Here is another minor earthquake that got caught by my “magnetometer/seismograph combo“.  This was a Mag 3.3 quake about 16 kilometers (10 miles) from home. Note that the picture doesn’t show the earthquake waveforms themselves, but the swinging of the mirror. Still I’m thinking this is enough for I a real-time detection for events like this – maybe sound an alarm immediately when an earthquake is detected.

For the record, I know that a magnetometer is not supposed to detect earthquakes. However, the design of my DIY magnetometer makes is susceptible to vibrations. The result is that aside from magnetic storms, it catches earthquakes. I consider this as a bonus.

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