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AGU: Journal of Geophysical Research, Atmospheres

 

Keywords

  • Schumann resonance
  • positive lightning
  • continuing current
  • random process
  • lightning global activity

Index Terms

  • Atmospheric Processes: Atmospheric electricity
  • Atmospheric Processes: Lightning
  • Mathematical Geophysics: Stochastic processes
  • Mathematical Geophysics: Fourier analysis
Abstract
Cited By (0)
 

Abstract

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 115, D04101, 7 PP., 2010
doi:10.1029/2009JD012539

Schumann resonances excitation due to positive and negative cloud-to-ground lightning

V. V. Surkov

Moscow Engineering Physics Institute, Research Nuclear University of the Russian Federation, Moscow, Russia

M. Hayakawa

Department of Electronic Engineering, University of Electro-Communications, Chōfu, Japan

In this paper, we have applied a statistical approach to the problem of Schumann resonances excitation due to both negative and positive cloud-to-ground lightning (−CG and +CG, respectively). Correlation matrices and a power spectrum of natural electromagnetic variations resulted from the global lightning activity are estimated. On the basis of these estimates we have shown that the global +CG lightning activity can make a significant contribution to the low-frequency portion of power spectrum and to the Schumann resonances. Despite their infrequent occurrence compared to the negative flashes, the global +CG lightning can be of primary importance in generating the power spectrum since their charge moment and continuing current are, on average, larger than those of the −CG lightning.

Received 26 May 2009; accepted 20 October 2009; published 16 February 2010.

Citation: Surkov, V. V., and M. Hayakawa (2010), Schumann resonances excitation due to positive and negative cloud-to-ground lightning, J. Geophys. Res., 115, D04101, doi:10.1029/2009JD012539.

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