Interplanetary causes of great and superintense magnetic storms

B. T. Tsurutani, Y. Kamide, J. K. Arballo, W. D. Gonzalez, and R. P. Lepping

Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California


We examine possible interplanetary mechanisms for the creation of the largest magnetic storms at the Earth. We consider the effects of interplanetary shock events on magnetic cloud and sheath plasma. We also examine the effects of a combination of a long-duration southward sheath magnetic field, followed by a magnetic cloud BS event. Examination of profiles of the most intense storms from 1957 to the present indicate that the latter (double IMF BZ events) is an important cause of superintense DST events. ã 1998 Published by Elsevier Science Ltd. All rights reserved.

Phys. Chem. Earth (C), 24, 101-105, 1999