Effect of interplanetary shock strengths and orientations on storm sudden commencement rise times

C. Wang, C. X. Li, Z. H. Huang, J. D. Richardson

doi:10.1029/2006gl025966

Effect of interplanetary shock strengths and orientations on storm sudden commencement rise times

DOI Web Site Web Site 被引用文献3件

C. Wang

State Key Laboratory of Space Weather Chinese Academy of Sciences Beijing China
C. X. Li

State Key Laboratory of Space Weather Chinese Academy of Sciences Beijing China
Z. H. Huang

State Key Laboratory of Space Weather Chinese Academy of Sciences Beijing China
J. D. Richardson

Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology Cambridge Massachusetts USA

書誌事項

公開日: 2006-07

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1029/2006gl025966

公開者: American Geophysical Union (AGU)

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説明

<jats:p>We make a statistical survey of interplanetary (IP) shocks and storm sudden commencements (SSCs) observed between 1995 and 2004. We find that 75% of SSCs are associated with shocks, consistent with previous work. We use this survey to investigate the effect of the interplanetary shock strength and orientation on the SSC rise time. We find that the higher the speed of an IP shock, the less time it takes to sweep by the magnetosphere, and thus the shorter the rise time of the corresponding SSC. The orientation of an IP shock also effects the SSC rise time. Generally speaking, a highly oblique shock causes asymmetric compression of the magnetosphere with respect to the noon‐midnight meridian, takes more time to sweep by magnetosphere, and thus results in a longer rise time of the SSC.</jats:p>