The strong geomagnetic storm of March 13, 1989 - An analysis at a low latitude station

Details The strong geomagnetic storm of March 13, 1989 - An analysis at a low latitude station The strong geomagnetic storm of March 13, 1989 - An analysis at a low latitude station

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990angeo...8..337v&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 8, May 1990, p. 337-342.

Physics

7

Geomagnetic Micropulsations, Magnetic Storms, Power Spectra, Magnetometers, Satellite Observation, Tropical Regions

Scientific paper

The geomagnetic storm observed at L'Aquila on March 13, 1989 was by far the strongest event detected since the Geomagnetic Observatory foundation (1958). An analysis of this event is provided, with particular attention given to the micropulsation activity which accompanied the different phases of this storm. The main phase decrease of the H component provided huge field variations of the order of 600 nT, while spectacular micropulsation events were observed both in low frequency (T about 3 min, about 50 nT) and high frequency (T about 3.5 s, about 2 nT) bands.

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