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Scaling in fracture and refreezing of sea ice

✍ Scribed by R. Korsnes; S.R. Souza; R. Donangelo; A. Hansen; M. Paczuski; K. Sneppen

Book ID
104340986
Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
308 KB
Volume
331
Category
Article
ISSN
0378-4371

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✦ Synopsis

Sea ice breaks up and regenerates rapidly during winter conditions in the Arctic. Analyzing satellite data from the Kara Sea, we ÿnd that the average ice oe size depends on weather conditions. Nevertheless, the frequency of oes of size A is a power law, N ∼ A -, where = 1:6 ± 0:2, for A less than approximately 100 km 2 . This scale-invariant behavior suggests a competition between fracture due to strains in the ice ÿeld and refreezing of the fractures. A cellular model for this process gives results consistent with observations.

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