Geomagnetically Induced Currents: Emerging Threat to Modern Infrastructure
Earth's Electrical Storms
Geomagnetically induced currents (GICs) are electrical currents that surge through the Earth's surface, driven by rapid changes in the geomagnetic field. These currents are primarily triggered by coronal mass ejections (CMEs), vast clouds of plasma ejected from the Sun that interact with Earth's magnetic field, causing it to fluctuate.
Impact on Infrastructure
GICs pose significant risks to electrical power-transmission systems and other electrically-conducting infrastructure. When GICs flow along these systems, they can disrupt power grids, damage transformers, and interfere with communication networks. Extreme GIC events, known as geomagnetic storms, can cause widespread power outages and infrastructure damage.
Research and Mitigation
The LWS Institute GIC Working Group is dedicated to advancing our understanding of GICs and developing mitigation strategies. Researchers are studying the effects of GICs on different infrastructure components and developing technologies to protect against their impacts.
Conclusion
Geomagnetically induced currents (GICs) represent a growing threat to modern infrastructure. While much research remains to be done, the LWS Institute GIC Working Group is committed to mitigating the risks associated with these electrical storms, ensuring the resilience of our critical infrastructure in the face of extreme space weather events.
Nasa
Wikipedia
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