Hello Martin and All Your charts are very interesting. This Io-B was observed at Nancay between 15 and 34 MHz, including 20 MHz of course. See my post: http://herrero-radio-astronomy.blogspot.com/2011/09/beautiful-io-b-followed-by-non-io-at.html It shows strong radiation reaching 80 dB above background (at times) in both right and left circular polarization. Left shows very strong ionospheric modulations, changing in slope and spacing. To study this event in more detail we can ask Laurent Denis (Technical Director of the Nancay Decametric Array) for more detailed spectra, similar to the ones shown in: http://herrero-radio-astronomy.blogspot.com/2011/08/nancay-spectra-of-io-b-110802-at-150-ms.html Would you like to do that ? The data is voluminous, what times would be most interesting for detailed comparison with your charts, at 150 ms per pixel resolution ? I copy Laurent Denis. Many thanks Best regards Victor http://herrero-radio-astronomy.blogspot.com/ On Mon, Sep 12, 2011 at 9:53 AM, Martin Wright <ducksuit@xxxxxxxxxxxxx>wrote: > Io-B on 110909 through to 110910 UT.**** > > ** ** > > This sounded like all L-bursting.**** > > ** ** > > I have 2 receivers set about 20 kHz apart and the bursts seemed to come for > most of the storm in either one receiver or the other, each section lasting > about 5 to 10 minutes. Anyone know why this happens?**** > > ** ** > > I’ve attached 3 images showing most of the event.**** > > ** ** > > Regards,**** > > ** ** > > Martin.**** >
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