Main patterns of the geomagnetic field: a case study using principal component analysis
The horizontal magnetic components observed by ground-based observatories belonging to the INTERMAGNET network have been used to analyze the global pattern of the geomagnetic field variation. The approach is based on the Principal Component Analysis method applied to magnetograms from 2000 to 2005....
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| Format: | Online |
| Language: | Portuguese |
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Universidade Estadual de Campinas
2015
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| Online Access: | https://econtents.sbu.unicamp.br/inpec/index.php/physicae/article/view/13313 |
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| author | Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues |
| author_facet | Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues |
| author_sort | Klausner, Virginia |
| collection | Portal da Incubadora de Periódicos Científicos, Acadêmicos e Educacionais |
| container_reference | Physicae; Vol. 11 No. 1 (2015); 1-11 |
| description | The horizontal magnetic components observed by ground-based observatories belonging to the INTERMAGNET network have been used to analyze the global pattern of the geomagnetic field variation. The approach is based on the Principal Component Analysis method applied to magnetograms from 2000 to 2005. Quiet and disturbed days were geomagnetically distinguished. The pattern of the geomagnetic field variation fluctuates bewilderingly over time. In this work, we are interested in determining the geomagnetic field variability presenting in each principal component. The results suggest that the oscillation patterns of the first, second and third components could be explained respectively by the first one, two and three terms of the geomagnetic field spherical harmonic expansion. The principal components provide a meaningful way to appraise the overall space-time decomposition of the geomagnetic field. |
| first_indexed | 2025-10-08T14:30:12Z |
| format | Online |
| id | ojs-article-13313 |
| institution | Universidade Estadual de Campinas |
| issn | 1679-9569 |
| language | por |
| last_indexed | 2025-10-08T14:30:12Z |
| publishDate | 2015 |
| publisher | Universidade Estadual de Campinas |
| record_format | ojs |
| spelling | ojs-article-133132020-05-11T18:03:15Z Main patterns of the geomagnetic field: a case study using principal component analysis Main patterns of the geomagnetic field: a case study using principal component analysis Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues Física Campo Geomagnético Geomagnetic field Physics The horizontal magnetic components observed by ground-based observatories belonging to the INTERMAGNET network have been used to analyze the global pattern of the geomagnetic field variation. The approach is based on the Principal Component Analysis method applied to magnetograms from 2000 to 2005. Quiet and disturbed days were geomagnetically distinguished. The pattern of the geomagnetic field variation fluctuates bewilderingly over time. In this work, we are interested in determining the geomagnetic field variability presenting in each principal component. The results suggest that the oscillation patterns of the first, second and third components could be explained respectively by the first one, two and three terms of the geomagnetic field spherical harmonic expansion. The principal components provide a meaningful way to appraise the overall space-time decomposition of the geomagnetic field. The horizontal magnetic components observed by ground-based observatories belonging to the INTERMAGNET network have been used to analyze the global pattern of the geomagnetic field variation. The approach is based on the Principal Component Analysis method applied to magnetograms from 2000 to 2005. Quiet and disturbed days were geomagnetically distinguished. The pattern of the geomagnetic field variation fluctuates bewilderingly over time. In this work, we are interested in determining the geomagnetic field variability presenting in each principal component. The results suggest that the oscillation patterns of the first, second and third components could be explained respectively by the first one, two and three terms of the geomagnetic field spherical harmonic expansion. The principal components provide a meaningful way to appraise the overall space-time decomposition of the geomagnetic field. Universidade Estadual de Campinas 2015-08-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artigo avaliado pelos Pares application/pdf https://econtents.sbu.unicamp.br/inpec/index.php/physicae/article/view/13313 10.5196/physicae.v0i11.321 Physicae; Vol. 11 No. 1 (2015); 1-11 Physicae; Vol. 11 Núm. 1 (2015); 1-11 Physicae; v. 11 n. 1 (2015); 1-11 2236-3521 1679-9569 por https://econtents.sbu.unicamp.br/inpec/index.php/physicae/article/view/13313/8701 |
| spellingShingle | Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues Klausner, Virginia Domingues , Margarete Oliveira Mendes, Odim Papa, Andres Reinaldo Rodrigues Física Campo Geomagnético Geomagnetic field Physics Main patterns of the geomagnetic field: a case study using principal component analysis |
| title | Main patterns of the geomagnetic field: a case study using principal component analysis |
| title_full | Main patterns of the geomagnetic field: a case study using principal component analysis |
| title_fullStr | Main patterns of the geomagnetic field: a case study using principal component analysis |
| title_full_unstemmed | Main patterns of the geomagnetic field: a case study using principal component analysis |
| title_short | Main patterns of the geomagnetic field: a case study using principal component analysis |
| title_sort | main patterns of the geomagnetic field: a case study using principal component analysis |
| topic | Física Campo Geomagnético Geomagnetic field Physics |
| url | https://econtents.sbu.unicamp.br/inpec/index.php/physicae/article/view/13313 |
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