Identification of gravity waves in hydrodynamical simulations

Details Identification of gravity waves in hydrodynamical simulations Identification of gravity waves in hydrodynamical simulations

2003-11-04

arxiv.org/abs/astro-ph/0311094v3

Astronomy and Astrophysics, 421, 775-782 (2004)

Astronomy and Astrophysics

Astrophysics

12 pages, 11 figures, Appendices only available online

Scientific paper

10.1051/0004-6361:20035606

The excitation of internal gravity waves by an entropy bubble oscillating in an isothermal atmosphere is investigated using direct two-dimensional numerical simulations. The oscillation field is measured by a projection of the simulated velocity field onto the anelastic solutions of the linear eigenvalue problem for the perturbations. This facilitates a quantitative study of both the spectrum and the amplitudes of excited g-modes.

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