2017 Annual Geomagnetic Data- Updated

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Carbon60
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2017 Annual Geomagnetic Data- Updated

Post by Carbon60 »

Hi all,

I've pulled together all 193,000 data points collected over the year showing that even with a declining solar cycle there are still plenty of opportunities to view the aurora, primarily due to fast flowing solar wind arising from large coronal holes.
2017 Geomagnetic.jpg
2017 Geomagnetic.jpg (149.94 KiB) Viewed 4793 times
We'll see how 2018 pans out.

Thanks for looking.

Stu.
Last edited by Carbon60 on Sun Jan 21, 2018 11:29 am, edited 1 time in total.


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Re: 2017 Annual Geomagnetic Data

Post by Montana »

That looks a busy year but I would say that December looks a lot quieter than last January or February :( but then again it was quiet in June July too, so is that a decline in between the equinox activity?

Alexandra


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Re: 2017 Annual Geomagnetic Data

Post by Carbon60 »

Hi Alexandra,

Some further analysis confirms what you were thinking. A dip between equinoxes. It will be interesting to see if this repeats annually.
2017 Geomagnetic Events Count.jpg
2017 Geomagnetic Events Count.jpg (69.68 KiB) Viewed 4773 times
Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
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Re: 2017 Annual Geomagnetic Data

Post by marktownley »

Interesting data there Stu, thanks.


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Re: 2017 Annual Geomagnetic Data

Post by Carbon60 »

Thanks, Mark.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: 2017 Annual Geomagnetic Data

Post by p_zetner »

Beautiful work, Stu!

Cheers.
Peter.


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Re: 2017 Annual Geomagnetic Data

Post by Carbon60 »

Many thanks, Peter.

Much appreciated.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: 2017 Annual Geomagnetic Data

Post by Carbon60 »

I hope you find this interesting.

I've now plotted the data as a running average (5 days) to smooth out the peaks. I've also annotated and added SDO/AIA images to show where the geomagnetic activity originated, which turns out to be mostly coronal holes (CHs) and the ensuing fast flowing solar wind. There are a few CMEs in the mix, but these are relatively few in comparison.
2017 Geomagnetic Summary.jpg
2017 Geomagnetic Summary.jpg (143.68 KiB) Viewed 4672 times
It bodes well for aurora watchers in a declining solar cycle with fewer active regions, assuming that coronal holes persist throughout the cycle.

Thanks for looking.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: 2017 Annual Geomagnetic Data- Updated

Post by marktownley »

Excellent data Stu. I was saying at Liverpool Astro Society on friday evening that the significant majority of my Icelandic aurora observations over the years were a result of coronal holes apposed to CMEs. All makes sense really.


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Re: 2017 Annual Geomagnetic Data- Updated

Post by Carbon60 »

Very interesting, Mark.

I hope the talk went well.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: 2017 Annual Geomagnetic Data- Updated

Post by rsfoto »

Very interesting


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
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Re: 2017 Annual Geomagnetic Data- Updated

Post by Montana »

That's a nice presentation Stu :bow
Alexandra


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Re: 2017 Annual Geomagnetic Data- Updated

Post by highfnum »

lots of work
well done


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Re: 2017 Annual Geomagnetic Data- Updated

Post by Carbon60 »

Many thanks Rainer, Alexandra & John.


Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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