by
Quake Finder
Since ULF magnetic anomalies were discovered prior to the 1989 Loma Prieta, Ca. M7.0 earthquake, QuakeFinder, a small R&D group based in Palo California has systematically monitored ULF magnetic signals with a network of 3-axis induction magnetometers starting in 2000. This raw magnetometer data was collected at 20-50 samples per sec. with no ...