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EARTHQUAKE PRECURSOR RESEARCH |
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Mariana, Islands 04/26/2002 Minahassa Peninsula 12/09/2001
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This page indicates the detection time of the Mariana Islands earthquake precursor, as recorded by the Elfrad Group at the Amity, NC location 04/26/2002 13.1N 144.5E Depth 76 Km M=7.2 Mariana Islands The graph below shows a 12 hour segment of data starting at 06:00 UTC. A high level of activity with a frequency from .02 to .043 hertz was observed starting at 07:29:35. The large size quake ocurred at 16:06 UTC. Precurser signals were recorded 516 minutes, or 8.6 hours before the event.
The geomagnetic field has been very quiet the past 18 hours, with no solar flares, X-rays or magnetic anomalies. This is one of the most profound recordings of ULF signals, preceding a large earthquake, we have yet recorded. The distance from the detection array to the event location is 12813.7 Km or 7967 miles.
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