Observations of ULF electric field fluctuations in the dayside auroral oval
Electric field oscillations at frequencies centered below 10 Hz were measured by a payload equipped with double-probe electric field detectors which was launched into the dayside auroral oval during the Greenland rocket campaign on January 11, 1975. These oscillations exceeded an amplitude of 3 mV/m...
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1980
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ftnasantrs:oai:casi.ntrs.nasa.gov:19800055157 2023-05-15T16:29:21+02:00 Observations of ULF electric field fluctuations in the dayside auroral oval Temerin, M. Parady, B. Unclassified, Unlimited, Publicly available Jun 1, 1980 http://ntrs.nasa.gov/search.jsp?R=19800055157 unknown http://ntrs.nasa.gov/search.jsp?R=19800055157 Accession ID: 80A39327 Copyright Other Sources 46 Journal of Geophysical Research; 85; June 1 1980 ftnasantrs 2012-02-15T14:21:25Z Electric field oscillations at frequencies centered below 10 Hz were measured by a payload equipped with double-probe electric field detectors which was launched into the dayside auroral oval during the Greenland rocket campaign on January 11, 1975. These oscillations exceeded an amplitude of 3 mV/m broadband and occurred over a period of about 90 s. These oscillations occurred during a proton injection event when the quasi-static electric field was less than 20 mV/m on the average. However, during a brief 2-s interval the electric field exceeded 50 mV/m. Analysis of the amplitude as a function of the spin frequency showed that the electric field was confined to a plane perpendicular to the magnetic field. The power spectrum was of the form f to the -6.5 + or - 1.5 power, where f is the frequency over the range from 8 to 18 Hz. The existence of a large electric field fluctuation in a spatially or temporally confined region of low-amplitude turbulence suggests that this may be an observation of the low-altitude projection of a turbulent region associated with electrostatic shocks which have recently been observed at higher altitudes. Other/Unknown Material Greenland NASA Technical Reports Server (NTRS) Greenland |
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NASA Technical Reports Server (NTRS) |
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46 |
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46 Temerin, M. Parady, B. Observations of ULF electric field fluctuations in the dayside auroral oval |
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46 |
description |
Electric field oscillations at frequencies centered below 10 Hz were measured by a payload equipped with double-probe electric field detectors which was launched into the dayside auroral oval during the Greenland rocket campaign on January 11, 1975. These oscillations exceeded an amplitude of 3 mV/m broadband and occurred over a period of about 90 s. These oscillations occurred during a proton injection event when the quasi-static electric field was less than 20 mV/m on the average. However, during a brief 2-s interval the electric field exceeded 50 mV/m. Analysis of the amplitude as a function of the spin frequency showed that the electric field was confined to a plane perpendicular to the magnetic field. The power spectrum was of the form f to the -6.5 + or - 1.5 power, where f is the frequency over the range from 8 to 18 Hz. The existence of a large electric field fluctuation in a spatially or temporally confined region of low-amplitude turbulence suggests that this may be an observation of the low-altitude projection of a turbulent region associated with electrostatic shocks which have recently been observed at higher altitudes. |
format |
Other/Unknown Material |
author |
Temerin, M. Parady, B. |
author_facet |
Temerin, M. Parady, B. |
author_sort |
Temerin, M. |
title |
Observations of ULF electric field fluctuations in the dayside auroral oval |
title_short |
Observations of ULF electric field fluctuations in the dayside auroral oval |
title_full |
Observations of ULF electric field fluctuations in the dayside auroral oval |
title_fullStr |
Observations of ULF electric field fluctuations in the dayside auroral oval |
title_full_unstemmed |
Observations of ULF electric field fluctuations in the dayside auroral oval |
title_sort |
observations of ulf electric field fluctuations in the dayside auroral oval |
publishDate |
1980 |
url |
http://ntrs.nasa.gov/search.jsp?R=19800055157 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19800055157 Accession ID: 80A39327 |
op_rights |
Copyright |
_version_ |
1766019046637043712 |