On 2/7/22 12:46 PM, Kevin Rowett wrote:
Interesting data…


Can someone put the disturbance in perspective?  How much would this affect 
navigation, or timing, and how large (or small) is this disturbance in 
magnitude as compared to other events (CMEs?).

looks like a small single digit variation in TECU.

Compare to CMEs which look more like ~10 of TECU variation


https://angeo.copernicus.org/preprints/angeo-2019-39/angeo-2019-39.pdf

https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2008RS004029

It's not clear on a cursory reading of the above whether the change is due to the UV or the particles.

I'll ask the JPLer who did the analysis, if I can figure out who did it. They're not credited in the news release.


KR, K6TD


On Feb 7, 2022, at 11:43 AM, John Moran, Scawby Design 
<j...@scawbydesign.co.uk> wrote:

Someone suggested this a while ago, this may be of interest -

https://phys.org/news/2022-02-tonga-eruption-ripples-earth-ionosphere.html

John
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