Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Succession of resonances to achieve internal wave turbulence   We study experimentally the interaction of nonlinear internal waves in a
stratified fluid confined in a trapezoidal tank. The set-up has been designed
to produce internal wave turbulence from monochromatic and polychromatic
forcing through three processes. The first is a linear transfer in wavelength
obtained by wave reflection on inclined slopes, leading to an internal wave
attractor which has a broad wavenumber spectrum. Second is the broad banded
time-frequency spectrum of the trapezoidal geometry, as shown by the impulse
response of the system. The third one is a nonlinear transfer in frequencies
and wavevectors via triadic interactions, which results at large forcing
amplitudes in a power law decay of the wavenumber power spectrum. This first
experimental spectrum of internal wave turbulence displays a $k^{-3}$ behavior.

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The categories of this paper are: chem-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg