Seismographs and Ambient Tremors

[HeyHomie]

How do seismographs prevent false readings from day-to-day, non-earthquake tremors (such as someone walking into the room, a truck driving by outside, etc.)?

[Duckster]

In simple terms a seismograph is composed of two parts:

1) A detector to pick up motion.
2) A recorder.

The two are never near each other, except in some museum exhibits where kids can jump on a pad and see the results on the rotating drum behind the window.

This link will help explain it.

[Squink]

Seismographs do pick up events like SUV crashes and wind storms in forested areas.