A large-scale meridional circulation in the convective zone

Ribes, E.; Mein, P.; Mangeney, A.

doi:10.1038/318170a0

Cited by 82 publications

(30 citation statements)

References 8 publications

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“…In the former case we should have latitudinal bands in either hemisphere having alternative twisting influences on the flux ropes. This would be a similar geometry to that of the giant rolls described by Ribes, Mein, and Mangeney (1985). However, no latitudinal distribution can be pointed out.…”

Section: Search For the Distribution Of The Sunspot Group Tiltsmentioning

confidence: 67%

“…(e) As far as the meridional rolls (Ribes, Mein, and Mangeney, 1985) are concerned, Glatzmaier (1987) notes that they are observed but they cannot be theoretically explained as yet, and at the same time the banana rolls seem to be well-established by theory, but they are not yet detected directly. He refers to a Spacelab experiment imitating similar geometry (Toomre, Hart, and Glatzmaier, 1987).…”

Section: Some Additional Remarksmentioning

confidence: 99%

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Study of possible subsurface influences on the emerging active regions

Baranyi

Ludmány²

1992

Sol Phys

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The large-scale distribution of the orientations of emerging sunspot groups has been studied for the year 1977. It is probable that the declinations from the azimuthal directions are not entirely randomly scattered, but they can be governed also by subsurface velocity fields. If this assumption is correct, the most probable internal velocity distribution is a non-axisymmetric (columnar) giant convection pattern with a longitudinal wave number l = 11 rotating slightly slower than the Carrington system, on the basis of the given material.

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Section: Search For the Distribution Of The Sunspot Group Tiltsmentioning

confidence: 67%

Section: Some Additional Remarksmentioning

confidence: 99%

Study of possible subsurface influences on the emerging active regions

Baranyi

Ludmány²

1992

Sol Phys

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“…The observational effect was first discovered by Howard and LaBonte (1981) on the photospheric rotation rate, and has been referred to as a torsional oscillation. Their finding was interpreted by Ribes et al (1985) and Ribes (1986), as a result of the Coriolis force which accelerates or decelerates the surface flow, in the vicinity of azimuthal convective rolls. The existence of azimuthal rolls has been inferred from a zonal meridional circulation pattern discovered by Ribes and Mein (1984).…”

Section: Methods and Resultsmentioning

confidence: 99%

Solar Rotation over Solar Cycle 21

Ribes

Vince²,

Mein

et al. 1991

International Astronomical Union Colloquium

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Having measured the rotation rate of sunspots through solar cycle 21, from 1977 to 1983, we have found that the mean differential rotation averaged over this seven year record is similar to the grand average differential rotation determined by over the period . However, the rotation rate does change from year to year. These changes are evidenced by a steepening or a flattening of the mean differential rotation profile, as well as significant changes in the equatorial rate. The presence of a time-dependent pattern of azimuthal rolls inferred from the meridional circulation pattern of the sunspots offers a qualitative explanation of the observed rotation rates. The amplitude of the changes is almost one order of magnitude larger than that of the torsional oscillations found by Howard and LaBonte (1981).

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“…They are moving poleward and each second or third year, a new polarity zone appears at low latitudes and begins its poleward motion ( Figure 5). Let us accept temporarily the suggestion of Ribes et al (1985) that the origin of these polarity zones is a series of azimuthal convective rolls formed at low latitude and moving poleward. That is the second and last piece of our framework.…”

Section: What Is Going On In the "Inside" Sun?mentioning

confidence: 99%

Dipole Field, Sunspot Cycle and Solar Dynamo

Simon

Legrand²

1993

Symp. - Int. Astron. Union

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A b s t r a c t . From the analysis of a series of data concerning phenomena taking place in the high corona, in the interplanetary medium and in the magnetosphere, we came to the conclusion that we have to take into consideration a two-component solar cycle in which, with a 5-6 yr delay, the cycle of the dipole component of the solar magnetic field and the following sunspot cycle are closely correlated. In order to show the new mechanisms to incorporate into a model of a two-component solar cycle, we discuss several other relevant solar data.

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A large-scale meridional circulation in the convective zone

Cited by 82 publications

References 8 publications

Study of possible subsurface influences on the emerging active regions

Study of possible subsurface influences on the emerging active regions

Solar Rotation over Solar Cycle 21

Dipole Field, Sunspot Cycle and Solar Dynamo

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