Analysis of Plasma and Field Conditions during Some Intensely Geo-effective Transient Solar/Interplanetary Disturbances of Solar Cycle 23

Details Analysis of Plasma and Field Conditions during Some Intensely Geo-effective Transient Solar/Interplanetary Disturbances of Solar Cycle 23 Analysis of Plasma and Field Conditions during Some Intensely Geo-effective Transient Solar/Interplanetary Disturbances of Solar Cycle 23

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006japa...27..361s&link_type=abstract

Journal of Astrophysics and Astronomy, vol. 27, no.2 & 3 P. 361-366

Astronomy and Astrophysics

Astrophysics

3

Earth: Geomagnetic Storm, Sun: Solar And Wind, Magnetosphere Coupling

Scientific paper

The problem of solar wind-magnetosphere coupling is investigated for intense geomagnetic storms (Dst γ -100 nT) that occurred during solar cycle 23. For this purpose interplanetary plasma and field data during some intensely geo-effective transient solar/interplanetary disturbances have been analysed. A geomagnetic index that represents the intensity of planetary magnetic activity at subauroral latitude and the other that measures the ring current magnetic field, together with solar plasma and field parameters (V, B, Bz, σB, N, and T) and their various derivatives (BV, -BVz, BV2, -BzV2,B2V, Bz2V,NV2) have been analysed in an attempt to study mechanism and the cause of geo-effectiveness of interplanetary manifestations of transient solar events. Several functions of solar wind plasma and field parameters are tested for their ability to predict the magnitude of geomagnetic storm.

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