《《A method for observing compression in sea ice fields using IceCam》.pdf

《《A method for observing compression in sea ice fields using IceCam》.pdf

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《《A method for observing compression in sea ice fields using IceCam》.pdf

Cold Regions Science and Technology 59 (2009) 65–77 Contents lists available at ScienceDirect Cold Regions Science and Technology journal homepage: www. elsevi /locate/coldregions A method for observing compression in sea ice fields using IceCam a,⁎ a,1 b,2 b,2 b,2 Hanna Leisti , Kaj Riska , Istvan Heiler , Patrick Eriksson , Jari Haapala a ILS Oy, Finland b Finnish Institute of Marine Research, Finland a r t i c l e i n f o a b s t r a c t Article history: An in-situ method to observe sea ice compression in the Baltic Sea is introduced. It is known that the sea ice Received 9 September 2008 pressure can cause severe damage to the ships in the Baltic Sea, and therefore reliable method to observe the Accepted 20 June 2009 compression situations is needed. IceCam, which is developed to collect visual and environmental data, was installed onboard in the icebreaker Otso on the 2nd of February 2006. The camera was observing ice motion Keywords: in the channel, created by the ship, taking one picture per minute. The camera was functional till the 9th of Ice dynamics May 2006. In total 137,436 pictures with satisfactory resolution were saved. Icebreaker Convergent ice field The analysis of the ice motion behind the icebreaker was d

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