INA – SOURCES
A gigantic Carrington-style solar storm could knock internet for weeks, if not longer, by damaging the undersea cable network.
In a new study, Sangeetha Abdu Jyothi of the University of California, Irvine warned that a solar storm could knock the internet down for weeks if not more.
In the presentation titled "Solar Superstorms: Planning for an Internet Apocalypse" found that local and regional Internet infrastructure could be hit but they would be fine; the long undersea cables on the other hand, are at risk.
The local and regional internet infrastructure isn't at a high risk because the optical fiber isn't affected by geomagnetically induced currents; meanwhile, short cable spans are grounded regularly. But, undersea cables, on the other hand, would be knocked out of operation. The reason is that there are repeaters under the sea that connect the internet cables, at around 50-150km apart.
The repeaters amplify the optical signal, so if there was a Carrington-style solar storm, the electronic internals of the repeaters would have their asses kicked. If enough of the repeaters were affected, it would make the entire undersea cable useless.
This means large chunks of the internet would be out of order, and we won't know how bad it will be until after it happens, maybe not even then, because most of the internet wouldn't work so we wouldn't be able to read about the news.
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