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SUMMARY:Modelling water wave attenuation through random fields of ice floe
 s: Is scattering the answer? - Fabien Montiel (University of Otago)
DTSTART:20230323T150000Z
DTEND:20230323T153000Z
UID:TALK195727@talks.cam.ac.uk
DESCRIPTION:Scattering has long been hypothesized to be the dominant proce
 ss governing the attenuation of ocean waves in the marginal ice zone (MIZ)
  in conditions where the horizontal dimension of the constituent ice floes
  is similar to the wavelength. Increasingly advanced mathematical and nume
 rical models have been proposed in the last 4 decades to approximate the m
 ultiple scattering of cean waves through random arrays of floating ice flo
 es on increasingly large spatial scales. When comparing model predictions 
 to field observations\, however\, it seems scattering cannot explain many 
 of the empirically determined features\, especially the relationship betwe
 en the spatial rate of wave energy attenuation and wave period. In this ta
 lk\, I will go over some historical developments of linear multiple scatte
 ring theory as a model for ocean wave attenuation in the MIZ and present r
 ecent evidence suggesting that such models likely need to be enhanced with
  or replaced by parameterisations of non-linear dissipative processes in t
 he water waves/sea ice system.\nI'd like to acknowledge my collaborators o
 n this work\, especially Nico Mokus\, Dr Johannes Mosig\, A/P Luke Bennett
 s and Prof Vernon Squire.
LOCATION:Seminar Room 1\, Newton Institute
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