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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ftingv:oai:www.earth-prints.org:2122/1494 2024-06-09T07:40:14+00:00 Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) Cafarella, L. Meloni, A. Palangio, P. Cafarella, L.; Istituto Nazionale di Geofisica, Roma, Italy Meloni, A.; Istituto Nazionale di Geofisica, Roma, Italy Palangio, P.; Istituto Nazionale di Geofisica, Roma, Italy Istituto Nazionale di Geofisica, Roma, Italy 1998-11 2232256 bytes application/pdf http://hdl.handle.net/2122/1494 en eng 5-6/41 (1998) http://hdl.handle.net/2122/1494 open magnetic variations daily variation Antartica 01. Atmosphere::01.03. Magnetosphere::01.03.05. Solar variability and solar wind article 1998 ftingv 2024-05-15T08:06:18Z 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. JCR Journal open Article in Journal/Newspaper Antarc* Antarctica antartic* Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Terra Nova Bay |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
magnetic variations daily variation Antartica 01. Atmosphere::01.03. Magnetosphere::01.03.05. Solar variability and solar wind |
spellingShingle |
magnetic variations daily variation Antartica 01. Atmosphere::01.03. Magnetosphere::01.03.05. Solar variability and solar wind Cafarella, L. Meloni, A. Palangio, P. Solar cycle 22 control on daily geomagnetic variation at Terra Nova Bay (Antarctica) |
topic_facet |
magnetic variations daily variation Antartica 01. Atmosphere::01.03. Magnetosphere::01.03.05. Solar variability and solar wind |
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. JCR Journal open |
author2 |
Cafarella, L.; Istituto Nazionale di Geofisica, Roma, Italy Meloni, A.; Istituto Nazionale di Geofisica, Roma, Italy Palangio, P.; Istituto Nazionale di Geofisica, Roma, Italy Istituto Nazionale di Geofisica, Roma, Italy |
format |
Article in Journal/Newspaper |
author |
Cafarella, L. Meloni, A. Palangio, P. |
author_facet |
Cafarella, L. Meloni, A. Palangio, P. |
author_sort |
Cafarella, L. |
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) |
publishDate |
1998 |
url |
http://hdl.handle.net/2122/1494 |
geographic |
Terra Nova Bay |
geographic_facet |
Terra Nova Bay |
genre |
Antarc* Antarctica antartic* |
genre_facet |
Antarc* Antarctica antartic* |
op_relation |
5-6/41 (1998) http://hdl.handle.net/2122/1494 |
op_rights |
open |
_version_ |
1801383681279918080 |