Gleissberg cycle

Gleissberg cycle

[′glīs‚bərg ‚sī·kəl]
(astronomy)
An 80-year cycle in the amplitude of the 11-year sunspot cycle.
References in periodicals archive ?
Among specific topics are minima of the Centennial Gleissberg Cycle and the heliospheric boundary, characteristics of magnetic flux ropes from the sun to the heliosphere, electron acceleration and spectral hardening of continuum emission in solar flares, Voyager 1 measurements and theoretical modeling of magnetized plasma near the heliopause, and analyses of the evolution and interaction of multiple coronal mass ejections and their shocks in July 2012.
Perhaps the solar cycle tapers every 100 years or so in what's known as the Gleissberg Cycle.