University Radio Observatory
Live data from Sudbury, Ontario, Canada
Coordinates 46.49 N, 81.01 W (click here for location on Google map)
|ULF Induction Magnetometer-Magnetic Field
The magnetometer is situated in a
quiet area on the Laurentian University campus on a
rock-face in Sudbury, Canada. Data is streamed
continuously to a laptop placed inside of the Laurentian
University Arboretum Pavilion approximately 50 m from
the magnetometer using standard 2-channel microphone
|ULF magnetic field
Below is a spectrogram updated every 15 minutes displaying the last 8 hours of activity between 0.1 and 36 Hz. Bottom part is 0-4 Hz. Evident are continuous 7 Hz (campus power generator?) and 20 Hz (local mining company, Bell telephone line?) and 31 Hz strong signals of yet unknown origin, but are pervasive all day.
Magnetic field hourly multistrip shows ULF activity within the 0.1 to 36 Hz range showing last 6 hours. Data is updated every 15 minutes.
Magnetic field daily multistrip shows 0-30 Hz activity of the last 6 days. Scroll time is 110 seconds and is updated every 15 minutes. Useful for tracking increases in Schumann resonance signal associated with local and global lightning.
Magnetic field daily multistrip shows 0-10 Hz activity of the last 6 days. Scroll time is 110 seconds and is updated every 15 minutes. Useful for checking the occurrence of geomagnetic pulsations, onsets of geomagnetic storms, and spectral resonance structures (SRS).
ELF - Electric Field
Marconi antenna; 3m tall 10 m wide top hat equipped with LNPF-24 preamplifier designed by Renato Romero. Gain set at +24 dB and 0-100 Hz filter turned on
The audio streaming of this system is available here: http://22.214.171.124:8000/stream.m3u
0-100 Hz reception. Picture updated every 15 minutes. Scroll time 40s, frequency resolution 84 mHz. Schumann resonances are almost always visible.
0-34 Hz daily multistrip. Scroll time 4.5 seconds, FFT resolution 168 mHz. Updated every 15 minutes.
0-40 Hz multistrip: Scroll time 110 seconds, 7 mHz resolution, updated every 15 minutes.
Unattended operations and spectrograms are perfomed with SpectrumLab: http://www.qsl.net/dl4yhf/spectra1.html. Extra special thanks go to Renato Romero for his patience and help in constructing the magnetometer and for hosting the data on http://www.vlf.it. Additional thanks are also extended to the Laurentian University Biology Department to provide space for continuous monitoring.
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