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Wave-ice interactions

Wave-ice interactions. Given wave conditions outside the ice w aves are advected into the ice, and attenuated as well. is the attenuation coefficient depends on wave frequency, ice thickness and elastic properties ( Bennetts & Squire, 2012). a lso depends on concentration, and FSD.

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Wave-ice interactions

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  1. Wave-ice interactions • Given wave conditions outside the ice • waves are advected into the ice, and attenuated as well. • is the attenuation coefficient • depends on wave frequency, ice thickness and elastic properties (Bennetts & Squire, 2012). • also depends on concentration, and FSD.

  2. Wave-ice interactions • If waves are big enough, ice breakage occurs and FSD changes • this increases , so waves following cannot penetrate as far into the ice. • There will also be some effect on the ice rheology (response to wind and currents) • Shen et al. (1987) rheology accounts for binary collisions, where some energy is lost during each collision. • modelled ice becomes less viscous. • implemented (NERSC-HYCOM) but needs validation (few data). • also numerical issues near boundary with pack ice.

  3. Wave-ice interactions • Wave simulation20130918: 0000-0600. • Same time as WIFAR/UNDER-ICE cruise. • Wave data, some high-resolution SAR images are available. • WAM wave input from met.no (10km resolution). • Concentration from OSI-SAF (25-50km).

  4. Wave-ice interactions • Wave simulation20130918: 0600-1200. • Same time as WIFAR/UNDER-ICE cruise • Wave data, some high-resolution SAR images are available. • WAM wave input from met.no (10km resolution). • Concentration from OSI-SAF (25-50km).

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