In order to detect ionospheric anomalies due to the
geomagnetic storm of April 20, 2018, global maps of VTEC provided by CODE were used.
During strong
geomagnetic storms there was a significant increase in power spectra within the 7.5 Hz to 14 Hz range within the right but not the left parahippocampal gyrus compared to days with relatively quiet geomagnetic activity.
(4.) Kappenman, J., "
Geomagnetic Storms and Their Impacts on the U.S.
The most severe
geomagnetic storm in recorded history occurred two years before the start of the American Civil War and has become the touchstone for those who monitor gray swan emerging risks.
Therefore, during an intensive
geomagnetic storm and when the direction of the geoelectric field coincides with the direction of EPG objects location on the geographical map of the territory, considerable geomagnetically induced currents are possible in the neutrals and grounded windings of PT and phase wires of PTL.
According to a recent report published by the National Aeronautics and Space Administration (Nasa), the
geomagnetic storm that started at the beginning of May will last until October 29.
Still, a recent report on the nuclear hazards of EMP attacks concludes that only 33 reactors in the US are not vulnerable to total grid failure following an intense
geomagnetic storm. The vulnerability is concentrated in two areas: the northwest (Oregon and Washington) and the entire coastal area east of the Mississippi.
This index ranges from 0, which is low activity, to 9, which means that a powerful
geomagnetic storm is underway.
"A solar flare or
geomagnetic storm, over which we have no control but which will inevitably happen from time to time, could produce a similar catastrophic result.