The Earth’s Magnetic Field

  • J. A. Jacobs
Part of the Physics and Chemistry in Space book series (SPACE, volume 1)


Geomagnetic micropulsations are short period (usually of the order of seconds or minutes) fluctuations of the Earth’s magnetic field. They are transitory variations of small amplitude (usually less than one part in 104 of the Earth’s main field) and leave no permanent effect on the field. Like longer period disturbances such as magnetic storms they are of solar origin, in contrast to the Earth’s main field and secular variation which are of internal origin.


Solar Wind Field Line Interplanetary Magnetic Field Magnetic Storm Secular Variation 
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Special references in Chapter 1

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Copyright information

© Springer-Verlag Berlin · Heidelberg 1970

Authors and Affiliations

  • J. A. Jacobs
    • 1
  1. 1.Killam Memorial Professor of ScienceThe University of AlbertaEdmontonCanada

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