DEMETER Satellite Observations of Particle Burst Prior to Chile Earthquake

Details DEMETER Satellite Observations of Particle Burst Prior to Chile Earthquake DEMETER Satellite Observations of Particle Burst Prior to Chile Earthquake

2010-11-16

arxiv.org/abs/1011.3592v1

Physics

Geophysics

Scientific paper

The lithosphere activity during seismogenic or occurrence of one earthquake may emit electromagnetic wave which propagate to ionosphere and radiation belt, then induce disturbance of electric and magnetic field and the precipitation of high energy charged particles. This paper, based on the data detected by DEMETER satellite, present the high energy charged particle burst(PB) with 4 to 6 times enhancement over the average value observed about ten days days before Chile earthquake. The obvious particle burst was also observed in the northern hemisphere mirror points conjugate of epicenter and no PB events in different years over the same epicenter region was found. The energy spectra of the PBs are different from the one averaged within the first three months in 2010. At the same time, the disturbance of the VLF electric spectrum in ionosphere over the epicenter detected by the DEMETER satellite are also observed in the same two orbits. Those observations from energetic PB and VLF electric spectrum disturbance demonstrates the coupling relation among the electromagnetic wave emitted by seismic activity, energetic particle and electric field in ionosphere. We eliminate the possible origination of PB including magnetic burst and Solar activities. Finally we think the PB is likely to be related to Chile earthquake and can be taken as the precursor of this earthquake.

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