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Variation of atmospheric electric field during aurorae

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Summary

The measured data of the atmospheric potential gradientE during aurorae are summarized. It is shown that aurorae in the northern hemisphere decreaseE, and aurorae in the southern hemisphere increaseE. Depending on aurorae intensities, variations ofE reach 30–35% from the mean.

Deviations ofE from normal values, on the average, begin 3.5 hours before aurora occurrence and end 3 hours after that.

Zusammenfassung

Messdaten des luftelektrischen Feldes (Potentialgefälles)E während des Auftretens von Polarlichtern werden zusammengefasst. Es wird gezeigt, dassE bei Nordlicht abgeschwächt, bei Südlicht verstärkt wird. Die Änderungen vonE erreichen 30–35% des Mittelwerts und hängen von der Stärke des Polarlichts ab. Im Mittel beginnen die Abweichungen desE von seinem normalen Wert 3.5 Stunden vor, und enden 3 Stunden nach dem Auftreten des Polarlichts.

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Lobodin, T.V., Paramonov, N.A. Variation of atmospheric electric field during aurorae. PAGEOPH 100, 167–173 (1972). https://doi.org/10.1007/BF00880237

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Keywords

  • Northern Hemisphere
  • Measured Data
  • Southern Hemisphere
  • Atmospheric Electric Field
  • Aurora Occurrence