The Fiber Optic Cables That Deliver Your Internet Can Also Detect Earthquakes
A trembling needle moves slowly over a roll of paper. If a truck rumbles by, the amplitude gets stronger. If an earthquake occurs — or if someone sets off an atomic bomb underground — the needle will vibrate even more, registering the strength and duration of the event.
This is how seismographs have worked for centuries.
Nowadays, seismometer data isn’t recorded on paper. The information is transferred directly to computers worldwide in a matter of seconds, at which point earthquake researchers can analyze it…(Read the full story)