Solar Physics

, Volume 181, Issue 1, pp 237–249

An Active Sun Throughout the Maunder Minimum

Authors

  • Jürg Beer
    • EAWAG
  • Steven Tobias
    • JILAUniversity of Colorado
  • Nigel Weiss
    • DAMTPUniversity of Cambridge
Article

DOI: 10.1023/A:1005026001784

Cite this article as:
Beer, J., Tobias, S. & Weiss, N. Solar Physics (1998) 181: 237. doi:10.1023/A:1005026001784

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.

Copyright information

© Kluwer Academic Publishers 1998