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Copyright Copernicus GmbH 2012

Abstract

We describe the ionospheric modification by the SGR 1806-20 gamma flare (27 December 2004) seen in the global electromagnetic (Schumann) resonance. The gamma rays lowered the ionosphere over the dayside of the globe and modified the Schumann resonance spectra. We present the extremely low frequency (ELF) data monitored at the Moshiri observatory, Japan (44.365° N, 142.24° E). Records are compared with the expected modifications, which facilitate detection of the simultaneous abrupt change in the dynamic resonance pattern of the experimental record. The gamma flare modified the current of the global electric circuit and thus caused the "parametric" ELF transient. Model results are compared with observations enabling evaluation of changes in the global electric circuit.

Details

Title
The effect of a gamma ray flare on Schumann resonances
Author
Nickolaenko, A. P.; Kudintseva, I. G.; Pechony, O.; Hayakawa, M.; Hobara, Y.; Tanaka, Y. T.
First page
1321
Publication year
2012
Publication date
2012
Publisher
Copernicus GmbH
ISSN
0992-7689
e-ISSN
14320576
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
1095318063
Copyright
Copyright Copernicus GmbH 2012