Regularity Criterion and Energy Conservation for the Supercritical Quasi-geostrophic Equation

@article{Dai2015RegularityCA,
  title={Regularity Criterion and Energy Conservation for the Supercritical Quasi-geostrophic Equation},
  author={Mimi Dai},
  journal={Journal of Mathematical Fluid Mechanics},
  year={2015},
  volume={19},
  pages={191-202}
}
  • Mimi Dai
  • Published 9 May 2015
  • Mathematics, Environmental Science
  • Journal of Mathematical Fluid Mechanics
This paper studies the regularity and energy conservation problems for the 2D supercritical quasi-geostrophic (SQG) equation. We apply an approach of splitting the dissipation wavenumber to obtain a new regularity condition which is weaker than all the Prodi–Serrin type regularity conditions. Moreover, we prove that any viscosity solution of the supercritical SQG in $$L^2(0,T; B^{1/2}_{2,c(\mathbb N)})$$L2(0,T;B2,c(N)1/2) satisfies energy equality. 
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