Mount Etna, Sicily, Italy (37.7°N, 15.0°E)
ETNA Radio Observatory
No data available for this station.
Updated 372 hours ago
Latest Spectrogram
Hey there! This past week at the Etna station has been pretty interesting. We saw a really strong peak reaching 85, which is quite high, but most of the week was fairly calm, with readings averaging around 45. It looks like there was just one particularly energetic event that stood out above the rest.
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Notable events (last 30 days)
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85
View day →2026-08-03
The rightmost portion of the spectrogram is dominated by a high-intensity, broadband noise event that obscures the st…
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75
View day →2026-08-05
The rightmost portion of the spectrogram shows a sharp, intense vertical band of broadband noise spanning the entire …
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75
View day →2026-08-03
The rightmost portion of the spectrogram shows sustained, high-intensity activity with broadened Schumann resonance h…
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75
View day →2026-08-02
The rightmost portion of the spectrogram shows persistent, high-intensity vertical streaks of yellow and red, indicat…
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75
View day →2026-07-25
The rightmost portion of the spectrogram shows intense, persistent red and yellow horizontal bands across the primary…
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75
View day →2026-07-25
The rightmost portion of the spectrogram displays high-intensity, recurring vertical bursts that span the entire freq…
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72
View day →2026-08-02
The rightmost portion of the spectrogram shows a continuation of moderate-to-high intensity vertical noise bursts tha…
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72
View day →2026-08-02
The rightmost portion of the spectrogram shows persistent, high-intensity vertical striations extending across the en…
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72
View day →2026-07-25
The rightmost portion of the spectrogram shows persistent, elevated intensity across the lower Schumann harmonics, pa…
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72
View day →2026-07-25
The rightmost portion of the spectrogram shows sustained, high-intensity activity across the primary Schumann resonan…
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Open calendarETNA — volcano-flanked seismic lens
ETNA sits on the eastern slopes of Europe's most active volcano, in a region where tectonic stress and space weather intersect in fascinating ways.
Operated by INGV (Italian National Institute of Geophysics and Volcanology), it combines Schumann resonance monitoring with seismic observation — a rare dual-purpose site.
Mediterranean storms and occasional volcanic tremors show up in its signal, making ETNA one of the most distinctive-looking spectrograms in the network. Visit etna-ero.it
Trust & authority
ETNA Radio Observatory
Operating since 2016 · 10 years of continuous monitoring
Frequently asked questions
How does ETNA measure Schumann resonance?
ETNA uses a coil magnetometer tuned for ELF/VLF frequencies (0–105 Hz). It produces an 8-hour rolling spectrogram updated several times per day, visible at etna-ero.it.
Why is ETNA important to our network?
ETNA sits on an active volcano and is operated by INGV (Italy's national volcanology institute), which combines seismic monitoring with electromagnetic observation. It is our only dual-purpose geophysical site.
When was its last major event?
Check the Notable events section above — it lists the top 10 highest-score events at ETNA from the last 30 days, each linked to its full daily context.
How reliable is the data?
INGV is Italy's national scientific authority for geophysics. The ETNA station has been operating since 2016 and the data is used in INGV's own research. We cross-validate readings against other stations with our IDW weighting algorithm.
Where does the raw data come from?
Raw spectrogram images come directly from etna-ero.it. We ignore known artifacts (50 Hz mains interference) and focus on the 3–40 Hz Schumann band. Visit etna-ero.it for the original feed.
