2527Re: Solar Activity Report for 8/11/05
- Aug 21, 2005
> I asked that coronal hole question to a well regarded SEC solarEven a blank sun can have a coronal hole make an appearance, as we've
> expert years ago. She said she did not have the answer. Well if the
> aurora was not seen for decades in the northern latitudes during the
> Maunder minimum then the coronal holes had to have been absent
> during the lulls.
seen, so I'll assume they were around during the Maunder Minimum.
Then again, there was obviously something odd happening to suppress
the sunspots to such a degree for a long (from our perspective) period
of time, so who knows?
> Now I know you can have very low geomagnetic activity...like the
> latest ...with some fairly strong 700 km/sec winds but something odd
> would have to happen with the IMF-earth's magnetic field for us to
> have no high latitude storming everyone once in a while.
>I dunno, maybe. Or, the solar magnetic field could become really
> People may not have known what the northern lights actually wereback
> then but they were written about all the time. I have a book with
> historical sightings that goes back several centuries...with
> specific dates.. for the big ones
> Now if you believe like I have for quite some time and some recent
> papers are saying that the changes in the pole's polarities are
> related to the cyclical nature of their presence...espeically
> around maximum..when the poles reverse polarities (10/99-5/2000 C-
> hole one example) than this would make sense.
> I would imagine that the poles must get extremely weak...magnetic
> wise... or one pole completely dominates over the other and you
> almost just have one polarity.
convoluted with north and south poles popping up in all sorts of odd
places until it settles down into the new polarity.
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