A recent geomagnetic storm, sparked by a powerful coronal mass ejection (CME) from the sun, has raised significant concerns as electrical currents surged through the ground in the United States. These geomagnetically induced currents (GICs) were especially strong in the Midwest, with voltage peaking at around 5 volts per kilometer—far above normal levels. While this is not on the scale of the Great Quebec Blackout of 1989, the risk to electrical infrastructure is undeniable.
GICs can wreak havoc on power grid systems, leading to potential damage and disruptions. The storm also poses a threat to satellites, as strong geomagnetic activity can damage satellite electronics, impair communication systems, and even shorten satellite lifespans. Communication channels vital for aviation and maritime navigation, such as GPS and radio signals, are at risk of disruption. Furthermore, the increased drag caused by the denser atmosphere during geomagnetic storms can impact satellites’ orbits.
The potential for power grid interference also looms large, as geomagnetic storms can induce dangerous voltage fluctuations, risking power outages. The warning is clear: the effects of these solar events could be more damaging than initially anticipated.
Sources:
news.northeastern.edu/2024/10/10/geomagnetic-storm-effects-technology/
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