Hello Richard, 

    Have a look at http://www.nemre.nn.doe.gov/nemre/ for a start. Explosions 
generate a different shape of "wave packet" to earthquakes, both in seismic 
and infrasonic measurements. Quite a lot of work has been done on trying to 
separate the two, since it is a bit critical for CTBT monitoring. Sorry, but 
I am not familiar with your abbreviations. What temperature does your 
superconducting instrument run at, just out of curiosity? I did some low 
temperature physics. I tried to find a Website for you but failed.

    Hope that this is of some help. 

    Regards,

    Chris Chapman
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