Sudden Ionopheric Disturbance
Taken by Fabrizio Francione on January 18, 2014 @
Turin, Italy
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Details:
Double SID (Sudden Ionospheric Disturbance) detected by our VLF station located in Turin, Italy . http://www.sidmonitor.net/gallery/station.html
Clearly visible the frequency variations on two RTTY (vlf radio station) (Niscemi and HWU, France ). The first was a C 6.0 class x-flare and the second a C 1.2 .The numbers in the first plot refers to beginning, top and end of each SID.
Photographer's website:
http://www.sidmonitor.net
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