[Milsurplus] VLF Reception and ELF

[Brooke Clarke]

Hi Mike:

That's based on the Stanford data and the Loma Prieta quake.
The USGS spent a lot of time looking into that and had a system at 
Parkfield (where there are more quakes than anywhere else) but could not 
repeat the Stanford data.
http://engineering.stanford.edu/research/layout.php?T=C&sunetid=acfs

    * *Fraser-Smith, A.C., and T.T. Liu, * /ULF magnetic field
      variations preceding the M 5.0 earthquake of 20 December 1994 at
      Parkfield, California, Supplement to EOS/, Trans. Am. Geophys.
      Union, 76 (46), F360, 1995.
    * * Fraser-Smith, A.C., and McGill, P.R, * /Exploitation of the
      spatial uniformity of natural ULF magnetic field fluctuations for
      earthquake precursor detection/, Eos, Transactions, American
      Geophysical Union, 74, 43, Suppl., 441, 1993.
    * *Fraser-Smith, A.C., et al., * /Low-frequency magnetic field
      measurements near the epicenter of the M7.1 Loma Prieta
      earthquake/, Geophys. Res. Lett, 17,1465-1468, 1990.

http://earthquake.usgs.gov/research/parkfield/discontinued.php

Have Fun,

Brooke Clarke
http://www.PRC68.com