These traces display outstanding examples of raw data.  

This first set, occurred about 18 hours AFTER the M6.6 Northridge Quake, 
on the morning of January 17, 1994.  

The remarkable feature, is that groups of signals all start the same polarity.  
The polarity changed about 30 minutes into the set.

January 17 @ 00:16:02 the waveforms begin 

January 17 @ 00:22:52 00:34:50 initial polarity = negative  


             00:40:30 00:51:20 initial polarity = positive 

The following sets of waveforms were recorded in Placerville
about 24 hours BEFORE the January 14, 1998,  M3.5 event. 
Placerville is about 60 miles from Truckee.


January 14, 1998 ...06:11:14  06:12:22 Precursors 


This is the way the M3.5 Truckee event was seen in Placerville.

January 15, 1998 ...07:12:12 07:12:28 The M3.5 EVENT



 The Antenna ... ready to deploy ... 220 kb 


 back