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Authors: Gokhberg, M. B.*
Title: Background electromagnetic noisein the vicinity 1 Hz as a possible indicatorof earthquake-related anomalies
Issue Date: 2004
Series/Report no.: 47 (1)
Keywords: electromagnetic emission
Earth surface
earthquake precursor
1 Hz frequency range
Abstract: Measurements of space-time distributions of the background emissions in the frequency range 0.5-5 Hz and their seasonal and diurnal variations are presented. The analysis of impedance ratio determines the presence of high space harmonics in the emission spectral distribution. The absence of this emission during the winter time correlates with the absence of any precursors before local earthquakes with M ~ 6. It is shown that the knowledge of the background emission behavior and its origin are very important for precursor phenomena monitoring.
Appears in Collections:04.06.10. Instruments and techniques
Annals of Geophysics

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