Schumann resonance today.
Explore Tomsk, Nagycenk and Etna. Follow numeric observations where available, read source spectrograms and understand what each station measures.
One Earth.
Different perspectives.
Explore the signal from different instruments. Each station tells a local story.
Meet the observatories ↗NagycenkHungary · HUN-REN EPSS
A long-running geophysical observatory. Its public display combines electric and magnetic spectra with estimates of the first three resonance modes from the vertical electric field.
See Nagycenk’s own display.
The observatory publishes a quick-look chart. A numerical feed is not connected here, so there is no daily comparison for this station yet.
View Nagycenk observations ↗What the station measures
The display includes two horizontal magnetic components and the vertical electric component. Local interference and weather can affect quick-look estimates; the data require quality checks.
About this connection
Numerical files exist in the observatory’s processing system. Access and republication terms must be arranged with the data manager before we can store and chart those values.
Data access information ↗
Schumann Pulse for iPhoneA little context.
With you through the day.
Keep observations close, choose activity alerts and build a journal of your own day. Explore comparisons as your history grows.
Read the signal with confidence.
Amplitude is not frequency ↗
Read axes, colours and missing periods without turning every bright band into a claim.
02 / The scienceWhy Earth has resonances ↗
Lightning, the Earth–ionosphere cavity and the often-quoted 7.83 Hz fundamental.
03 / The stationsA world of listening stations ↗
Explore documented research locations and the different instruments behind the observations.
Different stations. Different measurements.
Schumann resonances are electromagnetic resonances of the Earth–ionosphere cavity, mainly excited by lightning. A station measures a local signal shaped by global activity, propagation, local interference and its instruments.
Amplitude describes signal strength. Frequency, measured in hertz, describes the position of a resonance peak. The often-quoted 7.83 Hz is an approximate reference for the first mode, not a live reading or a fixed number for every moment. Different instruments and source units mean the stations’ amplitudes should not be combined into a global score.
For Tomsk, we draw original charts from subscribed numeric observations, using five-minute averages of samples around each timestamp. Times are converted to UTC. The comparison uses matching times on both days; missing observations remain gaps. A reading more than 90 minutes old is marked delayed. Etna provides an attributed source spectrogram; Nagycenk’s display is linked at the observatory. Neither has a numerical feed connected here yet.
Understand the frequencies ↗ · Our source standards