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SUMMARY:SubZero: Sea Ice Modeling with an Explicit Representation of the F
 loe Life Cycle - Georgy Manucharyan (University of Washington)
DTSTART:20220922T153000Z
DTEND:20220922T160000Z
UID:TALK178280@talks.cam.ac.uk
DESCRIPTION:Sea ice dynamics span a wide range of scales and exhibit granu
 lar behavior as individual floes and fracture networks become evident at l
 ength scales O(10--100) km and smaller. Existing floe-scale sea ice models
  use bonded elements of predefined simple shapes like disks or tetrahedra 
 to represent more complex floe geometries. However\, floe-scale modeling r
 emains challenging due to difficulties reconciling discrete elements' idea
 lized nature with complex floe-scale observations. Our group has developed
  SubZero\, a conceptually new sea ice model geared to explicitly simulate 
 the lifecycles of individual floes by using complex discrete elements with
  time-evolving shapes. This unique model uses parameterizations of floe-sc
 ale processes\, such as collisions\, fractures\, ridging\, and welding\, t
 o bypass resolving intra-floe bonded elements. I will demonstrate the nove
 l capabilities of the SubZero sea ice model using idealized experiments\, 
 including the summer-time sea ice flow through the Nares Strait and a wint
 er-time equilibration of floe size and ice thickness distributions. SubZer
 o could provide a valuable alternative to existing discrete element and co
 ntinuous sea ice models for simulations of floe interactions.
LOCATION:Seminar Room 1\, Newton Institute
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