Schumann Live — SOS-70

Schumann Resonance Live

72-hour ELF spectrogram from the Tomsk (SOS-70) station; 0-40 Hz band, UTC time axis and amplitude color scale. The page auto-refreshes every 10 minutes.

Short answer

Global electromagnetic waves between the Earth surface and the ionosphere — the Schumann resonance — are tracked live here. The fundamental frequency is ~7.83 Hz; the spectrogram below covers the last 72 hours from the Space Observing System (SOS-70) station in Tomsk.

72-hour Schumann spectrogram from SOS-70 station (0-40 Hz)
Kaynak: Space Observing System — Tomsk (SOS-70) 10 dakikada bir otomatik yenilenir

How to read the chart

Time axis (UTC)

The horizontal axis is UTC and covers 72 hours; the right edge is always the measurement closest to "now". Add +3 (Turkish summer time) or +2 (winter time) to read local hours.

Find the bands

The brightest horizontal line near 7.83 Hz is the first mode; lines near 14.3 / 20.8 / 27.3 / 33.8 Hz are upper modes. The sharper and more continuous these lines, the more balanced the ionosphere.

Read the color

Dark blue means quiet, green-yellow medium activity, red-white strong amplitude. The thick horizontal stripe splitting the chart lengthwise is the first-mode band itself.

Vertical stripes

Vertical stripes brightening all frequencies at once are the signature of strong thunderstorm clusters (e.g. tropical storms) over the station; they usually last 20-40 minutes.

Data status

The left edge is 72 hours ago, the right edge the latest measurement. Station maintenance or data gaps freeze the edges; the freshest frame arrives when the page refreshes.

Archive comparison

During strong geomagnetic storms the bands widen and blur noticeably. When comparing with past frames, mind the time zone difference (UTC).

01What is the Schumann resonance?
A series of electromagnetic waves formed between the Earth surface and the ionosphere, sustained by continuous global lightning activity. Theoretically predicted by Winfried Otto Schumann in 1952 and measured in the 1960s, its fundamental mode is about 7.83 Hz.
02What is the Schumann resonance today?
The fundamental frequency remains ~7.83 Hz — a fixed physical property. Natural daily fluctuation is around ±0.1-0.5 Hz. The bright horizontal line in the 7-8 Hz band on the live chart is the first mode.
03What do the colors mean?
The color scale represents amplitude (signal strength): dark blue low, green-yellow medium, red-white high activity. The vertical axis shows frequency (Hz), the horizontal axis time (UTC).
04Why do the bands intensify sometimes?
Global lightning activity (especially tropical Africa, Asia and America), solar-driven ionosphere changes and day-night transitions continuously vary amplitude. Bright vertical stripes along the chart are usually strong thunderstorm clusters passing the station.
05How do I read it in Turkey time?
The time axis is UTC. Add +3 in Turkish summer time (UTC+3) and +2 in winter time (UTC+2). The "now" edge is always the rightmost point of the chart.
06Is it used for earthquake prediction?
No. There is no repeatable, verified relationship between Schumann resonance and earthquakes that converts into prediction. Claims linking specific bands to quakes are not supported by the scientific literature.
07Does it affect health?
The Schumann resonance is a natural, extremely weak electromagnetic background. Band amplifications observed in charts have no documented direct health effect; the field strength is many orders of magnitude below everyday artificial sources.
08Why does the chart look empty or dark sometimes?
The window is 72 hours; as time advances the right edge may show the not-yet-received region. Station maintenance or data gaps freeze the edges; the freshest frame arrives when the page refreshes.
09How often is the data updated?
Our server checks the source spectrogram at most every 10 minutes; the image cache on the page refreshes automatically. The timestamp of the frame is stated in the source caption.