Abstract
Lead in Arctic sea-ice is a discontinuity, along which Arctic sea-ice slips. The lead does not remain stationery but appears at a certain frequency and disappears after slip. The iteration of this process is called shuffle. We have derived a conclusion from our two dimensional ice-field model that variance of sea-ice location grows exponentially with magnitude and frequency in ice-field slip. In continuum model more widely used in climatic variability research, macroscopic velocity in ice field deformation is correlated with internal stress by the constitution law. This paper proposes two methods to correlate phenomena observed in ice field with continuum model. One considers only ice displacement rate on numerical grids regardless of any discontinuity in each cell of model. Another considers a lowpass-filterlike process, e.g. averaging in a numerical cell. The former model is suitable for eternal sea-ice zone, while latter for seasonal sea-ice zone, i.e. marginal sea-ice zone
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