ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation

Autores
Liao, X.H.; Xu, X.Q.; Shi, Q.Q.; Huang, C.L.; Zhou, Y.H.
Año de publicación
2025
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The traditional solution of the Liouville equation which defines the relationship between the variation of Earth’s polar motion and the excitations is only an approximation and not valid for high frequency (e.g., sub-diurnal band) polar motion. Here, we present a new and complete solution of the Liouville equation (CLE), from which we try to re-understand the geophysical excitations on the polar motion in whole frequency band. We will also present some new insights into the characteristics and excitation mechanism of the Chandler wobble derived from CLE, which is important for polar motion prediction.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Liouville equation
Polar motion
Chandler wobble
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/192025
Acceder
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spelling ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville EquationLiao, X.H.Xu, X.Q.Shi, Q.Q.Huang, C.L.Zhou, Y.H.Ciencias AstronómicasLiouville equationPolar motionChandler wobbleThe traditional solution of the Liouville equation which defines the relationship between the variation of Earth’s polar motion and the excitations is only an approximation and not valid for high frequency (e.g., sub-diurnal band) polar motion. Here, we present a new and complete solution of the Liouville equation (CLE), from which we try to re-understand the geophysical excitations on the polar motion in whole frequency band. We will also present some new insights into the characteristics and excitation mechanism of the Chandler wobble derived from CLE, which is important for polar motion prediction.Facultad de Ciencias Astronómicas y Geofísicas2025-08info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/192025enginfo:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/190232info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-03-26T09:21:46Zoai:sedici.unlp.edu.ar:10915/192025Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-03-26 09:21:46.978SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
title ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
spellingShingle ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
Liao, X.H.
Ciencias Astronómicas
Liouville equation
Polar motion
Chandler wobble
title_short ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
title_full ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
title_fullStr ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
title_full_unstemmed ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
title_sort ReUnderstanding of the Earth Polar Motion with Complete Solution of Liouville Equation
dc.creator.none.fl_str_mv Liao, X.H.
Xu, X.Q.
Shi, Q.Q.
Huang, C.L.
Zhou, Y.H.
author Liao, X.H.
author_facet Liao, X.H.
Xu, X.Q.
Shi, Q.Q.
Huang, C.L.
Zhou, Y.H.
author_role author
author2 Xu, X.Q.
Shi, Q.Q.
Huang, C.L.
Zhou, Y.H.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Liouville equation
Polar motion
Chandler wobble
topic Ciencias Astronómicas
Liouville equation
Polar motion
Chandler wobble
dc.description.none.fl_txt_mv The traditional solution of the Liouville equation which defines the relationship between the variation of Earth’s polar motion and the excitations is only an approximation and not valid for high frequency (e.g., sub-diurnal band) polar motion. Here, we present a new and complete solution of the Liouville equation (CLE), from which we try to re-understand the geophysical excitations on the polar motion in whole frequency band. We will also present some new insights into the characteristics and excitation mechanism of the Chandler wobble derived from CLE, which is important for polar motion prediction.
Facultad de Ciencias Astronómicas y Geofísicas
description The traditional solution of the Liouville equation which defines the relationship between the variation of Earth’s polar motion and the excitations is only an approximation and not valid for high frequency (e.g., sub-diurnal band) polar motion. Here, we present a new and complete solution of the Liouville equation (CLE), from which we try to re-understand the geophysical excitations on the polar motion in whole frequency band. We will also present some new insights into the characteristics and excitation mechanism of the Chandler wobble derived from CLE, which is important for polar motion prediction.
publishDate 2025
dc.date.none.fl_str_mv 2025-08
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Resumen
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dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/192025
url http://sedici.unlp.edu.ar/handle/10915/192025
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/190232
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
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instname_str Universidad Nacional de La Plata
instacron_str UNLP
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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