Atmosphere Ocean Science Friday Seminar

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Anomalous Diffusion in Sea Ice Dynamics

Speaker: Huy Dinh, CAOS

Location: Online

Date: Friday, March 5, 2021, 4 p.m.

Synopsis:

Temporal scaling rates of sea ice buoy trajectories, measured by the Hurst exponent, show diffusive, superdiffusive, and subdiffusive transport. Sparse floe configurations interact minimally leading to advection-dominated transport. As ice density increases, ice interactions begin to dominate advection. When floes become packed, floes become locked together. In this talk, we discuss reduced models which capture the essential transport features. In particular, we present a model of interacting discrete floes undergoing advection and a fractional diffusion model.