2015-07-102015-07-102001http://hdl.handle.net/11441/26764Uniqueness of solution for the Primitive Equations with Dirichlet conditions on the bottom is an open problem even in 2D domains. In this work we prove a result of additional regularity for a weak solution v for the Primitive Equations when we replace Dirichlet boundary conditions by friction conditions. This allows to obtain uniqueness of weak solution global in time, for such a system [3]. Indeed, we show weak regularity for the vertical derivative of the solution, ∂zv for all time. This is because this derivative verifies a linear pde of convection-diffusion type with convection velocity v, and the pressure belongs to a L 2 -space in time with values in a weighted space.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Boundary conditions of type Navier2D Primitive EquationsUniquenessUniqueness of solution for the 2D Primitive Equations with friction condition on the bottominfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess