Seismographs:

For a long time i’ve had one of the lovely SEP seismometers (pictured) and it’s variously been operational or tucked away in a cupboard waiting for a new PC or other repairs. This time round it required a re-wind of the sensor coil after being damaged by accident a few years ago.

The School Seismometer Project

After re-winding it’s now set up in the basement of Exeter Maths School and happily reporting the movements of the building.

As you can see, the building gets a lot noisier during the day. Several of these noisy events line up with expected periods of the day – lesson changeover etc — others line up with trucks delivering to the cafe a few meters away.

When the next earthquake of reasonable proximity or size occurs we’ll have some lovely data to play with!