Mount Etna, Sicily, Italy (37.7°N, 15.0°E)
ETNA Radio Observatory
Right now
Etna: 52 · global avg: 56
Louder than: Cumiana (35)
Quieter than: Tomsk (75), Eskdalemuir (55), California (65)
Latest Spectrogram
Hey there! This past week at our Etna station has been pretty mellow, with the Schumann Resonance staying mostly in a calm range. We saw a peak of 65, which isn't too high, and thankfully, no major spikes above 80 to report. It's been a relatively quiet period for the Earth's heartbeat there.
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Notable events (last 30 days)
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75
View day →2026-09-15
The rightmost portion of the chart shows the tail end of a very high-intensity broadband burst that saturates the spe…
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75
View day →2026-09-14
The rightmost portion of the spectrogram shows persistent vertical streaking and elevated background noise levels acr…
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75
View day →2026-09-14
The rightmost portion of the spectrogram shows persistent, high-intensity vertical activity that obscures the standar…
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75
View day →2026-09-14
The rightmost portion of the spectrogram shows intense, high-amplitude vertical striations and localized red-intensit…
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75
View day →2026-09-11
The rightmost portion of the spectrogram shows a period of high-intensity, broadband vertical activity that obscures …
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72
View day →2026-09-14
The rightmost portion of the spectrogram shows a sudden, intense burst of energy across the 25-40 Hz range, manifesti…
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65
View day →2026-10-02
The rightmost portion of the spectrogram displays persistent, elevated intensity in the 10-14 Hz band, which is signi…
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65
View day →2026-10-02
The rightmost portion of the spectrogram shows sustained, elevated intensity in the 8-15 Hz range, with the Schumann …
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65
View day →2026-10-01
The rightmost portion of the spectrogram shows sustained, elevated intensity in the 8-15 Hz band, indicating active S…
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65
View day →2026-09-29
The rightmost portion of the spectrogram displays clear, moderately intense horizontal bands at the primary Schumann …
Last 14 days
Quick scan of recent activity — tap a day for the full check-in.
Explore
Track the Moon
Live lunar phase, illumination, and the 2026-2027 full moon calendar.
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.
