Solar activity in the past and the problem of solar dynamo

Details Solar activity in the past and the problem of solar dynamo Solar activity in the past and the problem of solar dynamo

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..128..217d&link_type=abstract

(IAU, The Inside the Sun Colloquium, 121st, Versailles, France, May 22-26, 1989) Solar Physics (ISSN 0038-0938), vol. 128, July

Physics

2

Dynamo Theory, Solar Activity, Solar Magnetic Field, Stellar Evolution, Sunspot Cycle, Carbon 14, Radioactive Age Determination, Stellar Models, Thermoluminescence

Scientific paper

A study is made of a new indirect index of the solar activity - the intensity of luminescence of the microzones of cave flowstones. This index is in anticorrelation with the index 'deposition rate of C-14' and in direct correlation with the solar activity as in thermoluminescent time series of sediment cores. Luminescence time series were obtained for long time intervals with different time resolution (from 5 years per pixel to 5 pixels per year). In such time series, the long minima of Maunder and Spoerer, the Medieval maximum, and other well known long lasting minima and maxima as well as some new ones can be seen. The very good resolution permits a study of the general statistical properties of past solar activity. Some of the results obtained refer to the problem of the mechanism of solar magnetic field generation.

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