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We report a statistical analysis of low frequency magnetic variations (magnetic pulsations, 0.8-7 mHz) at South Pole in Antarctica (74°S corrected geomagnetic latitude) during 1996. The results show that the pulsation power exhibits two maxima during the day, one in the local pre-midnight hours, ass...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.574.173 2023-05-15T13:56:11+02:00 1 P. Francia L. J. Lanzerotti U. Villante S. Lepidi D. Di Memmo The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.173 http://solar.njit.edu/preprints/lanzerotti1234.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.173 http://solar.njit.edu/preprints/lanzerotti1234.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://solar.njit.edu/preprints/lanzerotti1234.pdf text ftciteseerx 2016-01-08T12:40:23Z We report a statistical analysis of low frequency magnetic variations (magnetic pulsations, 0.8-7 mHz) at South Pole in Antarctica (74°S corrected geomagnetic latitude) during 1996. The results show that the pulsation power exhibits two maxima during the day, one in the local pre-midnight hours, associated with substorm occurrence, and the other in the local morning. During quiet magnetospheric conditions (Bz> 1nT), when the cusp is expected to be located poleward with respect to the station, the spectral and polarization characteristics of pulsations between 1-3 mHz suggest that resonant oscillations of the outermost closed field lines commonly occur at South Pole in the local morning. In order to investigate the spatial extension of the observed phenomena, we extend our analysis to simultaneous measurements made at Terra Nova Bay (80°S) and find that, in the polar cap, the magnetic variations exhibit different spectral and polarization characteristics. Text Antarc* Antarctica South pole South pole Unknown South Pole Terra Nova Bay |
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ftciteseerx |
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English |
description |
We report a statistical analysis of low frequency magnetic variations (magnetic pulsations, 0.8-7 mHz) at South Pole in Antarctica (74°S corrected geomagnetic latitude) during 1996. The results show that the pulsation power exhibits two maxima during the day, one in the local pre-midnight hours, associated with substorm occurrence, and the other in the local morning. During quiet magnetospheric conditions (Bz> 1nT), when the cusp is expected to be located poleward with respect to the station, the spectral and polarization characteristics of pulsations between 1-3 mHz suggest that resonant oscillations of the outermost closed field lines commonly occur at South Pole in the local morning. In order to investigate the spatial extension of the observed phenomena, we extend our analysis to simultaneous measurements made at Terra Nova Bay (80°S) and find that, in the polar cap, the magnetic variations exhibit different spectral and polarization characteristics. |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
P. Francia L. J. Lanzerotti U. Villante S. Lepidi D. Di Memmo |
spellingShingle |
P. Francia L. J. Lanzerotti U. Villante S. Lepidi D. Di Memmo 1 |
author_facet |
P. Francia L. J. Lanzerotti U. Villante S. Lepidi D. Di Memmo |
author_sort |
P. Francia |
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1 |
title_short |
1 |
title_full |
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1 |
title_full_unstemmed |
1 |
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1 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.173 http://solar.njit.edu/preprints/lanzerotti1234.pdf |
geographic |
South Pole Terra Nova Bay |
geographic_facet |
South Pole Terra Nova Bay |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_source |
http://solar.njit.edu/preprints/lanzerotti1234.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.574.173 http://solar.njit.edu/preprints/lanzerotti1234.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766263557635178496 |