Sister blog of Physicists of the Caribbean in which I babble about non-astronomy stuff, because everyone needs a hobby

Saturday, 10 November 2018

How a Solar Storm Detonated U.S. Sea Mines in 1972

Originally shared by Eli Fennell

How a Solar Storm Detonated U.S. Sea Mines in 1972

In 1972, as part of something called Operation Pocket Money targeting North Vietnamese ports during the Vietnam War, the U.S. Navy laid a minefield od destructor sea mines in the waters off Hon La. Then, in early August of that year, some 25 to 30 of these mines suddenly exploded within a short time span, for no apparent reason.

Even at the time, the Navy suspected the culprit might be solar activity. Many of these mines could be detonated by changes in nearby magnetic fields, meant of course to be signals of a nearby ship. It also happens that 1972 witnessed one of the most powerful solar storms ever detected, a likely source of magnetic field changes to account for the detonation of the mines.

A new analysis of data from that period suggests that the Navy was correct in their assessment: solar activity interfered with the function of the mines, causing them to detonate prematurely.

Researchers are now urging further study of this incident, which may hold lessons and warnings about how our ever increasing dependence on technologies, combined with our unavoidable dependence on the sun, may put us at risk at things far worse even than a few underwater explosions.

#BlindMeWithScience #Astronomy #Geophysics
https://www.sciencealert.com/the-sun-may-have-detonated-dozens-of-us-sea-mines-uncovered-navy-documents-reveal

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