The solar cycle, geology, and geoelectric hazards for power grids

When sunspots are large and numerous, intense magnetic storms are likely to occur on the Earth. Magnetic storms can generate electric fields in the Earth, and these fields can, in turn, interfere with electric power transmission grids that are grounded at the Earth’s surface. Across the contiguous United States, geoelectric hazards are highest in the Upper Midwest and in the East. These regions correspond to geological structures that are electrically resistive, and they have, historically, experienced the most interference to electric power systems....

" #Strong #electrical currents were #surging through #rocks and #soil . The biggest voltages along the US eastern seaboard and in the Midwest were as much as 10,000 times normal.
...
Back in March 1989, voltages only a little stronger than the ones shown above #broughtdown the entire #HydroQuébec #powersystem. ..."

https://spaceweather.com/

#spaceweather #solarstorm #geomagnetic #geoelectric

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

Geoelectric evidence for a wide spatial footprint of active extension in central Colorado | Geology | GeoScienceWorld