Power variations of Schumann resonances related to El Niño and La Niña phenomena

Heng Yang; Victor P. Pasko

doi:10.1029/2007GL030092

Power variations of Schumann resonances related to El Niño and La Niña phenomena

Heng Yang, Victor P. Pasko

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

A three dimensional Finite Difference Time Domain (FDTD) model ofthe 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 Niñia 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.

Original language	English (US)
Article number	L11102
Journal	Geophysical Research Letters
Volume	34
Issue number	11
DOIs	https://doi.org/10.1029/2007GL030092
State	Published - Jun 16 2007

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

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10.1029/2007GL030092

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title = "Power variations of Schumann resonances related to El Ni{\~n}o and La Ni{\~n}a phenomena",

abstract = "A three dimensional Finite Difference Time Domain (FDTD) model ofthe Earth-ionosphere cavity with the realistic conductivity profile is employed to study the intensity variations of Schumann resonances (SR) associated with the El Ni{\~n}o and La Ni{\~n}ia 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 Ni{\~n}o and La Ni{\~n}a 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 Ni{\~n}o and La Ni{\~n}a phenomena using the combination of both electrical and magnetic components of Schumann resonances at a single station.",

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AU - Pasko, Victor P.

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AB - A three dimensional Finite Difference Time Domain (FDTD) model ofthe 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 Niñia 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.

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Power variations of Schumann resonances related to El Niño and La Niña phenomena

Abstract

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