Solar Physics

, Volume 181, Issue 1, pp 237–249 | Cite as

An Active Sun Throughout the Maunder Minimum

  • Jürg Beer
  • Steven Tobias
  • Nigel Weiss
Article

Abstract

Measurements of 10Be concentration in the Dye 3 ice core show that magnetic cycles persisted throughout the Maunder Minimum, although the Sun's overall activity was drastically reduced and sunspots virtually disappeared. Thus the dates of maxima and minima can now be reliably estimated. Similar behaviour is shown by a nonlinear dynamo model, which predicts that, after a grand minimum, the Sun's toroidal field may switch from being antisymmetric to being symmetric about the equator. The presence of cyclic activity during the Maunder Minimum limits estimates of the solar contribution to climatic change.

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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Jürg Beer
    • 1
  • Steven Tobias
    • 2
  • Nigel Weiss
    • 3
  1. 1.EAWAGDübendorfSwitzerland
  2. 2.JILAUniversity of ColoradoBoulderU.S.A.
  3. 3.DAMTPUniversity of CambridgeCambridgeU.K.

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