Laboratory observation of internal gravity wave turbulence in a three-dimensional large-scale facility

Understanding internal wave turbulence in stratified fluids could yield improved parameterizations of the fine scales in global oceanic models. As analytical works lead to diverse predictions, the observation of a developed internal wave turbulence in laboratory experiments constitutes a major milestone to achieve. In this article, we present observations of internal wave turbulence, performed in a large-scale, three-dimensional facility, allowing access to unprecedentedly clear power laws for the energy spectra. While most of our results are in line with the phenomenology of wave turbulence, it remains to be explored whether the energy spectra we report can be explained in this framework.