June 22, 2009 Journal article Open Access

Antonio Meloni; Roberta Tozzi; P. De Michelis

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  <identifier identifierType="URL">https://www.openaccessrepository.it/record/131055</identifier>
  <creators>
    <creator>
      <creatorName>Antonio Meloni</creatorName>
    </creator>
    <creator>
      <creatorName>Roberta Tozzi</creatorName>
    </creator>
    <creator>
      <creatorName>P. De Michelis</creatorName>
    </creator>
  </creators>
  <titles>
    <title>On the terms of geomagnetic daily variation in Antarctica</title>
  </titles>
  <publisher>INFN Open Access Repository</publisher>
  <publicationYear>2009</publicationYear>
  <subjects>
    <subject>NEANIAS Atmospheric Research Community</subject>
    <subject>Space and Planetary Science</subject>
    <subject>Earth and Planetary Sciences (miscellaneous)</subject>
    <subject>Atmospheric Science</subject>
    <subject>Geology</subject>
    <subject>Astronomy and Astrophysics</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2009-06-22</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
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    <alternateIdentifier alternateIdentifierType="url">https://www.openaccessrepository.it/record/131055</alternateIdentifier>
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  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.5194/angeo-27-2483-2009</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://www.openaccessrepository.it/communities/itmirror</relatedIdentifier>
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  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
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  <descriptions>
    <description descriptionType="Abstract">Abstract. 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.</description>
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