English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the diffusion of ocean waves by ice bodies much smaller than awavelength, such as pancakes and small ice floes. We argue that inhomogeneitiesin the ice cover at scales comparable to that of the wavelength significantlyincrease diffusion, producing a contribution to wave attenuation comparable towhat is observed in the field and usually explained by viscous effects. Theresulting attenuation spectrum is characterized by a peak at the scale of theinhomogeneities in the ice cover, which could explain the rollover of theattenuation profile at small wavelengths observed in field experiments. Theproposed attenuation mechanism leads to the same behaviors that would beproduced by a viscous wave model with effective viscosity linearly dependent onthe ice thickness. This may explain recent findings that viscous wave modelsrequire a thickness-dependent viscosity to fit experimental attenuation data.Experimental validation is carried out using wave buoy attenuation data andsynthetic aperture radar image analysis.

Diffusion of gravity waves by random space inhomogeneities in pancake-ice fields. Theory and validation with wave buoys and synthetic aperture radar