Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica)
Nine summer geomagnetic observatory data (1986-1995) from Terra Nova Bay Base, Antarctica (Lat.74.690S, Long. 164.120E, 80.040S magnetic latitude) are used to investigate the behaviour of the daily variation of the geomagnetic field at polar latitude. The instrumentation includes a proton precession...
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Istituto Nazionale di Geofisica e Vulcanologia (INGV)
1998-06-01
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doaj-fd7dd2d4895341e89480f4b20a3fd62e2020-11-24T23:37:21ZengIstituto Nazionale di Geofisica e Vulcanologia (INGV)Annals of Geophysics1593-52132037-416X1998-06-01415-610.4401/ag-3820Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica)P. PalangioA. MeloniL. CafarellaNine summer geomagnetic observatory data (1986-1995) from Terra Nova Bay Base, Antarctica (Lat.74.690S, Long. 164.120E, 80.040S magnetic latitude) are used to investigate the behaviour of the daily variation of the geomagnetic field at polar latitude. The instrumentation includes a proton precession magnetometer for total intensity |F| digital recordings; DI magnetometers for absolute measuring of the angular elements D and I and a three axis flux-gate system for acquiring H,D Z time variation data. We find that the magnetic time variation amplitude follows the solar cycle evolution and that the ratio between minimum solar median and maximum solar median is between 2-3 for intensive elements (H and Z) and 1.7 for declination(D). The solar cycle effect on geomagnetic daily variation elements amplitude in Antarctica, in comparison with previous studies, is then probably larger than expected. As a consequence, the electric current system that causes the daily magnetic field variation reveals a quite large solar cycle effect at Terra Nova Bay.http://www.annalsofgeophysics.eu/index.php/annals/article/view/3820magnetic variationsdaily variationAntartica |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
P. Palangio A. Meloni L. Cafarella |
spellingShingle |
P. Palangio A. Meloni L. Cafarella Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) Annals of Geophysics magnetic variations daily variation Antartica |
author_facet |
P. Palangio A. Meloni L. Cafarella |
author_sort |
P. Palangio |
title |
Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) |
title_short |
Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) |
title_full |
Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) |
title_fullStr |
Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) |
title_full_unstemmed |
Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) |
title_sort |
solar cycle 22 control on daily geomagnetic variation at terra nova bay (antarctica) |
publisher |
Istituto Nazionale di Geofisica e Vulcanologia (INGV) |
series |
Annals of Geophysics |
issn |
1593-5213 2037-416X |
publishDate |
1998-06-01 |
description |
Nine summer geomagnetic observatory data (1986-1995) from Terra Nova Bay Base, Antarctica (Lat.74.690S, Long. 164.120E, 80.040S magnetic latitude) are used to investigate the behaviour of the daily variation of the geomagnetic field at polar latitude. The instrumentation includes a proton precession magnetometer for total intensity |F| digital recordings; DI magnetometers for absolute measuring of the angular elements D and I and a three axis flux-gate system for acquiring H,D Z time variation data. We find that the magnetic time variation amplitude follows the solar cycle evolution and that the ratio between minimum solar median and maximum solar median is between 2-3 for intensive elements (H and Z) and 1.7 for declination(D). The solar cycle effect on geomagnetic daily variation elements amplitude in Antarctica, in comparison with previous studies, is then probably larger than expected. As a consequence, the electric current system that causes the daily magnetic field variation reveals a quite large solar cycle effect at Terra Nova Bay. |
topic |
magnetic variations daily variation Antartica |
url |
http://www.annalsofgeophysics.eu/index.php/annals/article/view/3820 |
work_keys_str_mv |
AT ppalangio solarcycle22controlondailygeomagneticvariationatterranovabayantarctica AT ameloni solarcycle22controlondailygeomagneticvariationatterranovabayantarctica AT lcafarella solarcycle22controlondailygeomagneticvariationatterranovabayantarctica |
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