Computer Science
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....5033l&link_type=abstract
EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #5033
Computer Science
Scientific paper
During the 1999-2000 Antarctic expedition, a new station was installed for a test phase at Concordia, in the framework of a joint French-Italian venture at Dome C. The observatory started its operation on December 7, 1999 and worked until January 3, 2000. In this work we present an analysis of the geomagnetic field variations recorded at Dome C and a comparison with simultaneous data recorded at the Italian Antarctic station Terra Nova Bay, which can be useful to investigate the spatial extension of the phenomena observed at very high latitude. The location of the two stations is particularly interesting in that they are approximately at the same geographic latitude but at quite different corrected geomagnetic latitude. Our results show that between the two stations the daily variation is similar and the fluctuations with frequency around 1 mHz are coherent, provided in both cases that the comparison is made between geographically oriented components; on the contrary, higher frequency (Pc5) fluctuations are substantially decoupled between the two stations. We also found that at Dome C the fluctuation power is well related with the solar wind speed during the whole day while at Terra Nova Bay the correlation is high only far from the local geomagnetic noon.
Cafarella Lili
Francia Patrizia
Lepidi Stefania
Meloni Antonio
Palangio P.
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