This Geomagnetic plot and Schumann Resonance Spectra was created in Cottonwood, AZ on April 30th. 2002. The Earth's magnetic field was quiet and no major magnetic disturbances were in progress. Both the first and second Schumann Resonance are seen in the Spectra which looks normal as a point of reference. The location where these measurements were obtained is very noise free. Five miles from any mains source. The Geomagnetic Plot and the Schumann Resonance Spectra were recorded simultaneously.
Goes Magnetic Field readings the for day the Plot and Spectra was recorded.
Geomagnetic Plots below are through the courtesy of the Tucson, AZ Geomagnetic Observatory and the USGS.
