HR: 0800h
AN: C11B-0443    [Abstracts]
TI: A one-dimensional, thermodynamic model for the consolidation of multiply rafted sea- ice
AU: Bailey, E
EM: eb@cpom.ucl.ac.uk
AF: Rock and Ice Physics Laboratory, Department of Earth Sciences, UCL, Gower Street, London, WC1E 6BT, United Kingdom
AU: * Feltham, D L
EM: dlf@cpom.ucl.ac.uk
AF: Centre for Polar Observation and Modelling, UCL, Gower Street, London, WC1E 6BT, United Kingdom
AU: * Feltham, D L
EM: dlf@cpom.ucl.ac.uk
AF: British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom
AU: Sammonds, P
EM: p.sammonds@ucl.ac.uk
AF: Rock and Ice Physics Laboratory, Department of Earth Sciences, UCL, Gower Street, London, WC1E 6BT, United Kingdom
AB: Rafting is an important process in the deformation of sea ice that occurs when two ice sheets collide, such that one sheet is overridden by another, resulting in a local doubling of the ice thickness. This phenomenon is particularly common in the Caspian Sea where multiple rafting can produce thick sea ice features that are a hazard to offshore operations. In this study a one-dimensional, numerical computer model is used to investigate the consolidation process of multiply rafted sea ice. We consider the consolidation of a saline liquid layer located between two identical ice sheets of uniform thickness, embedded within a multiply rafted section. Understanding this is of importance because the degree of consolidation will affect the strength of a rafted structure, which is of interest for mechanical sea ice models and engineers, who may need to incorporate the various strengths associated with rafted ice into the design loads for offshore structures and vessels.
DE: 0750 Sea ice (4540)
DE: 0766 Thermodynamics (1011, 3611, 8411)
DE: 0770 Properties
DE: 0798 Modeling
SC: Cryosphere [C]
MN: 2007 Fall Meeting