Large horizontal electric fields measured at balloon heights of the Brazilian magnetic anomaly and association to local energetic particle precipitation

W. D. Gonzalez, A. E.C. Pereira, A. L.C. Gonzalez, I. M. Martin, S. L.G. Dutra, O. Pinto, J. Wygant, F. S. Mozer

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

During a stratospheric balloon flight on April 9, 1980, large scale electric fields have been measured, for the first time, at the Brazilian Magnetic Anomaly with a double‐probe detector. We report here the results of this flight performed during a time interval with fair weather at the observing region and enhanced geomagnetic activity. These results suggest that a BAND of precipitating energetic particles, moving equatorwards with respect to the balloon, could have produced a conductivity enhancement down to the middle atmosphere, distorting the vertical atmospheric electric field and giving rise to the type of horizontal fields observed.

Original languageEnglish (US)
Pages (from-to)567-570
Number of pages4
JournalGeophysical Research Letters
Volume9
Issue number5
DOIs
StatePublished - May 1982

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