Seismograph

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Peak Ground AccelerationWhen you look at a seismogram, a classic one, what are the units on the vert

Human activity (Cars, trains, people) vibrate the ground enough to produce a background shaking meas

Subtle shakingThe city of Pasadena, California is an interesting place. It is home to the USGS earth

So, as I’ve mentioned before, I have a seismometer.Today, it picked up a 6.6 earthquake&hellip

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From the top:MontanaRussiaMy garage doorI have no idea.  Maybe my neighbor doing something weird?RUS

unclear-asdf:More spikes than a seismograph.

“I’d rather be a lightning rod than a seismograph.” Tom Wolfe. 

6.9 Earthquake off the coast of Eureka, CA.Still moving the ground an hour later, 500 miles away.Rec

Peak Ground AccelerationWhen you look at a seismogram, a classic one, what are the units on the vert

Strange SeismicOn Wednesday 12th of August, explosions occurred in Tianjin, China. These explosions

This morning’s 6.1 quake in the North San Francisco Bay, as recorded by my personal&n

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theimpossiblecool: “I’d rather be a lightning rod than a seismograph.”  Tom W

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