>the Schumman is also popping off
The Schumann Resonances are driven by lightning discharges:
https://map.blitzortung.org/#1.5/54.9/-7.6
https://svs.gsfc.nasa.gov/10891/
> It would take a lot more than lightning
This illustration shows the lowest three resonant modes, with estimates for their frequencies, that occur in the electromagnetic cavity on Earth between the ionosphere and the surface. These Schumann resonances are caused by continual lightning strikes across our planet, and were predicted in basically their modern form in 1952.
https://bigthink.com/starts-with-a-bang/entire-earth-resonates/
Schumann Resonance Signatures of Global Lightning Activity
The natural electromagnetic waves in the SR frequency range (5 Hz to approx. 60 Hz) radiated by lightning discharges are contained by the Earth-ionosphere cavity. This cavity excitation by lightning can occur as a single energetic flash (a ‘Q-burst’), or as an integration of a large number of less energetic flashes (the ‘background’ resonances). In principle, continuous observations of SR parameters (modal amplitudes, frequencies, and quality factors) provide invaluable information for monitoring the worldwide lightning activity from a single SR station.
https://link.springer.com/chapter/10.1007/978-1-4020-9079-0_16
Schumann Resonances in Lightning Research
Schumann resonances (SR) are global electromagnetic resonances excited primarily by lightning discharges. This review is aimed at the reader generally unfamiliar with Schumann resonances. Our goal is to give some historical context to SR research, and to show the extensive use of Schumann resonances in a variety of lightning-related studies in recent years
https://www.semanticscholar.org/paper/Schumann-Resonances-in-Lightning-Research-Price-Pechony/6ce6c99a8c02f1148332ac973f550c7d6e5d2c6d