Fourteen years of geomagnetic daily variation at Mario Zucchelli Station (Antarctica)

• Main Authors: Santarelli, L., Cafarella, L., Lepidi, S., Di Mauro, D., Meloni, A., Palangio, P.
• Other Authors: Santarelli, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Cafarella, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Lepidi, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Di Mauro, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Meloni, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Palangio, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia, Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia
• Format: Article in Journal/Newspaper
• Language: English
• Published: Editrice Compositori 2007
• Subjects: Geomagnetic daily variation; polar areas; 04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals; Antarctic; Austral; Mario Zucchelli; Mario Zucchelli Station; Antarc*; Antarctica
• Online Access: http://hdl.handle.net/2122/3063

During the 1986-87 austral summer a geomagnetic observatory was installed at the Italian Antarctic Base Mario Zucchelli Station. In the first three years continuous time variation monitoring and absolute measurements of the geomagnetic field were carried out only during summer expeditions. Starting 1991 an automatic acquisition system, operating through all the year, was put in operation. We present here some peculiarities of the daily variation as observed for fourteen years (1987-2000). The availability of a long series of data has allowed the definition of seasonal, as well as solar cycle effects, on short time variations as observed at a cusp-cap observatory. In particular, contrary to mid latitude behaviour, a clear dependence of the daily variation amplitude on the global geomagnetic K index was well defined. Published 225-232 1.6. Osservazioni di geomagnetismo 3.9. Fisica della magnetosfera, ionosfera e meteorologia spaziale JCR Journal open