Long period geomagnetic field fluctuations at Terra Nova Bay (Antarctica)

• Main Authors: Villante, U., Lepidi, S., Francia, P., Meloni, A., Palangio, P.
• Other Authors: Villante, U.; Dipartimento di Fisica, Università dell'Aquila, L’Aquila, Italy, Lepidi, S.; Dipartimento di Fisica, Università dell'Aquila, L’Aquila, Italy, Francia, P.; Dipartimento di Fisica, Università dell'Aquila, L’Aquila, Italy, Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Palangio, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Dipartimento di Fisica, Università dell'Aquila, L’Aquila, Italy, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
• Format: Article in Journal/Newspaper
• Language: English
• Published: AGU 1997
• Subjects: magnetic pulsations; Antarctica; 01. Atmosphere::01.02. Ionosphere::01.02.04. Plasma Physics; 01. Atmosphere::01.03. Magnetosphere::01.03.03. Magnetospheric physics; Austral; Terra Nova Bay; Antarc*
• Online Access: http://hdl.handle.net/2122/3983

A statistical analysis of the power spectra (0.7 - 5 mHz) of the geomagnetic field components H and D recorded at Terra Nova Bay (Antarctica) during three austral summers close to the maximum of solar activity reveals power enhancements in the H componenta t = 3.3, 3.9 and 4.5 mHz, which become more evident during daytime intervals. During intervals characterized by higher solar wind speeds these spectral features more clearly emerge and are also accompanied by other enhancements at lower frequencies (= 1.2, 1.9 and 2.7 mHz). The observed frequencies are close to the ones detected both at auroral and low latitudes. Published 1443-1446 N/A or not JCR reserved