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D'Entrecast Islands  08/14/00

Michoacan, Mexico  08/09/00

Sumatra, Indonesia  06/04/00

Philippine Islands  02/13/00

Tonga Islands 01/08/00

Northern Chile  01/08/00 

 Turkey  11/12/99

Afghanistan   11/08/99

New Madrid 10/23/99

Solomon  10/19/99 

Southern Cal  10/16/99

 Alaska  10/13/99 

 Indonesia  10/10/99 

 Kamchatka 10/05/99

 Mexico  09/30/99 

 Taiwan  09/20/99 

 Turkey  08/17/99  

Mexico  06/15/1999

These pages indicate the detection times of recent earthquakes, as recorded by the Elfrad Group

D'Entrecasteaux Islands   08/14/00  22:11:19.7UT   9.4S 153.7E  Depth= 33 Km M= 6.0 

This graph shows the electrical precursor and seismic activity, before and during this earthquake, that occurred in the D'Entrecasteaux, Islands , which are  located 13,783 kilometers distant. Note the precursor activity which began at 20:10:10.9 UT.  These ULF electrical signals were detected 121  minutes prior to the earthquake and and were low to moderate in amplitude.  This is largely due to the distance. The above graph shows data recorded for a duration of 4 hours before and during the event. Note the increase of activity in the frequency band of .02 to .04 hertz. until and during the first shock. 

The graph below was detected and recorded in Australia, by Arie Verveer,    a PSN and Elfrad Group member.  The screen shot indicates a precursor 78 minutes prior to the D'Entrecasteaux event.  The device used to record this data is an electromagnetic detector which was built by him last week.  The sensitivity is comparable to a fluxgate magnetometer. Note the large shift of the magnetic field before the precursor detection. 

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