Schumann Resonance 2024 Usa. The schumann resonances (sr) are a set of spectrum peaks in the extremely low frequency (elf) portion of the earth's electromagnetic field spectrum. The schumann resonances appear as the horizontal lines.

We focus on the interactions among tles, lightning, and the ionospheric electric field. The schumann resonances (sr) are a set of spectrum peaks in the extremely low frequency (elf) portion of the earth’s electromagnetic field spectrum.