November magnetometry summary

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Carbon60
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November magnetometry summary

Post by Carbon60 » Sun Dec 04, 2016 7:36 pm

Coronal holes and fast flowing solar wind emanating from them over the month created periods of bright aurora as the Sun rotated, periodically sweeping the wind in our direction. The ebbs and flows were recorded on my magnetometer and are shown below as 'rate of change' over time.
November Summary.jpg
November Summary.jpg (281.67 KiB) Viewed 835 times
Generally we are seeing a reduction in solar activity in terms of sunspot numbers and on December 1st the interplanetary magnetic environment was particularly 'settled' between coronal holes. Just how quiet can be seen below and in comparison with a recent G3 storm in October plotted to the same scale.
20161201_Quiet Day.jpg
20161201_Quiet Day.jpg (112.59 KiB) Viewed 835 times
.......and a G3 solar storm
20161025_G3_Storm_Solar Wind.jpg
20161025_G3_Storm_Solar Wind.jpg (141.53 KiB) Viewed 835 times
Thanks for looking.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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marktownley
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Re: November magnetometry summary

Post by marktownley » Sun Dec 04, 2016 8:12 pm

That's quite a difference between quiet and active Stu! The coronal holes seem to opposite each other hemispherically given there's roughly a fortnight between them. Interesting data! :)
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Montana
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Re: November magnetometry summary

Post by Montana » Mon Dec 05, 2016 12:43 pm

Really nice data Stu :bow :hamster: these coronal holes seem to time themselves perfectly with periods of cloudy weather in the UK ;)
Alexandra

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Carbon60
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Re: November magnetometry summary

Post by Carbon60 » Mon Dec 05, 2016 9:57 pm

Many thanks Mark/Alexandra.

Even with clear skies and a decent G3 storm I still haven't seen the aurora from home! Mind you, my view north is really bad as it looks over in the direction of the adjacent town, so the sky is filled with light pollution and there are too many trees!

Good spot, Mark, approx. half a rotation apart.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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Re: November magnetometry summary

Post by highfnum » Mon Dec 05, 2016 10:02 pm

is a quiet day usually that flat?

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Carbon60
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Re: November magnetometry summary

Post by Carbon60 » Mon Dec 05, 2016 10:31 pm

highfnum wrote:is a quiet day usually that flat?
Hi John,

Don't forget the scale has been adjusted to match that of the G3 storm, so it looks particularly flat in this comparison.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/

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