Sorry, I never dealt with ice (even wisky drink with no ice).

But, seriously, I am afraid, that it is small-scale phenomenon, depending crucialy

on ice properties. 

Dear Fabrice, I am fascinated by your new modeling work. As a data analyst I can not help wondering if you might also planning some actual field measurement in support of your model development.  Anyway I don't know if you have seen the recent JGRO paper by Campbell, Bechle, and Wu entitled  "Observations of surface waves interacting with ice using stereo imaging", if not I think it can be relevant to your study. You can read or download the paper at Chin Wu's ResearchGate profile page, it's one of his featured publications.

Regards, Paul

Hi Fabrice,

Erick Rogers has been working on this. See the following conference proceeding:

http://www7320.nrlssc.navy.mil/pubs/2014/rogers1-2014.pdf

Also see:

Rogers, W. E. and S. S. Zieger (2014), Sice: Damping by sea ice, in User manual and system documentation of WAVEWATCH III(R) version 4.18b, , edited by H. L. Tolman, pp. 60-61, College Park, MD, Tech. Note, MMAB Contribution 316 NOAA/NWS.

Rogers, W. E. and M. D. Orzech (2013), Implementation and testing of ice and mud source functions in WAVEWATCH III®, in , NRL/MR/7320–13-9462.

Hope this helps.

-Tripp

Hi Clarence, I'm working with Erick on this ... he had different dissipation terms, including one due to friction below the ice ... but I am not aware that he included effect of plasticity in the ice.

Yes, the question is specifically about dissipation due to creep. Apparently this has not yet been addressed (that I know of), sorry I did not read more carefully.

Hi Fabrice,

Your question is not my specific area, but I thought it might be useful to point you towards Kohout et al., who have been working on elasticity and waves in sea ice. Try these refs:

Kohout et al. (2007) Linear water wave propagation through multiple floating elastic plates of variable properties, Journal of Fluids and Structures, 23(4);

Kohout and Meylan (2008) An elastic plate model for wave attenuation and ice floe breaking in the marginal ice zone, JGR, 113(C9);

Kohout et al. (2014) Storm-induced sea-ice breakup and the implications for ice extent, Nature, 509.

Hope that helps,

Natalie

http://www.sciencedirect.com/science/article/pii/S0889974606001332

http://onlinelibrary.wiley.com/doi/10.1029/2007JC004434/full

http://www.nature.com/nature/journal/v509/n7502/abs/nature13262.html

Thanks to all. I finally found an answer in Cole et al. (JGR 1998): "Cyclic loading and creep response of aligned first-year sea ice" which is generally consistent with Wadhams (JGR 1973), in proposing a reduced B coefficient for creep. This is now in version 5.10 of WAVEWATCH III (to be released in a few months) ... and was used for this paper:

https://www.researchgate.net/publication/294799613_Ocean_waves_across_the_Arctic_attenuation_due_to_dissipation_dominates_over_scattering_for_periods_longer_than_19_s

But yes it is in general a function of ice temperature and thickness and floe sizes are very important parameters too. 

Article Ocean waves across the Arctic: Attenuation due to dissipatio...