G2 Geomagnetic Storm 27th September 2022

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Carbon60
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G2 Geomagnetic Storm 27th September 2022

Post by Carbon60 »

After a period of relative quiet in recent days my magnetometer burst into life overnight here in the UK with the arrival of an unexpected G2 geomagnetic storm. Here are my high cadence data recorded once per second, which show the rapid fluctuations in magnetic declination recorded during the event. This is presented as declination as opposed to my usual 'rate of change' because these were taken at a high sampling rate making comparisons with previous charts with a lower sampling rate (1 per 150 seconds) meaningless.
20220927_G2 Geomagnetic Storm.jpg
20220927_G2 Geomagnetic Storm.jpg (128.15 KiB) Viewed 1127 times
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: G2 Geomagnetic Storm 27th September 2022

Post by Montana »

Thanks Stuart :hamster:

Is there any reason you have changed the data sampling rate?

Alexandra


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Carbon60
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Re: G2 Geomagnetic Storm 27th September 2022

Post by Carbon60 »

Montana wrote: Tue Sep 27, 2022 10:25 am Thanks Stuart :hamster:

Is there any reason you have changed the data sampling rate?

Alexandra
Hi Alexandra,
I record at both sampling rates concurrently, but generally only plot the slower rate (fewer data points, quicker and easier). The slower rate is usually sufficient to capture the changes. On this occasion I decided to plot the high sampling rate data simply because I could see there were unusually rapid fluctuations in the geomagnetic record and I wanted to show these in detail.

I’ll plot the slower chart to show the difference.

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: G2 Geomagnetic Storm 27th September 2022

Post by Carbon60 »

1s cadence vs 150s cadence magnetometer data capture.
20220927_G2 Geomagnetic Storm_fast_slow.jpg
20220927_G2 Geomagnetic Storm_fast_slow.jpg (278.88 KiB) Viewed 1111 times
Lots more fine structure in the high rate captures.

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: G2 Geomagnetic Storm 27th September 2022

Post by rsfoto »

Hi Stuart,

WOW, that was a good one.


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
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Re: G2 Geomagnetic Storm 27th September 2022

Post by marktownley »

A good record of the event Douglas!


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