From: Alfio Puglisi (puglisi@arcetri.astro.it)
Date: Wed Sep 05 2001 - 06:50:52 MDT
On Tue, 4 Sep 2001, Mike Lorrey wrote:
>Damien Broderick wrote:
>> Nope. The solar cycle is bipolar, approximately 11 year flips; 22 years
>> brings you back to the start.
>
>Uh, I'm not sure about this. I was under the impression that the solar
>storm cycle was 11 years, while the magnetic field flipped every 22
>years.
>
Damien is right. The magnetic field flips every 11 years or so. This
length has been approximately constant in the last few hundreds years,
since astronomers started to keep track of it. There seem to be a lot of
other cycles superimposed, some shorter, some much longer. Anyway the
11-years one is the most evident.
Ciao,
Alfio
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