Description: Eventful - Extreme Events in Rotating and Stratified Turbulent Flows (2020-2024)The project is mainly supported by a research grant by the French “Agence Nationale de la Recherche” (ANR-20-CE30-0011)
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It is in this context that we designed a project aiming at the investigation of an important, central phenomenon and its consequences on the dynamics and energetics of rotating stratified flows, the emergence of large-scale extreme events in velocity and temperature and associated instability patches, in a range of values of the governing parameters of geophysical interest (3,4,5). This is related to the creation of powerful vertical drafts intermittent in space and time, with sudden enhancements of the ver
Both experiments and numerical simulations of turbulent fluids show that energy dissipation exhibits intense localized (intermittent) fluctuations, giving rise to a characteristic behavior of quiescence interrupted by local bursts of high amplitude (3,4). In stratified flows as in the Earth’s atmosphere and in the oceans (2,11), as well as in the problem of mixing of a passive scalar in other geophysical and astrophysical flows,non-stationary energetic bursts develop also at scales comparable to that of the