Scaling in Fracture and Refreezing of Sea Ice

Details Scaling in Fracture and Refreezing of Sea Ice Scaling in Fracture and Refreezing of Sea Ice

2003-09-19

arxiv.org/abs/cond-mat/0309447v1

Physica A 331, 291 (2004)

Physics

Condensed Matter

Statistical Mechanics

Physica A (in press)

Scientific paper

10.1016/S0378-4371(03)00627-7

Sea ice breaks up and regenerates rapidly during winter conditions in the Arctic. Analyzing satellite data from the Kara Sea, we find that the average ice floe size depends on weather conditions. Nevertheless, the frequency of floes of size $A$ is a power law, $N\sim A^{-\tau}$, where $\tau=1.6\pm 0.2$, for $A$ less than approximately 100 $km^2$. This scale-invariant behaviour suggests a competition between fracture due to strains in the ice field and refreezing of the fractures. A cellular model for this process gives results consistent with observations.

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