Read e-book online Drift, Deformation, and Fracture of Sea Ice: A Perspective PDF

By Jerome Weiss

Sea ice is an enormous section of polar environments, specially within the Arctic the place it covers the full Arctic Ocean all through lots of the yr. even if, within the context of weather switch, the Arctic sea ice disguise has been declining considerably over the past a long time, both by way of its focus or thickness. the ocean ice conceal evolution and weather swap are strongly coupled in the course of the albedo optimistic suggestions, therefore almost certainly explaining the Arctic amplification of weather warming. as well as thermodynamics, sea ice kinematics (drift, deformation) looks as an important consider the evolution of the ice conceal via a discount of the common ice age (and as a result of the cover's thickness), or ice export out of the Arctic. this can be a first motivation for a greater figuring out of the kinematical and mechanical methods of sea ice. A extra upstream, theoretical motivation is a greater realizing of the brittle deformation of geophysical gadgets throughout a variety of scales. certainly, as a result of its very powerful kinematics, in comparison e.g. to the Earth’s crust, an unequalled kinematical information set is obtainable for sea ice from in situ (e.g. drifting buoys) or satellite tv for pc observations. the following, we evaluation the hot advances within the figuring out of sea ice waft, deformation and fracturing received from those information. We concentration quite at the scaling homes in time and scale that symbolize those techniques, and we emphasize the analogies that may be drawn from the deformation of the Earth’s crust. those scaling homes, that are the signature of long-range elastic interactions in the disguise, constrain destiny advancements within the modeling of sea ice mechanics. We additionally express that kinematical and rheological variables akin to general speed, common strain-rate or energy have considerably replaced during the last a long time, accompanying and really accelerating the Arctic sea ice decline.

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Drift, Deformation, and Fracture of Sea Ice: A Perspective Across Scales (SpringerBriefs in Earth Sciences) by Jerome Weiss

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