Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis

Detalhes bibliográficos
Autor(a) principal: Pinheiro,Katia J.
Data de Publicação: 2010
Outros Autores: Travassos,Jandyr M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Geofísica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2010000100003
Resumo: Geomagnetic jerks are abrupt changes in the secular variation generated in the Earth's core. Even the most basic characteristics of jerks as its origin and duration, are still a matter of debate in the scientific community. Data obtained by magnetic observatories and satellites are used in these studies. The main characteristic of jerks is that they are not simultaneous at the Earth's surface, with a general pattern of a first arrival in the Northern hemisphere, with a later appearance in the South by about two years. The non-simultaneous behavior of jerks is important to constrain the electrical conductivity of the lower mantle and for a better understanding on how jerks are generated in the core. The main objective of this paper is to discuss methods of detection of jerks at Vassouras (VSS) observatory (Brazil). In addition, we want to highlight the relevance of detection of jerks in observatories in the Southern hemisphere by encouraging the improvement of the data Quality and the discussion of the main geomagnetic jerks characteristics.
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spelling Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysisgeomagnetic jerksVassouras magnetic observatorywavelet analysisGeomagnetic jerks are abrupt changes in the secular variation generated in the Earth's core. Even the most basic characteristics of jerks as its origin and duration, are still a matter of debate in the scientific community. Data obtained by magnetic observatories and satellites are used in these studies. The main characteristic of jerks is that they are not simultaneous at the Earth's surface, with a general pattern of a first arrival in the Northern hemisphere, with a later appearance in the South by about two years. The non-simultaneous behavior of jerks is important to constrain the electrical conductivity of the lower mantle and for a better understanding on how jerks are generated in the core. The main objective of this paper is to discuss methods of detection of jerks at Vassouras (VSS) observatory (Brazil). In addition, we want to highlight the relevance of detection of jerks in observatories in the Southern hemisphere by encouraging the improvement of the data Quality and the discussion of the main geomagnetic jerks characteristics.Sociedade Brasileira de Geofísica2010-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2010000100003Revista Brasileira de Geofísica v.28 n.1 2010reponame:Revista Brasileira de Geofísica (Online)instname:Sociedade Brasileira de Geofísica (SBG)instacron:SBG10.1590/S0102-261X2010000100003info:eu-repo/semantics/openAccessPinheiro,Katia J.Travassos,Jandyr M.eng2010-12-01T00:00:00Zoai:scielo:S0102-261X2010000100003Revistahttp://www.scielo.br/rbgONGhttps://old.scielo.br/oai/scielo-oai.php||sbgf@sbgf.org.br1809-45110102-261Xopendoar:2010-12-01T00:00Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)false
dc.title.none.fl_str_mv Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
title Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
spellingShingle Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
Pinheiro,Katia J.
geomagnetic jerks
Vassouras magnetic observatory
wavelet analysis
title_short Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
title_full Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
title_fullStr Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
title_full_unstemmed Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
title_sort Impulses of the geomagnetic secular variation (jerks) at vassouras magnetic observatory detected by wavelet analysis
author Pinheiro,Katia J.
author_facet Pinheiro,Katia J.
Travassos,Jandyr M.
author_role author
author2 Travassos,Jandyr M.
author2_role author
dc.contributor.author.fl_str_mv Pinheiro,Katia J.
Travassos,Jandyr M.
dc.subject.por.fl_str_mv geomagnetic jerks
Vassouras magnetic observatory
wavelet analysis
topic geomagnetic jerks
Vassouras magnetic observatory
wavelet analysis
description Geomagnetic jerks are abrupt changes in the secular variation generated in the Earth's core. Even the most basic characteristics of jerks as its origin and duration, are still a matter of debate in the scientific community. Data obtained by magnetic observatories and satellites are used in these studies. The main characteristic of jerks is that they are not simultaneous at the Earth's surface, with a general pattern of a first arrival in the Northern hemisphere, with a later appearance in the South by about two years. The non-simultaneous behavior of jerks is important to constrain the electrical conductivity of the lower mantle and for a better understanding on how jerks are generated in the core. The main objective of this paper is to discuss methods of detection of jerks at Vassouras (VSS) observatory (Brazil). In addition, we want to highlight the relevance of detection of jerks in observatories in the Southern hemisphere by encouraging the improvement of the data Quality and the discussion of the main geomagnetic jerks characteristics.
publishDate 2010
dc.date.none.fl_str_mv 2010-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2010000100003
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-261X2010000100003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0102-261X2010000100003
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Geofísica
publisher.none.fl_str_mv Sociedade Brasileira de Geofísica
dc.source.none.fl_str_mv Revista Brasileira de Geofísica v.28 n.1 2010
reponame:Revista Brasileira de Geofísica (Online)
instname:Sociedade Brasileira de Geofísica (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Geofísica (SBG)
instacron_str SBG
institution SBG
reponame_str Revista Brasileira de Geofísica (Online)
collection Revista Brasileira de Geofísica (Online)
repository.name.fl_str_mv Revista Brasileira de Geofísica (Online) - Sociedade Brasileira de Geofísica (SBG)
repository.mail.fl_str_mv ||sbgf@sbgf.org.br
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