1. Detection of SST fronts and rings (maximum gradients) in the presence of noise with a variety of spatial scales;

  2. Characterization of rings or eddies by shape, frequency, and motion in a series of images or from a series of line samples, which may lead to aliasing of the feature motion;

  3. Characterization of the evolution of ice floes and leads, using a time series of images. The emphasis is on inference of the dynamics of the field from the feature evolution and statistics; and

  4. Estimation of oceanic velocity using a time series of tracer fields, where the relationship between the velocity field and the tracer is not unique and the velocity field is subject to some dynamical constraints.

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