Sydney Chapman and his Early Studies of Magnetic Disturbances

  1. Thomas A. Potemra
  1. Masahisa Sugiura

Published Online: 21 MAR 2013

DOI: 10.1029/GM028p0017

Magnetospheric Currents

Magnetospheric Currents

How to Cite

Sugiura, M. (1984) Sydney Chapman and his Early Studies of Magnetic Disturbances, in Magnetospheric Currents (ed T. A. Potemra), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM028p0017

Author Information

  1. Laboratory for Extraterrestrial Physics, Goddard Space Flight Center, Greenbelt, Maryland 20771

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1984

ISBN Information

Print ISBN: 9780875900551

Online ISBN: 9781118664131



  • Magnetospheric currents—Congresses.;
  • Plasma instabilities—Congresses


Sydney Chapman's 1918 and 1927 papers on magnetic storms and disturbances of lesser intensity and the background in which these papers were prepared are described from a historical point of view. In spite of the greatly limited availability of observations, the average characteristics of the magnetic variations during these disturbances derived by Chapman are remarkably accurate. An attempt is made to portray Chapman's rigorous and conscientious method of data analysis.