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Geomagnetic field variations at low and high latitude during the January 10–11, 1997 magnetic cloud
Author(s) -
Villante U.,
Francia P.,
Lepidi S.,
De Lauretis M.,
Pietropaolo E.,
Cafarella L.,
Meloni A.,
Lazarus A. J.,
Lepping R. P.,
Mariani F.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/98gl00335
Subject(s) - earth's magnetic field , magnetic cloud , solar wind , geophysics , latitude , polarization (electrochemistry) , geology , magnetic field , high latitude , atmospheric sciences , physics , geodesy , coronal mass ejection , quantum mechanics , chemistry
On Jan. 10–11, 1997 a wide magnetic cloud reached the Earth triggering intense geomagnetic activity. Observations performed at low and very high latitude show that the same features appear simultaneously in correspondence to different changes in the solar wind conditions. In particular, highly polarized modes are simultaneously observed at the same discrete frequencies after the passage of the high density solar wind region following the cloud. SI's and ULF waves polarization are also examined in a wide latitudinal and longitudinal extent.