Investigations on diurnal and seasonal variations of Schumann resonance oscillations in the auroral region

Details Investigations on diurnal and seasonal variations of Schumann resonance oscillations in the auroral region Investigations on diurnal and seasonal variations of Schumann resonance oscillations in the auroral region

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....7045r&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #7045

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Within the framework of the ITALIANTARTIDE project, continuous geomagnetic measurements were performed in the frequency range 5-20 Hz during 1996-97 at high latitude location (Baia Terra Nova Base, Antarctica; geomagnetic latitude 80.0° S, 307.7° E). BTN is a particularly important observation site, which is located in auroral region of known high electromagnetic activity in the ELF band. This site is connected by lines of force that reach the magnetopause in the daylight side at the Earth and the plasmasheet of the magnetotail in the nightside therefore BTN is able to look extreme regions of the magnetosphere. Its remote location Antarctica provides the important advantage that electromagnetic background noise is not corrupted by anthropogenic noise and there is a very low lightning activity. Schumann resonance oscillations are the most remarkable natural electromagnetic phenomena in the lower frequency side of ELF range. The measurements are concenned primarily with the properties of the components of the geomagnetic activity in the Schumann resonance frequency range, which forms a stable background signal level. We present the results on the long-term seasonal and diurnal variation of the background noise and its statistics in the frequency band from 5 to 20 Hz.

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