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  • E-Letter
  • Open Access

Sporadic aurora from Spain

Earth, Planets and Space200759:BF03352061

https://doi.org/10.1186/BF03352061

  • Received: 16 October 2007
  • Accepted: 16 November 2007
  • Published:

Abstract

Some authors have shown recently that “sporadic auroras” have occurred at relatively low latitude when the geomagnetic activity is quiet or moderate. Here we present and analyze a case of “sporadic aurora” observed from Spain on the 29 December 1845 and compare its low geomagnetic activity with other three aurorae also observed in Spain in mid-19th century.

Key words

  • Sporadic aurora
  • low geomagnetic activity

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