Has turbulent granular decay been observed?

Details Has turbulent granular decay been observed? Has turbulent granular decay been observed?

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...204..301d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 204, no. 1-2, Oct. 1988, p. 301-305.

Astronomy and Astrophysics

Astrophysics

19

Line Spectra, Magnetohydrodynamic Turbulence, Photosphere, Solar Granulation, Convection Currents, Gravity Waves, High Resolution, Radiative Heat Transfer

Scientific paper

Spatial wavenumber spectra of velocity and brightness fluctuations in solar photospheric spectral lines have been studied with particular attention to the range of spatial scales from 1arcsec.5 to 0arcsec.8, where the coherence of the spectra drops significantly. The author has found good coherence of brightness and outward velocity in the low photosphere to k-values of at least 8 Mm-1. At higher wavenumbers, the fluctuations are still correlated and an evidence of turbulent motions is not seen. Loss of coherence at high wavenumbers is likely to be caused by internal gravity waves.

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