CUMIANA VLF MONITORING STATION
Live data from CUMIANA (TO), NW Italy, south Europe
Maintained by Renato Romero

Lat. 44° 57’ 21,924’’ N
Lon. 7° 25’ 16,435’’ E
To see on google map click this link  https://goo.gl/maps/7wviV5M8BV9T6F2A9



Electric Field: Marconi Antenna (Ogg/Vorbis Stream) + Geophone

Audio signals coming from Marconi antenna: a big "T" 10 m high with 15 m long top hat, 
You can listen the audio streaming live clicking here:  http://5.9.106.210/vlf15.m3u

 

The audio streaming server is provided by Paul Nicholson.
See at Paul's page "Live VLF Natural Radio" for others audio stream available: http://abelian.org/vlf/

VLF monitoring

Here below the first LIVE spectrogram, updated 30 minutes.
It shows the last 8 hours VLF activity, as received by Marconi antenna (vertical electric field).


Marconi Antenna + Geophone


Amplitude scale: two channels listed below.

  • Channel 1, seismic monitor. Frequency range: 1 to 30 Hz for the top spectrogram. Signals coming from geophone I/O SENSOR Nederland b.v. model SM-4/UB8 (see at SM-4_Brochure.pdf) 40 dB amplified with a very low noise preamplifier.
  • Channel 2, electric field. Frequency range: 1 to 105 Hz for the bottom one. Signals coming from Marconi antenna, with a low noise current preamplifier, placed at the bottom of it  (LNVA_20-24).

Picture, every 30 minutes, shows last 8 hours. All date and times are in UTC.
The scroll time is 40 s, and FFT frequency resolution 21 mHz.
As the receiving station is placed not too far from an industrial area, sometimes strong tones are detected by geophone sensor, caused by mechanical machine (1 km far from here).

Electric filed multistrip daily representation, useful for comparing anomalies from day to day:


Scroll time 110 sec, updated every 30 minutes, FFT frequency resolution 10.5 mHz.

Geophone Multistrip hourly representation, useful for local seismic events correlation:


Scroll time 4.6 sec, updated every 60 minutes, FFT frequency resolution 112 mHz

Here below the same data elaborated as plotting traces. The picture shows the last 30 hours, and values are detected every 150 s.

Picture, updated every 30 minutes. Four traces are reported:

  • Geophone trace , it shows the average and peak signals coming from the geophone sensor, in 1-20 Hz range.
  • ULF noise 10 Hz , it shows the medium value between 3 and 30 Hz.
  • ELF noise 100 Hz , it shows the medium value between 30 and 300 Hz.
  • 2th SR freq. , it shows the frequency of second Schumann resonance (in Hz).


Here below the real time situation about lighting strikes in Europe. Courtesy of http://www.blitzortung.org

European map of lightning. It can sometimes
                be off line for work in progress. If the map is not
                displayed go to: http:// www.blitzortung.org


Unattended operations, signal conditioning, spectrograms and RDF functions are performed with SpectrumLab: http://freenet-homepage.de/dl4yhf/spectra1.html . Many thanks to Wolfgang Buscher for his support.
Automatic FTP process is realized with SyncBack Freeware V3.2.14 http://www.2brightsparks.com/downloads.html.

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