[Aavso-sid-list] Ionosphere Disturbance April 10 2009

Wed Apr 22 04:36:05 EDT 2009

On Wed, 22 Apr 2009, Len Anderson wrote:

> Interested if observers of  NWC 19.8 Khz or any other frquency  noted on 
> April10 the sunrise effect followed approx one hour later wih the same 
> trace pattern as the  sunrise effect   this would have been at approx 23 
> UT...
> ...
   Hi Len and the list !

   Nothing was noticeable, but as I'm in western Europe, 23 UT is night 
here. I put the two plots of the april 10th and 11th data in :
http://jpmere.online.fr/incoming/f5yg/2009/04/temp/20090410.gif
http://jpmere.online.fr/incoming/f5yg/2009/04/temp/20090411.gif
(GQD Anthorn 19.58 kHz, ICV Tavolara island 20.27 kHz, GBZ Skelton 22.10 
kHz, log of one minute integration with gnuplot).

   Have a good day !

   J-P

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