Other
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3411102y&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 11, CiteID L11102
Other
4
Ionosphere: Ionospheric Disturbances, Ionosphere: Particle Precipitation, Atmospheric Processes: Atmospheric Electricity, Atmospheric Processes: Lightning
Scientific paper
A three dimensional Finite Difference Time Domain (FDTD) model of the Earth-ionosphere cavity with the realistic conductivity profile is employed to study the intensity variations of Schumann resonances (SR) associated with the El Niño and La Niña phenomena. Comparison of the results derived from our FDTD model and the previous studies by other authors on related subjects shows that the intensity of the Schumann resonances varies with the spatial shifts of the thunderstorm regions under El Niño and La Niña conditions. Due to the different spatial field distributions of SR electrical and magnetic components in the Earth-ionosphere cavity, the different power variation patterns are clearly observed in the electrical and magnetic components with the motion of the thunderstorm center in our FDTD results. A new method is proposed to detect the shifts of the thunderstorm regions related to the El Niño and La Niña phenomena using the combination of both electrical and magnetic components of Schumann resonances at a single station.
Pasko Victor P.
Yang Heng
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