Those of us who study solar physics actually view the 11 years as half of
the 22 years it takes for the magnetic cycle to complete.
A peak or minimum is not a complete cycle.
73
Leroy AB7CE
-----Original Message-----
From: Dauer, Edward
Sent: Saturday, July 21, 2018 4:47 PM
To: [email protected]
Subject: [Elecraft] Sunspots - More patience required . . .
This month’s Scientific American has an interesting one-page article on
sunspots. The 11-year cycle (the Schwabe cycle) is the one we tend to focus
on, but there are 88 year cycles (the Gleissberg), occasional 200 year peaks
(Suess-DeVries), and a 2,400 year (Hallstatt) cycle as well. The longer
cycles look like modulation envelopes with the shorter cycles constrained
within them.
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