AS-1 links and info
General
http://lahr.org/john-jan/psn/as1/
Magnitude
http://www.eas.purdue.edu/~braile/edumod/as1mag/as1mag.htm
Calibration
http://quake.eas.gatech.edu/MagWeb/CalReptAS-1.htm
Amaseis
software
http://www.geol.binghamton.edu/faculty/jones/as1.html
Public Seismic
Network
http://psn.quake.net/index.html
Amateur
Seismologist
http://www.amateurseismologist.com/
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FAQ (due mainly to John Lahr and Larry Braile)
Does it matter which way it points?
Why don't I see nearby footsteps/jumping?