The July 29, 1977 Magnetic Storm: Introduction to the Coordinated Data Analysis Workshop

  1. C.T. Russell and
  2. David J. Southwood
  1. R.H. Manka1,
  2. T.A. Fritz2,
  3. R.G. Johnson3,
  4. R.A. Wolf4,
  5. M.J. Teague5 and
  6. J.I. Vette6

Published Online: 21 MAR 2013

DOI: 10.1029/SP020p0246

The IMS Source Book: Guide to the International Magnetospheric Study Data Analysis

The IMS Source Book: Guide to the International Magnetospheric Study Data Analysis

How to Cite

Manka, R.H., Fritz, T.A., Johnson, R.G., Wolf, R.A., Teague, M.J. and Vette, J.I. (1982) The July 29, 1977 Magnetic Storm: Introduction to the Coordinated Data Analysis Workshop, in The IMS Source Book: Guide to the International Magnetospheric Study Data Analysis (eds C.T. Russell and D. J. Southwood), American Geophysical Union, Washington, D.C.. doi: 10.1029/SP020p0246

Author Information

  1. 1

    Department of Space Physics and Astronomy, Rice University, Houston, Texas 77001 and National Oceanic and Atmospheric Administration, Rockville, Md. 20582

  2. 2

    NOAA Space Environment Laboratory, Boulder, Colorado 80303

  3. 3

    Lockheed, Palo Alto Research Laboratory, Palo Alto, California 94304

  4. 4

    Department of Space Physics and Astronomy, Rice University, Houston, Texas 77001

  5. 5

    Sigma Data Services Corporation, National Space Science Data Center, Greenbelt, Maryland 20771

  6. 6

    National Space Science Data Center, Goddard Space Flight Center, Greenbelt, Maryland 20771

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1982

ISBN Information

Print ISBN: 9780875902289

Online ISBN: 9781118664940

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Keywords:

  • Coordinated Data Analysis Workshop (CDAW);
  • High-altitude and geosynchronous spacecraft;
  • International Magnetospheric Study (IMS);
  • Low altitude, polar spacecraft;
  • Magnetospheric response;
  • Numerical models;
  • Solar wind plasma and magnetic storm;
  • Sudden storm commencement (SSC)

Summary

We present an introduction to the CDAW process applied to the event of July 29, 1977, which contained a sudden commencement and multiple substorms. An interplanetary shock, superimposed on relatively high solar wind densities, forced the magnetopause at 0027 UT in past the position of GEOS 1 (∼6.7 RE) . Following this compression, as well as periods of southward IMF, a series of substorms culminated in a very large substorm with a peak electrojet current at 1230 UT, followed by a relatively quiet recovery phase. The ring current showed a maximum at 0600 UT and a major perturbation at 1230 UT corresponding to the last substorm. A large suite of data from sources throughout the world were analyzed by the international scientific community, concluding in the computerized workshop (CDAW 2.1) in October, 1979. Included in the analysis are results from eleven spacecraft, seven ground arrays, four numerical models, and theoretical calculations. Emphasis was on the physical processes of energy transfer and magnetospheric dynamics. We present an overview description of the event including solar wind conditions and magnetospheric response, and an overview of the CDAW-2 analysis process.