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SUMMARY:Small scale creation in active scalars - Alexander Kiselev (Duke U
 niversity)
DTSTART:20220215T133000Z
DTEND:20220215T143000Z
UID:TALK167351@talks.cam.ac.uk
DESCRIPTION:Active scalars appear in many situations in fluid mechanics\, 
 with the most classical example being 2D Euler equation in vorticity form.
  Other prominent examples are the surface quasi-geostrophic (SQG) equation
  that comes from atmospheric science and the incompressible porous media (
 IPM) equation modeling the fluid flow in porous media. In this talk\, I wi
 ll discuss rigorous examples of small scale formation that involves infini
 te in time growth of derivatives for the solutions of the SQG equation and
  the 2D IPM equation.
LOCATION:Seminar Room 1\, Newton Institute
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