Solar storms not only cause auroras borealis; they can also disrupt the Earth's magnetic field and induce stray currents in railway tracks. This has a dangerous effect: changing railway signals from red to green without human intervention, which could cause fatal accidents. Although the risk is low, with severe storms every 30 years, countries like the United Kingdom are already researching how to prevent these failures in high-speed trains. A similar case occurred in Sweden in 1982.
How current technology seeks to shield railway systems đŠī¸
Engineers are working on early warning systems that monitor solar activity and the flow of induced currents in the rails. These systems measure geomagnetic variations in real-time and can send warnings to railway control centers minutes before a storm. The key is to isolate signaling circuits and use filters that block current spikes. However, implementing these solutions in older networks, such as those in the United Kingdom, requires significant investments and coordination with space agencies.
When the Sun decides to play train driver đ
Imagine you are on a high-speed train and, suddenly, a solar flare decides it's time to change a traffic light. The driver sees green, accelerates, and the next train is coming head-on. Luckily, this only happens every three decades, like a medical check-up but with more fireworks. That said, if you live in Sweden and traveled in 1982, you might recall that the Sun already played inspector, and not exactly to hand out smiles.