Flare Induced Shocks and Corotating Streams in the Interplanetary Medium

M. Wiseman, P. A. Dennison
1972 Publications Astronomical Society of Australia  
Geomagnetic storm sudden commencements (ssc) and sudden increases (si) can be caused by either a propagating discontinuity (i.e. a hydromagnetic shock or blast wave) in the interplanetary plasma or by the convection past the Earth of a discontinuity in the ambient solar plasma flow.
doi:10.1017/s1323358000012923 fatcat:23zvkhlpzbcvphvmfdyx7vroai