Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina

Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the secular variation for the previous period is updated, producing the definitive DGRF model. Once a DGRF is released, the previously calculated magnetic anomalies are updated. We show the importance of th...

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Detalles Bibliográficos
Autores: Gianibelli, Julio C., Köhn, Jacqueline, Ghidella, Marta E.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2003
País:México
Institución:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Geofísica Internacional
Idioma:español
inglés
OAI Identifier:oai:revistagi.geofisica.unam.mx:article/906
Acceso en línea:http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906
Access Level:acceso abierto
Palabra clave:IGRF
variación secular
Observatorio Trelew (Argentina)
secular variation
Trelew observatory (Argentina)
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spelling Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, ArgentinaTesting Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, ArgentinaGianibelli, Julio C.Köhn, JacquelineGhidella, Marta E.IGRFvariación secularObservatorio Trelew (Argentina)IGRFsecular variationTrelew observatory (Argentina)Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the secular variation for the previous period is updated, producing the definitive DGRF model. Once a DGRF is released, the previously calculated magnetic anomalies are updated. We show the importance of this correction for the 1995-2000 period, in which the DGRF-IGRF difference is anomalously large. We document the validity of the correction by using data from the permanent geomagnetic Observatory of Trelew, Argentina.En los relevamientos magnéticos realizados sobre la superficie de la Tierra se utiliza el Campo Geomagnético Internacional de Referencia (IGRF) para sustraer la contribución del campo principal de la Tierra. Cada cinco años se publica un nuevo modelo de IGRF y la variación secular del período previo debe ser actualizada, generándose el denominado modelo DGRF.Una vez que el DGRF es publicado, las anomalías magnéticas calculadas previamente deben ser recalculadas. La actualización de las anomalías podría ser particularmente importante para relevamientos magnéticos regionales o para compilaciones de datos magnéticos adquiridos en diferentes épocas.En este trabajo se muestra la importancia de esta corrección, particularmente para el periodo 1995-2000, en el cual la diferencia DGRF-IGRF es llamativamente apreciable. Se documenta la validez de la corrección utilizando datos del Observatorio Geomagnético Permanente de Trelew, Argentina.Universidad Nacional Autónoma de México. Instituto de Geofísica2003-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/90610.22201/igeof.00167169p.2003.42.4.317Geofisica Internacional; Vol. 42 No. 4 (2003): October 1, 2003; 635-639Geofísica Internacional; Vol. 42 Núm. 4 (2003): Octubre 1, 2003; 635-6392954-436X0016-716910.22201/igeof.00167169p.2003.42.4reponame:Geofísica Internacionalinstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMspaenghttp://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906/859http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906/2619https://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccessoai:revistagi.geofisica.unam.mx:article/9062024-08-16T17:32:01Z
dc.title.none.fl_str_mv Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
title Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
spellingShingle Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
Gianibelli, Julio C.
IGRF
variación secular
Observatorio Trelew (Argentina)
IGRF
secular variation
Trelew observatory (Argentina)
title_short Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
title_full Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
title_fullStr Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
title_full_unstemmed Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
title_sort Testing Geomagnetic Reference Field models for 1990-2000 with data from the Trelew Geomagnetic Observatory, Argentina
dc.creator.none.fl_str_mv Gianibelli, Julio C.
Köhn, Jacqueline
Ghidella, Marta E.
author Gianibelli, Julio C.
author_facet Gianibelli, Julio C.
Köhn, Jacqueline
Ghidella, Marta E.
author_role author
author2 Köhn, Jacqueline
Ghidella, Marta E.
author2_role author
author
dc.subject.none.fl_str_mv IGRF
variación secular
Observatorio Trelew (Argentina)
IGRF
secular variation
Trelew observatory (Argentina)
topic IGRF
variación secular
Observatorio Trelew (Argentina)
IGRF
secular variation
Trelew observatory (Argentina)
description Every five years a new International Geomagnetic Reference Field (IGRF) model is released and the secular variation for the previous period is updated, producing the definitive DGRF model. Once a DGRF is released, the previously calculated magnetic anomalies are updated. We show the importance of this correction for the 1995-2000 period, in which the DGRF-IGRF difference is anomalously large. We document the validity of the correction by using data from the permanent geomagnetic Observatory of Trelew, Argentina.
publishDate 2003
dc.date.none.fl_str_mv 2003-10-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906
10.22201/igeof.00167169p.2003.42.4.317
url http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906
identifier_str_mv 10.22201/igeof.00167169p.2003.42.4.317
dc.language.none.fl_str_mv spa
eng
language spa
eng
dc.relation.none.fl_str_mv http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906/859
http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/906/2619
dc.rights.none.fl_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Instituto de Geofísica
publisher.none.fl_str_mv Universidad Nacional Autónoma de México. Instituto de Geofísica
dc.source.none.fl_str_mv Geofisica Internacional; Vol. 42 No. 4 (2003): October 1, 2003; 635-639
Geofísica Internacional; Vol. 42 Núm. 4 (2003): Octubre 1, 2003; 635-639
2954-436X
0016-7169
10.22201/igeof.00167169p.2003.42.4
reponame:Geofísica Internacional
instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron:UNAM
instname_str UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron_str UNAM
institution UNAM
reponame_str Geofísica Internacional
collection Geofísica Internacional
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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