ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica
Latitudinal and diurnal distributions of spectral power and spatial coherency parameters of the geomagnetic variations in the Pc5-6 (1–6 mHz) frequency range are analyzed using data of magnetometer stations in Antarctica. The available stations give the possibility to form a latitude chain along the...
Published in: | Journal of Geophysical Research: Space Physics |
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American Geophysical Union
2002
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Online Access: | http://nora.nerc.ac.uk/id/eprint/17534/ http://www.agu.org/pubs/crossref/2002/2001JA900143.shtml |
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ftnerc:oai:nora.nerc.ac.uk:17534 2023-05-15T13:45:12+02:00 ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica Yagova, N.V. Lanzerotti, L.J. Villante, U. Pilipenko, V.A. Lepidi, S. Francia, P. Papitashvili, V.O. Rodger, A.S. 2002 http://nora.nerc.ac.uk/id/eprint/17534/ http://www.agu.org/pubs/crossref/2002/2001JA900143.shtml unknown American Geophysical Union Yagova, N.V.; Lanzerotti, L.J.; Villante, U.; Pilipenko, V.A.; Lepidi, S.; Francia, P.; Papitashvili, V.O.; Rodger, A.S. 2002 ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica. Journal of Geophysical Research, 107 (A8), 1195. 12, pp. https://doi.org/10.1029/2001JA900143 <https://doi.org/10.1029/2001JA900143> Publication - Article PeerReviewed 2002 ftnerc https://doi.org/10.1029/2001JA900143 2023-02-04T19:31:09Z Latitudinal and diurnal distributions of spectral power and spatial coherency parameters of the geomagnetic variations in the Pc5-6 (1–6 mHz) frequency range are analyzed using data of magnetometer stations in Antarctica. The available stations give the possibility to form a latitude chain along the geomagnetic meridian 40°E stretching from magnetic latitude 69°S to 86°S. Long-period ULF activity at polar cap latitudes is characterized by lower amplitudes and wider spectra with lower central frequencies as compared with typical auroral Pc5 pulsations. The meridional distribution of average Pc5-6 spectral power is nonmonotonic and has a minimum near 80°. In general, the low-frequency broadband ULF activities in the polar cap and at auroral latitudes seem to be decoupled. This long-period ULF activity in the polar cap could be an image of wave activity in the tail lobes or the manifestation of turbulent component of the ionospheric convection at very high latitudes, but this requires further investigation. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Natural Environment Research Council: NERC Open Research Archive Journal of Geophysical Research: Space Physics 107 A8 SMP 22-1 SMP 22-12 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Latitudinal and diurnal distributions of spectral power and spatial coherency parameters of the geomagnetic variations in the Pc5-6 (1–6 mHz) frequency range are analyzed using data of magnetometer stations in Antarctica. The available stations give the possibility to form a latitude chain along the geomagnetic meridian 40°E stretching from magnetic latitude 69°S to 86°S. Long-period ULF activity at polar cap latitudes is characterized by lower amplitudes and wider spectra with lower central frequencies as compared with typical auroral Pc5 pulsations. The meridional distribution of average Pc5-6 spectral power is nonmonotonic and has a minimum near 80°. In general, the low-frequency broadband ULF activities in the polar cap and at auroral latitudes seem to be decoupled. This long-period ULF activity in the polar cap could be an image of wave activity in the tail lobes or the manifestation of turbulent component of the ionospheric convection at very high latitudes, but this requires further investigation. |
format |
Article in Journal/Newspaper |
author |
Yagova, N.V. Lanzerotti, L.J. Villante, U. Pilipenko, V.A. Lepidi, S. Francia, P. Papitashvili, V.O. Rodger, A.S. |
spellingShingle |
Yagova, N.V. Lanzerotti, L.J. Villante, U. Pilipenko, V.A. Lepidi, S. Francia, P. Papitashvili, V.O. Rodger, A.S. ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica |
author_facet |
Yagova, N.V. Lanzerotti, L.J. Villante, U. Pilipenko, V.A. Lepidi, S. Francia, P. Papitashvili, V.O. Rodger, A.S. |
author_sort |
Yagova, N.V. |
title |
ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica |
title_short |
ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica |
title_full |
ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica |
title_fullStr |
ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica |
title_full_unstemmed |
ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica |
title_sort |
ulf pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in antarctica |
publisher |
American Geophysical Union |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/17534/ http://www.agu.org/pubs/crossref/2002/2001JA900143.shtml |
genre |
Antarc* Antarctica Antarctica Journal |
genre_facet |
Antarc* Antarctica Antarctica Journal |
op_relation |
Yagova, N.V.; Lanzerotti, L.J.; Villante, U.; Pilipenko, V.A.; Lepidi, S.; Francia, P.; Papitashvili, V.O.; Rodger, A.S. 2002 ULF Pc5-6 magnetic activity in the polar cap as observed along a geomagnetic meridian in Antarctica. Journal of Geophysical Research, 107 (A8), 1195. 12, pp. https://doi.org/10.1029/2001JA900143 <https://doi.org/10.1029/2001JA900143> |
op_doi |
https://doi.org/10.1029/2001JA900143 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
107 |
container_issue |
A8 |
container_start_page |
SMP 22-1 |
op_container_end_page |
SMP 22-12 |
_version_ |
1766216366617001984 |