The Tomsk Schumann resonance spectrogram is>
Frequency bands to watch
Most monitors highlight the first mode near 7.8–8 Hz and upper harmonics near 14, 20, 26, and 33 Hz. When multiple harmonics brighten together during elevated Kp, that pattern often tracks wider geomagnetic disturbance rather than a single “magic frequency shift.”
Common misreads
- A single vertical stripe is often a refresh artifact — wait for the next frame.
- Whiteout areas can mean saturation, not necessarily extreme global events.
- Local night-time noise differs from daytime — compare with solar wind panels.
Pairing spectrogram with charts
Use the live Schumann chart cards and harmonic table alongside the spectrogram. If SR1 amplitude rises while harmonics stay flat, investigate feed quality first. If harmonics co-move with Kp, document the timestamp and read our space weather explainer.