Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation

Autores
de Haro Barbás, Blas Federico; Elias, Ana Georgina; Cnossen, Ingrid; Zossi Artigas, Marta Maria
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The daily amplitude of the solar quiet (Sq) magnetic variation of the horizontal intensity, H, of observatories at low and midlatitudes is analyzed, in search of significant long‐term trends. These trends are expected based on secular variations of the Earth's magnetic field (B) and increasing concentrations of greenhouse gases which can affect Sq for instance through their effect on ionospheric conductivities and E‐region electron concentration. The hourly horizontal geomagnetic field component, H, measured at Apia, Fredericksburg, Hermanus, Bangui, and Trivandrum was analyzed for the period 1960–2000. The solar activity effect was filtered out from the daily Sq amplitude of H, and then linear trends were calculated and compared to trend values obtained from the Coupled Magnetosphere‐Ionosphere‐Thermosphere model. Linear trends were calculated separately for periods of different secular trends in the magnetic field intensity, B. We found significant trends in experimental data for Apia, Fredericksburg, Hermanus, and for the period 1960–1983 for Bangui. There is reasonable quantitative agreement between experimental and simulated trends, and a qualitative agreement with trends expected from the secular trend in B.
Fil: de Haro Barbás, Blas Federico. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Elias, Ana Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Cnossen, Ingrid. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Zossi Artigas, Marta Maria. British Antartic Survey; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Materia
SQ
MAGNETIC FIELD
TREND
MODEL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/77314
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variationde Haro Barbás, Blas FedericoElias, Ana GeorginaCnossen, IngridZossi Artigas, Marta MariaSQMAGNETIC FIELDTRENDMODELhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The daily amplitude of the solar quiet (Sq) magnetic variation of the horizontal intensity, H, of observatories at low and midlatitudes is analyzed, in search of significant long‐term trends. These trends are expected based on secular variations of the Earth's magnetic field (B) and increasing concentrations of greenhouse gases which can affect Sq for instance through their effect on ionospheric conductivities and E‐region electron concentration. The hourly horizontal geomagnetic field component, H, measured at Apia, Fredericksburg, Hermanus, Bangui, and Trivandrum was analyzed for the period 1960–2000. The solar activity effect was filtered out from the daily Sq amplitude of H, and then linear trends were calculated and compared to trend values obtained from the Coupled Magnetosphere‐Ionosphere‐Thermosphere model. Linear trends were calculated separately for periods of different secular trends in the magnetic field intensity, B. We found significant trends in experimental data for Apia, Fredericksburg, Hermanus, and for the period 1960–1983 for Bangui. There is reasonable quantitative agreement between experimental and simulated trends, and a qualitative agreement with trends expected from the secular trend in B.Fil: de Haro Barbás, Blas Federico. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; ArgentinaFil: Elias, Ana Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Cnossen, Ingrid. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; ArgentinaFil: Zossi Artigas, Marta Maria. British Antartic Survey; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaAmerican Geophysical Union2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/77314de Haro Barbás, Blas Federico; Elias, Ana Georgina; Cnossen, Ingrid; Zossi Artigas, Marta Maria; Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation; American Geophysical Union; Journal of Geophysical Research; 118; 6; 1-2013; 3712-37180148-0227CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1002/jgra.50352info:eu-repo/semantics/altIdentifier/doi/10.1002/jgra.50352, 2013info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:29:53Zoai:ri.conicet.gov.ar:11336/77314instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:29:54.162CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
title Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
spellingShingle Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
de Haro Barbás, Blas Federico
SQ
MAGNETIC FIELD
TREND
MODEL
title_short Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
title_full Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
title_fullStr Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
title_full_unstemmed Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
title_sort Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation
dc.creator.none.fl_str_mv de Haro Barbás, Blas Federico
Elias, Ana Georgina
Cnossen, Ingrid
Zossi Artigas, Marta Maria
author de Haro Barbás, Blas Federico
author_facet de Haro Barbás, Blas Federico
Elias, Ana Georgina
Cnossen, Ingrid
Zossi Artigas, Marta Maria
author_role author
author2 Elias, Ana Georgina
Cnossen, Ingrid
Zossi Artigas, Marta Maria
author2_role author
author
author
dc.subject.none.fl_str_mv SQ
MAGNETIC FIELD
TREND
MODEL
topic SQ
MAGNETIC FIELD
TREND
MODEL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The daily amplitude of the solar quiet (Sq) magnetic variation of the horizontal intensity, H, of observatories at low and midlatitudes is analyzed, in search of significant long‐term trends. These trends are expected based on secular variations of the Earth's magnetic field (B) and increasing concentrations of greenhouse gases which can affect Sq for instance through their effect on ionospheric conductivities and E‐region electron concentration. The hourly horizontal geomagnetic field component, H, measured at Apia, Fredericksburg, Hermanus, Bangui, and Trivandrum was analyzed for the period 1960–2000. The solar activity effect was filtered out from the daily Sq amplitude of H, and then linear trends were calculated and compared to trend values obtained from the Coupled Magnetosphere‐Ionosphere‐Thermosphere model. Linear trends were calculated separately for periods of different secular trends in the magnetic field intensity, B. We found significant trends in experimental data for Apia, Fredericksburg, Hermanus, and for the period 1960–1983 for Bangui. There is reasonable quantitative agreement between experimental and simulated trends, and a qualitative agreement with trends expected from the secular trend in B.
Fil: de Haro Barbás, Blas Federico. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Elias, Ana Georgina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Cnossen, Ingrid. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Física; Argentina
Fil: Zossi Artigas, Marta Maria. British Antartic Survey; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
description The daily amplitude of the solar quiet (Sq) magnetic variation of the horizontal intensity, H, of observatories at low and midlatitudes is analyzed, in search of significant long‐term trends. These trends are expected based on secular variations of the Earth's magnetic field (B) and increasing concentrations of greenhouse gases which can affect Sq for instance through their effect on ionospheric conductivities and E‐region electron concentration. The hourly horizontal geomagnetic field component, H, measured at Apia, Fredericksburg, Hermanus, Bangui, and Trivandrum was analyzed for the period 1960–2000. The solar activity effect was filtered out from the daily Sq amplitude of H, and then linear trends were calculated and compared to trend values obtained from the Coupled Magnetosphere‐Ionosphere‐Thermosphere model. Linear trends were calculated separately for periods of different secular trends in the magnetic field intensity, B. We found significant trends in experimental data for Apia, Fredericksburg, Hermanus, and for the period 1960–1983 for Bangui. There is reasonable quantitative agreement between experimental and simulated trends, and a qualitative agreement with trends expected from the secular trend in B.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/77314
de Haro Barbás, Blas Federico; Elias, Ana Georgina; Cnossen, Ingrid; Zossi Artigas, Marta Maria; Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation; American Geophysical Union; Journal of Geophysical Research; 118; 6; 1-2013; 3712-3718
0148-0227
CONICET Digital
CONICET
url http://hdl.handle.net/11336/77314
identifier_str_mv de Haro Barbás, Blas Federico; Elias, Ana Georgina; Cnossen, Ingrid; Zossi Artigas, Marta Maria; Long-term changes in solar quiet (Sq) geomagnetic variations related to Earth?s magnetic field secular variation; American Geophysical Union; Journal of Geophysical Research; 118; 6; 1-2013; 3712-3718
0148-0227
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1002/jgra.50352
info:eu-repo/semantics/altIdentifier/doi/10.1002/jgra.50352, 2013
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846082772630765568
score 13.22299

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