Well-posedness Properties for a Stochastic Rotating Shallow Water Model

Abstract: The rotating shallow water (RSW) equations describe the evolution of a compressible rotating fluid below a free surface. The typical vertical length scale is assumed to be much smaller than the horizontal one, hence the shallow aspect. The RSW equations are a simplification of the primitive equations which are the equations of choice for modelling atmospheric and oceanic dynamics. In this talk, I will present some well-posedness properties of a viscous rotating shallow water system. The system is stochastically perturbed in such a way that two key properties of its deterministic counterpart are preserved. First, it retains the characterisation of its dynamics as the critical path of a variational problem. In this case, the corresponding action function is stochastically perturbed. Secondly, it satisfies the classical Kelvin circulation theorem. The introduction of stochasticity replaces the effects of the unresolved scales. The stochastic RSW equations are shown to admit a unique maximal strong solution in a suitably chosen Sobolev space which depends continuously on the initial datum. The maximal stopping time up to which the solution exist is shown to be strictly positive and, for sufficiently small initial datum, the solution is shown global in time with positive probability. This is joint work with Dr Oana Lang (Imperial College London).

analysis of PDEsprobability

Audience: researchers in the discipline

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Stochastic PDEs and their friends

Series comments: We are organizing a three day online workshop devoted to recent developments in SPDEs and related topics. Please complete the registration form at forms.gle/G9Xw942iVNNgB4SLA if you would like to take part in the conference.

Confirmed speakers:

Yuri BAKHTIN (NYU)

Ajay CHANDRA (Imperial)

Dan CRISAN (Imperial)

Nina HOLDEN (ETH Zurich)

Kostantin KHANIN (U Toronto)

Davar KHOSHNEVISAN (University of Utah)

Nicolai KRYLOV (University of Minnesota)

Jonathan MATTINGLY (Duke)

Leonid MYTNIK (Technion)

Nicolas PERKOWSKI (Free U Berlin)

Ellen POWELL (Durham University)

Jeremy QUASTEL (U Toronto)

Daniel REMENIK (Universidad de Chile)

Armen SHIRIKYAN (University of Cergy-Pontoise)

Gigliola STAFFILANI (MIT)

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