Physics
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusmsh51a..14w&link_type=abstract
American Geophysical Union, Spring Meeting 2004, abstract #SH51A-14
Physics
2139 Interplanetary Shocks, 2752 Mhd Waves And Instabilities, 2753 Numerical Modeling, 2788 Storms And Substorms
Scientific paper
During the period 29 October - 6 November four shocks were observed at Earth by ACE/SWEPAM/MAG and ACE/SWICS on 29 October, 30 October, 4 November, and 6 November. Two distinct and very intense geomagnetic storms, associated with the X17.2 and X10/2B flares, rank as the largest storms of Solar Cycle 23. For example, the X17.2 flare (28 October, S16E08 in AR0486), via its associated halo CME and shock wave, was responsible for the Dst = -347 nT index on 30 October 2003. We will present the use of an adaptive grid 2D MHD model to study these four shocks in detail. Accordingly, four separate pressure pulses, at the appropriate times and with different strengths and duration are introduced at the Sun to mimic the four flares. The results show that the simulated solar wind velocity time series successfully match the observations at L1.
Berdichevsky Daniel
Detman Thomas
Dryer Murray
Fry C.
Gopalswamy Nat
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