Abstract
A method of two-dimensional correlation functions has been applied to a sequence of synoptic maps of the large-scale magnetic field to obtain the meridional drift pattern of field structures. The meridional drift profile obtained is antisymmetric about the equator. The meridional drift is directed from the equator to the poles at latitudes below 45°. A maximum drift velocity of 11–13 m s−1 is attained in the latitude range 30°. A picture of the space-time distribution of meridional drift is also obtained, which may be interpreted as resulting from the effect of azimuthal convective rolls (3 rolls per hemisphere) on the large-scale magnetic field. Rolls originate at high latitudes following the cycle maximum, and migrate equatorwards until the minimum of the next cycle. The picture in the equatorial region can correspond to convective rolls with lifetimes of about two years, or to the process of interaction of rolls from two hemispheres.
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References
Andersen, B. N.: 1987,Solar Phys. 114, 207.
Arévalo, M. J., Gomez, R., Vázquez, M., Balthasar, H., and Wöhl, H.: 1982,Astron. Astrophys. 111, 266.
Balthasar, H. and Wöhl, H.: 1980,Astron. Astrophys. 92, 111.
Beckers, J. M.: 1978,Proceedings Workshop on Solar Rotation, Publ. Catania No. 162, p. 166.
Bogart, R. S.: 1987,Solar Phys. 110, 23.
DeVore, C. R., Sheeley, N. R., and Boris, J. P.: 1984,Solar Phys. 92, 1.
Duvall, T. L.: 1979,Solar Phys. 63, 3.
Hanslmeier, A. and Lustig, G.: 1986,Astron. Astrophys. 154, 227.
Harvey, J. W., Howard, R. F., and Forgach, S.: 1989,Bull. Am. Astron. Soc. 21, 854.
Hoeksema, J. T., Herant, M., Scherrer, P. H., and Title, A. M.: 1987,Bull. Am. Astron. Soc. 19, 935.
Howard, R. and LaBonte, B. J.: 1980,Astrophys. J. 239, L33.
Howard, R. F., Harvey, J. W., and Forgach, S.: 1990,Solar Phys. 130, 295.
Howard, R. F., Kichatinov, L. L., Bogart, R. S., and Ribes, E.: 1991, in A. N. Cox, W. C. Livingston, and M. S. Matthews (eds.),Solar Interior and Atmosphere, University of Arizona Press, Tucson, p. 748.
Karabin, M. and Kubičela, A.: 1979,Publ. Astron. Obs. Belgrade 26, 157.
Kubičela, A. and Karabin, M.: 1977,Solar Phys. 52, 199.
LaBonte, B. J. and Howard, R.: 1982,Solar Phys. 80, 361.
Pérez Garde, M., Vázquez, M., Schwan, H., and Wöhl, H.: 1981,Astron. Astrophys. 93, 67.
Pierce, A. K. and LoPresto, J. C.: 1987,Bull. Am. Astron. Soc. 19, 935.
Ribes, E., Mein, P., and Mangeney, A.: 1985,Nature 318, 170.
Schröter, E. H.: 1985,Solar Phys. 100, 141.
Snodgrass, H. B.: 1984,Solar Phys. 94, 13.
Snodgrass, H. B.: 1987a,Solar Phys. 110, 35.
Snodgrass, H. B.: 1987b,Astrophys. J. 316, L91.
Stenflo, J. O. and Vogel, M.: 1986,Nature 319, 285.
Stenflo, J. O.: 1989,Astron. Astrophys. 210, 403.
Topka, K., Moore, R., LaBonte, B. J., and Howard, R.: 1982,Solar Phys. 79, 231.
Tuominen, J.: 1976,Solar Phys. 47, 541.
Tuominen, J., Tuominen, I. V., and Kyröläinen, J.: 1983,Monthly Notices Roy. Astron. Soc. 205, 691.
Ulrich, R. K., Boyden, J. E., Webster, L., Snodgrass, H., Padilla, S. P., Gilman, P., and Shieber, T.: 1988,Solar Phys. 117, 291.
Wilcox, J. M. and Howard, R.: 1970,Solar Phys. 13, 251.
Wilson, P. R.: 1987,Solar Phys. 110, 59.
Wöhl, H.: 1988,Solar Phys. 116, 199.
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Latushko, S. Meridional drift in the large-scale solar magnetic field pattern. Sol Phys 149, 231–241 (1994). https://doi.org/10.1007/BF00690611
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DOI: https://doi.org/10.1007/BF00690611