Abstract
I suggest that the exploding granule phenomenon is a consequence of the observed internal granular motions and the conservation of angular momentum. When a granule rising from the convection zone penetrates into the overlying stable region it is stretched out horizontally. Conservation of angular momentum in the internal motions changes its form into a vortex ring. A time sequence of photographs showing an exploding solar granule is described. The proposed mechanism is illustrated by a laboratory simulation and a numerical calculation.
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References
Beckers, J. M. and Morrison, R. A.: 1970, Solar Phys. 14, 280.
Carlier, A., Chauveau, F., Hugon, H., and Rösch, J.: 1968, Compt. Rend. 266, 199.
Dunn, R. B.: 1964, Appl. Opt. 3, 1357.
Dunn, R. B.: 1969, Sky Telesc. 38, 368.
Dunn, R. B.: 1971, in K. B. Gebbie (ed.), The Menzel Symposium on Solar Physics, Atomic Spectra, and Gaseous Nebulae, National Bureau of Standards Special Publication 353, p. 71.
Fox, L.: 1957, The Numerical Solution of Two-Point Boundary Problems in Ordinary Differential Equations, Clarendon Press, Oxford.
Matsuno, T.: 1966, J. Meteorol. Soc. Japan 44, 76.
Saunders, P. M.: 1962, Tellus 14, 177.
Scorer, R. S.: 1957, J. Fluid Mech. 2, 583.
Turner, J. S.: 1969, in W. R. Sears and M. van Dyke (eds.), Annual Review of Fluid Mechanics 1, Annual Reviews, Inc., Palo Alto, p. 29.
Woodward, B.: 1959, Quart. J. Roy. Meteorol. Soc. 85, 144.
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Musman, S. A mechanism for the exploding granule phenomenon. Sol Phys 26, 290–298 (1972). https://doi.org/10.1007/BF00165270
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DOI: https://doi.org/10.1007/BF00165270