Twenty years of geomagnetic field observations at Mario Zucchelli Station (Antarctica)

Abstract

During the 1986-87 austral summer a geomagnetic observatory was installed at Terra Nova Bay. During the first<br />years both geomagnetic field time variation monitoring and absolute measurements were carried out only during<br />summer. Since 1991 variometer measurements are automatically performed throughout the year, while absolute<br />measurements are still performed only during summer. In spite of this, interesting observations were obtained<br />during the life (quite long for Antarctica) of the geomagnetic observatory. In particular, this paper briefly<br />presents some of the most important results: studies on secular variation, daily variation (and its dependence<br />from solar cycle and seasons) and geomagnetic higher frequency variations, such as geomagnetic pulsations.

Keywords

• geomagnetic observatory – geomagnetic field variations – Antarctica