The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
Abstract Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given location. Unfortunately, on the Antarctic co...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.331.1260 2023-05-15T13:45:50+02:00 The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica A. Meloni L. Cafarella P. De Michelis R. Tozzi The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.331.1260 http://pubs.usgs.gov/of/2007/1047/srp/srp071/of2007-1047srp071.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.331.1260 http://pubs.usgs.gov/of/2007/1047/srp/srp071/of2007-1047srp071.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.usgs.gov/of/2007/1047/srp/srp071/of2007-1047srp071.pdf text ftciteseerx 2016-09-04T00:41:37Z Abstract Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given location. Unfortunately, on the Antarctic continent the distribution of the permanent groundbased observatories does not permit a uniform coverage of the examined area. Furthermore, the magnetic records are characterized by intense external disturbances and noise that make the analysis of the magnetic field difficult. To improve our knowledge of the secular variation and detect the presence of secular variation impulses (geomagnetic jerks) in Antarctica, we use both observatory data and the CM4 quiet time magnetic field model. In particular CM4 improves our knowledge of geomagnetic jerks over Antarctica through the study of the sign changes of the secular acceleration maps. Text Antarc* Antarctic Antarctica Unknown Antarctic The Antarctic |
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ftciteseerx |
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English |
description |
Abstract Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the magnetic field at a given location. Unfortunately, on the Antarctic continent the distribution of the permanent groundbased observatories does not permit a uniform coverage of the examined area. Furthermore, the magnetic records are characterized by intense external disturbances and noise that make the analysis of the magnetic field difficult. To improve our knowledge of the secular variation and detect the presence of secular variation impulses (geomagnetic jerks) in Antarctica, we use both observatory data and the CM4 quiet time magnetic field model. In particular CM4 improves our knowledge of geomagnetic jerks over Antarctica through the study of the sign changes of the secular acceleration maps. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
A. Meloni L. Cafarella P. De Michelis R. Tozzi |
spellingShingle |
A. Meloni L. Cafarella P. De Michelis R. Tozzi The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica |
author_facet |
A. Meloni L. Cafarella P. De Michelis R. Tozzi |
author_sort |
A. Meloni |
title |
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica |
title_short |
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica |
title_full |
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica |
title_fullStr |
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica |
title_full_unstemmed |
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica |
title_sort |
contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in antarctica |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.331.1260 http://pubs.usgs.gov/of/2007/1047/srp/srp071/of2007-1047srp071.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
http://pubs.usgs.gov/of/2007/1047/srp/srp071/of2007-1047srp071.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.331.1260 http://pubs.usgs.gov/of/2007/1047/srp/srp071/of2007-1047srp071.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766231409365614592 |