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Multiple spacecraft observations of interplanetary shocks Four spacecraft determination of shock normalsISEE 1, 2, 3, IMP 8, and Prognoz 7 observations of interplanetary shocks in 1978 and 1979 provide five instances where a single shock is observed by four spacecraft. These observations are used to determine best-fit normals for these five shocks. In addition to providing well-documented shocks for future investigations these data allow the evaluation of the accuracy of several shock normal determination techniques. When the angle between upstream and downstream magnetic field is greater than 20 deg, magnetic coplanarity can be an accurate single spacecraft method. However, no technique based solely on the magnetic measurements at one or multiple sites was universally accurate. Thus, the use of overdetermined shock normal solutions, utilizing plasma measurements, separation vectors, and time delays together with magnetic constraints, is recommended whenever possible.
Document ID
19830052711
Document Type
Reprint (Version printed in journal)
Authors
Russell, C. T. (California Univ. Los Angeles, CA, United States)
Mellott, M. M. (California, University Los Angeles, CA, United States)
Smith, E. J. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
King, J. H. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1983
Publication Information
Publication: Journal of Geophysical Research
Volume: 88
ISSN: 0148-0227
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAS5-2772
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other