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Large horizontal electric fields measured at balloon heights of the Brazilian magnetic anomaly and association to local energetic particle precipitation
Author(s) -
Gonzalez W. D.,
Pereira A. E. C.,
Gonzalez A. L. C.,
Martin I. M.,
Dutra S. L. G.,
Pinto O.,
Wygant J.,
Mozer F. S.
Publication year - 1982
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl009i005p00567
Subject(s) - earth's magnetic field , electric field , atmosphere (unit) , anomaly (physics) , magnetic field , physics , atmospheric sciences , balloon , precipitation , electron precipitation , geophysics , environmental science , particle (ecology) , meteorology , geodesy , geology , condensed matter physics , magnetosphere , medicine , oceanography , quantum mechanics , cardiology
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.