ARPSN Amateur Radio Public Seismic Network
Cobb [Mountain], CA - VolksMeter FFT-CSP Animation

February 3 and 20, 2009 records were truncated due to PG&E Electric Spikes and not included.
Gif's were made with 65536 slipped by 512
Chang Heng's seismoscope
February 2009

VolksMeter - Channel One - North/South

VolksMeter - Channel Two - East/West

For More Information:
A New Look at an Old Tool:
the Cumulative Spectral Power of Fast-Fourier Transform Analysis
Sheng-Chiang Lee and Randall D. Peters
Physics Department, Mercer University, Macon, GA 31207

Cobb Mountain FFT-CSP Animation - January 2009