Physics
Scientific paper
Jul 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jastp..73.1372h&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 73, Issue 11, p. 1372-1379.
Physics
Scientific paper
The fact that magnetic clouds are one of the main sources causing geomagnetic storms is a well-established fact. One of the issues is to establish those features of magnetic clouds determinant in the intensity of the Dst corresponding to geomagnetic storms. We examine measurements of geoeffective magnetic clouds during the period 1995-2006 providing geomagnetic storms with Dst indexes lower than -100 nT. These involve 46 geomagnetic storm events. After establishing the different characteristics of the magnetic clouds (plasma velocity, maximum magnetic intensity, etc.) we show some results about the correlations found among them and the storms intensity, finding that maximum magnetic field magnitude is a determinant factor to establish the importance of magnetic clouds in generating geomagnetic storms, having a correlation as good as the electric convective field.
Alvarez F. J.
Blanco J. J.
Hidalgo M. A.
Nieves-Chinchilla Teresa
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