To: | [email protected] |
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Subject: | Re: LF: ULF / ELF monitoring station in Italy |
From: | "Andy Talbot" <[email protected]> |
Date: | Thu, 8 Nov 2007 19:48:55 +0000 |
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Fascinating - just had to go and look-up Schumann resonances in Wikipedia. The article there says that the waveguide has a harmonic response at 59.4Hz, and gets excited by the US power grid. In which case I would have thought it ought to be visible, but there is nothing on the trace. Also, what looks like data at 80Hz - could that be a ULF submarine transmission? Those have been observed, and there used to be a website somwhere that showed slow FSK in the ULF region, believed to be from a Russian transmitter. Andy G4JNT On 08/11/2007, Wolfgang Büscher <[email protected]> wrote: > Greetings all, > > Not LF or MF, but this may be interesting for some group members: > Renato (IK1QFK) has set up a new automated ULF / ELF monitoring station : > > http://www.vlf.it/livedata.html > > It measures seismic (mechanical) events, the E-field, and the H-field > (the latter with radio direction finding). > It's amazing how clear the first few Schumann resonances can be seen in > the E-field spectrogram. > > Cheers, > Wolf DL4YHF . > > > |
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