View source for MHD Core

== Environmental Alignment ==

=== Schumann Resonance Frequencies ===

{| class="wikitable"
|+ Schumann Resonance Modes
|-
! Mode !! Frequency (Hz) !! Wavelength (km)
|-
| 1 || ~7.83 || ~38,300
|-
| 2 || ~14.3 || ~21,000
|-
| 3 || ~20.8 || ~14,400
|-
| 4 || ~27.3 || ~11,000
|-
| 5 || ~33.8 || ~8,900
|}

* '''Variability:''' Frequencies can shift by ±0.5 Hz due to ionospheric conditions.

=== Geomagnetic Pulsation Frequencies ===

{| class="wikitable"
|+ Geomagnetic Pulsations
|-
! Category !! Frequency Range !! Associated Phenomena
|-
| Pc1 || 0.2–5.0 Hz || Electromagnetic ion cyclotron waves
|-
| Pc2 || 5–10 mHz || Field line resonances
|-
| Pc3 || 10–45 mHz || Cavity modes in the magnetosphere
|-
| Pc4 || 45–150 mHz || Large-scale magnetospheric oscillations
|-
| Pc5 || 1–7 mHz || Solar wind coupling effects
|}

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