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Authors: Cafarella, L.* 
Lepidi, S.* 
Meloni, A.* 
Santarelli, L.* 
Title: Twenty years of geomagnetic field observations at Mario Zucchelli Station (Antarctica)
Issue Date: Feb-2009
Series/Report no.: /52 (2009)
Keywords: geomagnetic observatory
geomagnetic field variations
Subject Classification04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals 
04. Solid Earth::04.05. Geomagnetism::04.05.08. Instruments and techniques 
Abstract: During the 1986-87 austral summer a geomagnetic observatory was installed at Terra Nova Bay. During the first years both geomagnetic field time variation monitoring and absolute measurements were carried out only during summer. Since 1991 variometer measurements are automatically performed throughout the year, while absolute measurements are still performed only during summer. In spite of this, interesting observations were obtained during the life (quite long for Antarctica) of the geomagnetic observatory. In particular, this paper briefly presents some of the most important results: studies on secular variation, daily variation (and its dependence from solar cycle and seasons) and geomagnetic higher frequency variations, such as geomagnetic pulsations.
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