On the terms of geomagnetic daily variation in Antarctica
The target of this work is to investigate the nature of magnetic perturbations produced by ionospheric and magnetospheric currents as recorded at high-latitude geomagnetic stations. In particular, we investigate the effects of these currents on geomagnetic data recorded in Antarctica. To this purpos...
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ftcopernicus:oai:publications.copernicus.org:angeo36839 2023-05-15T13:36:36+02:00 On the terms of geomagnetic daily variation in Antarctica Michelis, P. Tozzi, R. Meloni, A. 2018-09-27 application/pdf https://doi.org/10.5194/angeo-27-2483-2009 https://angeo.copernicus.org/articles/27/2483/2009/ eng eng doi:10.5194/angeo-27-2483-2009 https://angeo.copernicus.org/articles/27/2483/2009/ eISSN: 1432-0576 Text 2018 ftcopernicus https://doi.org/10.5194/angeo-27-2483-2009 2020-07-20T16:26:39Z The target of this work is to investigate the nature of magnetic perturbations produced by ionospheric and magnetospheric currents as recorded at high-latitude geomagnetic stations. In particular, we investigate the effects of these currents on geomagnetic data recorded in Antarctica. To this purpose we apply a mathematical method, known as Natural Orthogonal Composition, to analyze the magnetic field disturbances along the three geomagnetic field components ( X , Y and Z ) recorded at Mario Zucchelli Station (IAGA code TNB; geographic coordinates: 74.7° S, 164.1° E) from 1995 to 1998. Using this type of analysis, we characterize the dominant modes of the geomagnetic field daily variability through a set of empirical orthogonal functions (EOFs). While such mathematically independent EOFs do not necessarily represent physically independent modes of variability, we find that some of them are actually related to well known current patterns located at high latitudes. Text Antarc* Antarctica Copernicus Publications: E-Journals Mario Zucchelli ENVELOPE(164.123,164.123,-74.695,-74.695) Mario Zucchelli Station ENVELOPE(164.117,164.117,-74.700,-74.700) Annales Geophysicae 27 6 2483 2490 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The target of this work is to investigate the nature of magnetic perturbations produced by ionospheric and magnetospheric currents as recorded at high-latitude geomagnetic stations. In particular, we investigate the effects of these currents on geomagnetic data recorded in Antarctica. To this purpose we apply a mathematical method, known as Natural Orthogonal Composition, to analyze the magnetic field disturbances along the three geomagnetic field components ( X , Y and Z ) recorded at Mario Zucchelli Station (IAGA code TNB; geographic coordinates: 74.7° S, 164.1° E) from 1995 to 1998. Using this type of analysis, we characterize the dominant modes of the geomagnetic field daily variability through a set of empirical orthogonal functions (EOFs). While such mathematically independent EOFs do not necessarily represent physically independent modes of variability, we find that some of them are actually related to well known current patterns located at high latitudes. |
format |
Text |
author |
Michelis, P. Tozzi, R. Meloni, A. |
spellingShingle |
Michelis, P. Tozzi, R. Meloni, A. On the terms of geomagnetic daily variation in Antarctica |
author_facet |
Michelis, P. Tozzi, R. Meloni, A. |
author_sort |
Michelis, P. |
title |
On the terms of geomagnetic daily variation in Antarctica |
title_short |
On the terms of geomagnetic daily variation in Antarctica |
title_full |
On the terms of geomagnetic daily variation in Antarctica |
title_fullStr |
On the terms of geomagnetic daily variation in Antarctica |
title_full_unstemmed |
On the terms of geomagnetic daily variation in Antarctica |
title_sort |
on the terms of geomagnetic daily variation in antarctica |
publishDate |
2018 |
url |
https://doi.org/10.5194/angeo-27-2483-2009 https://angeo.copernicus.org/articles/27/2483/2009/ |
long_lat |
ENVELOPE(164.123,164.123,-74.695,-74.695) ENVELOPE(164.117,164.117,-74.700,-74.700) |
geographic |
Mario Zucchelli Mario Zucchelli Station |
geographic_facet |
Mario Zucchelli Mario Zucchelli Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
eISSN: 1432-0576 |
op_relation |
doi:10.5194/angeo-27-2483-2009 https://angeo.copernicus.org/articles/27/2483/2009/ |
op_doi |
https://doi.org/10.5194/angeo-27-2483-2009 |
container_title |
Annales Geophysicae |
container_volume |
27 |
container_issue |
6 |
container_start_page |
2483 |
op_container_end_page |
2490 |
_version_ |
1766081440444841984 |