Seminars & Colloquia Calendar

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Mathematical Physics Seminar

Homogenization in the physics and biology of sea ice

Kenneth Golden - University of Utah

Location:  Hill Center Room 705
Date & time: Thursday, 07 April 2022 at 2:30PM - 3:30PM

Abstract : As a material sea ice is a composite of pure ice with brine inclusions, while the sea ice cover itself is a granular composite of ice floes in a sea water host. In modeling the role of sea ice in the climate system and as a critical habitat in the polar marine ecosystem, finding the effective or homogenized properties of sea ice is a central issue. Monitoring the polar marine environment with remote sensing and other techniques often involves inverse homogenization to recover microstructural information from bulk property measurements. I will discuss a range of problems involving forward and inverse homogenization for sea ice and other composites, as well as the interplay between the physics and biology, particularly for microbial communities living in the brine microstructure. Some mathematical tools that have helped us recently in these modeling efforts include percolation theory, Ising models, random matrix theory, uncertainty quantification, and topological data analysis.

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