The intermittent solar cycle
作者:
N. Platt,
E.A. Spiegel,
C. Tresser,
期刊:
Geophysical & Astrophysical Fluid Dynamics
(Taylor Available online 1993)
卷期:
Volume 73,
issue 1-4
页码: 147-161
ISSN:0309-1929
年代: 1993
DOI:10.1080/03091929308203626
出版商: Taylor & Francis Group
关键词: Intermittency;chaos;solar cycle
数据来源: Taylor
摘要:
A prominent feature of the solar cycle is the rise and fall of the number of sunspots on the surface with a timescale of approximately eleven years. The mathematical description of this behavior is complicated by the interruption of the cycle for 75 years starting around 1650. Similar previous intermissions of this kind are implied by the available data. We explore the possibility of modeling such temporal variations of the sunspot number with a deterministic dynamical system of relatively low order. The system we propose manifests on/off intermittency in which the cyclic variations of the solar activity switch off almost completely for extended periods. We also offer an explanation of the variation of the fluctuating part of the sunspot number over the cycle.
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