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Authors: Santarelli, L.*
Palangio, P.*
De Lauretis, M.*
Title: Electromagnetic background noise at L'Aquila Geomagnetic Observatory
Title of journal: Annals of Geophysics
Series/Report no.: 2/57 (2014)
Issue Date: Feb-2014
DOI: 10.4401/ag-6299
Keywords: Electromagnetic noise, man-made electromagnetic noise, quiet days analysis
Abstract: In this paper we analyze the electromagnetic background noise at L'Aquila Geomagnetic Observatory during 2006 and 2007 in the frequency band 1-100 mHz. In this band a pronounced daily variation is observed both in the natural signals as well as in the artificial ones, giving rise to the problem of separating different contributions of very similar morphology. We analyzed periods when the local K index was approximately zero, in correspondence with minimum of the magnetospheric and ionospheric activity. We found that in our area the main source of artificial noise is constituted by the DC electrified railways.
Appears in Collections:04.05.09. Environmental magnetism
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