Orientation Of Interplanetary Magnetic Clouds Associated With Filament Eruptions And Major Geomagnetic Storms

Details Orientation Of Interplanetary Magnetic Clouds Associated With Filament Eruptions And Major Geomagnetic Storms Orientation Of Interplanetary Magnetic Clouds Associated With Filament Eruptions And Major Geomagnetic Storms

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh31a1178w&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH31A-1178

Astronomy and Astrophysics

Astrophysics

7500 Solar Physics, Astrophysics, And Astronomy, 7513 Coronal Mass Ejections, 7531 Prominence Eruptions, 2100 Interplanetary Physics, 2111 Ejecta, Driver Gases, And Magnetic Clouds

Scientific paper

As a major source of non-recurrent geomagnetic storms, more than half of magnetic clouds in the interplanetary medium are associated with filament eruptions [Subramanian and Dere, 2001]. The strength of south component of the magnetic field inside magnetic cloud and its duration are consider the very important factors in causing geomagnetic storm. Obviously, these factors are related to the orientation of magnetic cloud in terms of flux rope model. By investigating the observations of SOHO and ACE spacecraft from 2000 to 2003, the relationship between the orientation of interplanetary magnetic clouds which were associated with filament eruptions and major geomagnetic storms are studied. Two issues are discussed: (1) the effect of magnetic cloud's orientation on the intensity of geomagnetic storm, and (2) the possible factors in influencing the cloud's orientation. The results will be worked out.

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