is available on the current and wind field.

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Copyright

References

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Allen, J H and others 1973 Iceberg study, Saglek, Labrador, including cruise report C.S.S. Dawson, August 7 to August 26, 1972. Memorial University of Newfoundland. Faculty of Engineering and Applied Science. Report
Bayly, I M 1971 Contribution on the inclusion of certain terms in the equations used in the simulation for the prediction of ice movement by Dr. O. Cochkanoff et al. In Proceedings of the Canadian seminar on icebergs, Halifax, Nova Scotia, 1971. Ottawa, Dept of National Defence: 153155
Cochkanoff, O, Graham, J W, Warner, J L 1971 Simulation techniques in the prediction of iceberg motion. In Proceedings of the Canadian seminar on icebergs, Halifax, Nova Scotia, 1971. Ottawa, Dept of National Defence: 135152
El-Tahan, M Unpublished Modelling of iceberg drift. M.Eng. thesis, Memorial University of Newfoundland, Faculty of Engineering and Applied Science, 1980
Holden, B J Unpublished Some observations on the Labrador Current at Saglek, Labrador. M.Eng. thesis, Memorial University of Newfoundland, Faculty of Engineering and Applied Science, 1974
Mountain, D 1980 On predicting iceberg drift. Cold Regions Science and Technology 1(3–4) : 273282
Murray, J E 1969 The drift, deterioration and distribution of icebergs in the North Atlantic Ocean. In Ice seminar … sponsored by the Petroleum Society of CIM, Calgary, Alberta, 1968. Montreal, Canadian Institute of Mining and Metallurgy: 318 (Special Volume 10)
Napoleoni, J G P Unpublished The dynamics of iceberg drift. M.Sc. thesis, University of British Columbia, Department of Geophysics and Astronomy, 1979
Neumann, G 1968 Ocean currents. Amsterdam, Elsevier

Prediction of an Iceberg Drift Trajectory During a Storm

  • D. S. Sodhi (a1) and Mona El-Tahan (a1)

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