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Proceedings of the Estonian Academy of Sciences. Engineering

2007 Vol. 13, Issue 4 Vol. 13, Issue 3 Vol. 13, Issue 2 Vol. 13, Issue 1 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995

Open Access Journal

On the relationship between sea ice deformation and ship damages in the Gulf of Finland in winter 2003

PDF | https://doi.org/10.3176/eng.2007.3.03

Authors

Ove Pärn, Jari Haapala, Tarmo Kõuts, Jüri Elken, Kaj Riska

Abstract

Sea ice ridges and other types of deformed ice are the main obstacles for the winter navigation. During the severe winter 2002/2003, about 60% of the ship hull damages, registered in the Baltic Sea, occurred in the Gulf of Finland. We have analysed ice deformation features, derived from the HELMI sea ice model in relation to two ship damages that occurred in the Gulf of Finland this winter. The damages happened close to the high growth rate area of deformed ice at the interface of different ice conditions with notable ice thickness gradients. It is concluded that the rate of ridged ice production is an indicator of the compression of the ice pack and a potential indicator of ice-induced danger to shipping.

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