Awesome. We'd actually have a use in the lab for such a measurement (we see seismic traffic noise from a bridge ~200m away). We've toyed with a magnetometer a bit, but an acceleration-based measurement would be more relevant for our needs.
Did you do any documentation/know of a reference? Thanks!
I read about it on a handout as a blurb of work going on at CalTrans at one of the job recruiting fairs. This is their web site: (http://www.dot.ca.gov/research/researchreports/index.htm) Their search technology sucks though. Still looking ...
Did you do any documentation/know of a reference? Thanks!