Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh31a0388b&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SH31A-0388
Physics
2101 Coronal Mass Ejections (7513), 2111 Ejecta, Driver Gases, And Magnetic Clouds, 2134 Interplanetary Magnetic Fields, 2164 Solar Wind Plasma
Scientific paper
On 21-22 October 1999 a very intense geomagnetic storm (DST index: -237 nT) was detected. This event was associated with a High Speed Stream (HSS) and an interplanetary coronal mass ejection. Before and after this event, the interplanetary magnetic field showed an inversion probably associated with Heliospheric Current Sheet (HCS) crossings. One month before (21-22 September) a strong geomagnetic storm (DST index: -164 nT) was detected and the solar wind conditions were similar to those observed in October, i. e. magnetic cloud, HSS and HCS crossings. Nevertheless, the October event was stronger than the September one. We have compared both events trying to clarify what caused the difference between them. This work has been supported by the Spanish Comisión Internacional de Ciencia y Tecnología (CICYT), grant ESP2005-07290-C02-01 and ESP2006-08459 and Madrid Autonomous Community / University of Alcala grant CAM-UAH 2005/007.
Blanco J. J.
Hidalgo M. A.
Medina Julieta
Nieves-Chinchilla Teresa
Rodríguez-Pacheco J.
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