Sea Ice Cover Deformation on the Local Scale and Mesoscale and Its Relationship to Atmosphere-Ocean Processes ...

• Main Author: Aksenov, Yevgeny
• Format: Thesis
• Language: English
• Published: Apollo - University of Cambridge Repository 2002
• Subjects: Sea ice cover deformation; Ocean processes; Atmosphere processes; Arctic; Baltic Sea; Sea ice
• Online Access: https://dx.doi.org/10.17863/cam.79283; https://www.repository.cam.ac.uk/handle/1810/331834

This thesis is concerned with the study of sea ice cover deformation caused by the processes in the atmosphere and ocean. Only a modest number of studies has addressed the cross-scale analysis of the ice deformation. The aim of the present research has two foci: to investigate the variability of ice deformations and identify mechanisms responsible for their generation, and to explore the relationships of the ice deformation in the range of spatial scales. Two types of ice, the multi-year pack ice in the central Arctic and the seasonal ice in the northern Baltic Sea, are studied. The research includes a field experiment, observation analysis and modelling. Stresses in the ice generated by non-uniform drift of ice, ocean waves, and ice deformation due to variations in the ambient air temperature are considered. To separate thermal and motion induced deformation on the floe scale a thermo-mechanical non-linear viscous-elastic model has been developed. The results from these simulations are compared with the ...