Geomagnetic jerks characterization via spectral analysis
In this study we have applied spectral techniques to analyze geomagnetic field time-series provided by observatories, and compared the results with those obtained from analogous analyses of synthetic data estimated from models. Then, an algorithm is here proposed to detect the geomagnetic jerks in t...
| Những tác giả chính: | , , , , |
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| Định dạng: | Bài viết |
| Ngôn ngữ: | English |
| Được phát hành: |
Copernicus Publications
2012-05-01
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| Loạt: | Solid Earth |
| Truy cập trực tuyến: | http://www.solid-earth.net/3/131/2012/se-3-131-2012.pdf |
| _version_ | 1831747513257820160 |
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| author | B. Duka A. De Santis M. Mandea A. Isac E. Qamili |
| author_facet | B. Duka A. De Santis M. Mandea A. Isac E. Qamili |
| author_sort | B. Duka |
| collection | DOAJ |
| description | In this study we have applied spectral techniques to analyze geomagnetic field time-series provided by observatories, and compared the results with those obtained from analogous analyses of synthetic data estimated from models. Then, an algorithm is here proposed to detect the geomagnetic jerks in time-series, mainly occurring in the eastern component of the geomagnetic field. Applying such analysis to time-series generated from global models has allowed us to depict the most important space-time features of the geomagnetic jerks all over the globe, since the beginning of XXth century. Finally, the spherical harmonic power spectrum of the third derivative of the main geomagnetic field has been computed from 1960 to 2002.5, bringing new insights to understand the spatial evolution of these rapid changes of the geomagnetic field. |
| first_indexed | 2024-12-21T21:35:16Z |
| format | Article |
| id | doaj.art-46f744b77c9e4ff7aac1e8c7cc9074db |
| institution | Directory Open Access Journal |
| issn | 1869-9510 1869-9529 |
| language | English |
| last_indexed | 2024-12-21T21:35:16Z |
| publishDate | 2012-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Solid Earth |
| spelling | doaj.art-46f744b77c9e4ff7aac1e8c7cc9074db2022-12-21T18:49:31ZengCopernicus PublicationsSolid Earth1869-95101869-95292012-05-013113114810.5194/se-3-131-2012Geomagnetic jerks characterization via spectral analysisB. DukaA. De SantisM. MandeaA. IsacE. QamiliIn this study we have applied spectral techniques to analyze geomagnetic field time-series provided by observatories, and compared the results with those obtained from analogous analyses of synthetic data estimated from models. Then, an algorithm is here proposed to detect the geomagnetic jerks in time-series, mainly occurring in the eastern component of the geomagnetic field. Applying such analysis to time-series generated from global models has allowed us to depict the most important space-time features of the geomagnetic jerks all over the globe, since the beginning of XXth century. Finally, the spherical harmonic power spectrum of the third derivative of the main geomagnetic field has been computed from 1960 to 2002.5, bringing new insights to understand the spatial evolution of these rapid changes of the geomagnetic field.http://www.solid-earth.net/3/131/2012/se-3-131-2012.pdf |
| spellingShingle | B. Duka A. De Santis M. Mandea A. Isac E. Qamili Geomagnetic jerks characterization via spectral analysis Solid Earth |
| title | Geomagnetic jerks characterization via spectral analysis |
| title_full | Geomagnetic jerks characterization via spectral analysis |
| title_fullStr | Geomagnetic jerks characterization via spectral analysis |
| title_full_unstemmed | Geomagnetic jerks characterization via spectral analysis |
| title_short | Geomagnetic jerks characterization via spectral analysis |
| title_sort | geomagnetic jerks characterization via spectral analysis |
| url | http://www.solid-earth.net/3/131/2012/se-3-131-2012.pdf |
| work_keys_str_mv | AT bduka geomagneticjerkscharacterizationviaspectralanalysis AT adesantis geomagneticjerkscharacterizationviaspectralanalysis AT mmandea geomagneticjerkscharacterizationviaspectralanalysis AT aisac geomagneticjerkscharacterizationviaspectralanalysis AT eqamili geomagneticjerkscharacterizationviaspectralanalysis |