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Re: Solar Activity Report for 4/20/02

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  • fredwx
    I found this page with Geomagnetic Activity Index for Tromsø: http://www.tgo.uit.no/2actix/ At first glance I did not see any correlation. What do you think?
    Message 1 of 7 , Apr 23, 2002
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      I found this page with Geomagnetic Activity Index for Tromsø:
      http://www.tgo.uit.no/2actix/

      At first glance I did not see any correlation. What do you think?

      Fred


      --- In methanehydrateclub@y..., "b1blancer_29501" <b1blancer1@e...>
      wrote:
      > --- In methanehydrateclub@y..., fredwx <no_reply@y...> wrote:
      > > Pawnfart & I have been watching the daily SOI numbers and I would
      > > like to add to the table/chart of SOI some sort of Solar Activity
      > > index and see what corolation there is. What number do you
      suggest
      > > and do you have a table of daily activity I could use?
      >
      > Hmmmm, good question, Fred. The best measure of overall solar
      > activity is the SFI, or solar flux index. It is a measure of solar
      > output on the 10.7 cm band, I believe. It ussually correlates
      fairly
      > closely to the sunspot number. More sunspots means at least the
      > potential for more flares. However, one of the strongest flares
      ever
      > recorded happened near the bottom of a sunspot cycle, when there
      were
      > very few sunspots.
      >
      > If it is flares in particular you're interested in, I can't think of
      > any other method than checking these two websites every day and just
      > keeping count.
      >
      > http://www.spaceweather.com/
      > http://dx.qsl.net/propagation/
      >
      > The first one will give you the strongest flare in the last 24
      hours,
      > while the second one will give you all the significant flares (M-1
      and
      > higher) that have happened in the last 3 days. It also haas an X-
      ray
      > flux graph which is updated every 5 minutes with data from the GOES
      8
      > and GOES 10 satellites. Flares are measured on the basis of their
      > X-ray flux intensity.
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