Long-term variations in meridional flows

Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/5201

Title:	Long-term variations in meridional flows
Authors:	Javaraiah, J
Issue Date:	2010
Publisher:	Springer
Citation:	Hasan, S. S and Rutten, R. T., eds., Magnetic coupling between the interior and atmosphere of the Sun, Proceedings of the conference "Centenary commemoration of the discovery of the Evershed effect" Dec, 2 - 5, 2008, Indian Institute of Astrophysics, Bangalore, India, pp. 361 – 363
Series/Report no.:	Astrophysics and Space Science Proceedings;
Abstract:	Using sunspot group data from Greenwich and from the Solar Optical Observation Network during 1879–2008, we find that the mean meridional motion of the observed spot groups varies considerably on a time scale of about 10–20 years. During the current cycle 23, which is anomalous in the sense that the cycle pair 22 and 23 violated the Gnevyshev and Ohl rule, the mean meridional speed of the spot groups is substantially higher than it was during the last 10–11 cycles. We also find a roughly 18-year periodicity in the mean meridional motion of spot groups in the northern hemisphere, and a roughly 25-year periodicity in the north–south asymmetry of the mean meridional motion.
Description:	Restricted Access The original publication is available at springerlink.com
URI:	http://hdl.handle.net/2248/5201
ISBN:	978-3-642-02858-8
Appears in Collections:	IIAP Publications

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