Blake, J. B.,
Co-Authors: J. E. Mazur, M. D. Looper, R.S. Selesnick, R.A. Mewaldt, Ian McCrea, K. Shiokawa, and K. Yumoto,
Title: Observations of Early Effects of the Large Shock of 4 May 1998 Upon the Earth's Magnetosphere,
Reference: Paper SM41B-07 EOS, 1999 Spring AGU Meeting supplement, S294, 1999.
Reference Type: Contributed Talk
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Abstract:
A strong shock reached the Earth at = 0300 UT on 4 May 1998. The interaction of the shock with the Earth's magnetosphere had major geophysical effects including causing a large enhancement of the trapped energetic electron population and pushing the magnetopause inside 5 RE. We observed the shock passage from a HEO satellite at high latitude near noon outside of the magnetopause, and the subsequent early effects upon the magnetosphere from the POLAR and SAMPEX s/c, IRIS imaging riometer, and the 210 Meridian magnetometer chain. These early observations are especially interesting because they illustrate some of the dynamics of the magnetosphere following a large impulse well before an equilibrium can be reached, and can serve as a stringent test of magnetospheric simulations.
