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SUMMARY:Boundary layer turbulence below ice shelves in the shear-dominated
  regime - Carolyn Begeman (Los Alamos National Laboratory)
DTSTART:20220406T140000Z
DTEND:20220406T150000Z
UID:TALK171263@talks.cam.ac.uk
CONTACT:Dr. Shenjie Zhou
DESCRIPTION:Large-eddy simulations have been a fruitful tool for studying 
 ocean turbulence in the ice ocean boundary layer of sea ice and ice shelve
 s. In this study\, we used large-eddy simulations to examine the ice-shelf
  ocean boundary layer in a regime in which shear controls the rate of melt
 ing\, modulated by stable stratification. Here\, I focus on the turbulence
  characteristics\, boundary layer structure\, and melt rate as thermal dri
 ving and ice-shelf basal slope vary.  I consider commonly-used parameteriz
 ations of ice-shelf melting and show that the melt rate scales approximate
 ly linearly with thermal driving\, as parameterized\, but mixing efficienc
 y increases with basal slope\, which is not parameterized.  I close with s
 ome perspectives on using coarse-resolution models for ice-shelf melt proj
 ections.
LOCATION:https://ukri.zoom.us/j/99471476617\;BAS seminar room 330b
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