Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold

Autores
Lord, Jesse W.; Rast, Mark P.; Mckinlay, Christopher; Clyne, John; Mininni, Pablo Daniel
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We examine the decomposition of forced Taylor-Green and Arn'old-Beltrami-Childress (ABC) flows into coherent and incoherent components using an orthonormal wavelet decomposition. We ask whether wavelet coefficient thresholding based on the Donoho-Johnstone criterion can extract a coherent vortex signal while leaving behind Gaussian random noise. We find that no threshold yields a strictly Gaussian incoherent component, and that the most Gaussian incoherent flow is found for data compression lower than that achieved with the fully iterated Donoho-Johnstone threshold. Moreover, even at such low compression, the incoherent component shows clear signs of large-scale spatial correlations that are signatures of the forcings used to drive the flows. © 2012 American Institute of Physics.
Fil: Lord, Jesse W.. University of Colorado; Estados Unidos
Fil: Rast, Mark P.. University of Colorado; Estados Unidos
Fil: Mckinlay, Christopher. National Center for Atmospheric Research; Estados Unidos. University of California at Los Angeles; Estados Unidos
Fil: Clyne, John. National Center for Atmospheric Research; Estados Unidos
Fil: Mininni, Pablo Daniel. National Center for Atmospheric Research; Estados Unidos. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Materia
COHERENT STRUCTURES
COMPUTATIONAL METHODS
NUMERICAL SIMULATIONS
VORTEX DYNAMICS
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:11336/55663
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone thresholdLord, Jesse W.Rast, Mark P.Mckinlay, ChristopherClyne, JohnMininni, Pablo DanielCOHERENT STRUCTURESCOMPUTATIONAL METHODSNUMERICAL SIMULATIONSVORTEX DYNAMICShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We examine the decomposition of forced Taylor-Green and Arn'old-Beltrami-Childress (ABC) flows into coherent and incoherent components using an orthonormal wavelet decomposition. We ask whether wavelet coefficient thresholding based on the Donoho-Johnstone criterion can extract a coherent vortex signal while leaving behind Gaussian random noise. We find that no threshold yields a strictly Gaussian incoherent component, and that the most Gaussian incoherent flow is found for data compression lower than that achieved with the fully iterated Donoho-Johnstone threshold. Moreover, even at such low compression, the incoherent component shows clear signs of large-scale spatial correlations that are signatures of the forcings used to drive the flows. © 2012 American Institute of Physics.Fil: Lord, Jesse W.. University of Colorado; Estados UnidosFil: Rast, Mark P.. University of Colorado; Estados UnidosFil: Mckinlay, Christopher. National Center for Atmospheric Research; Estados Unidos. University of California at Los Angeles; Estados UnidosFil: Clyne, John. National Center for Atmospheric Research; Estados UnidosFil: Mininni, Pablo Daniel. National Center for Atmospheric Research; Estados Unidos. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaAmerican Institute of Physics2012-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55663Lord, Jesse W.; Rast, Mark P.; Mckinlay, Christopher; Clyne, John; Mininni, Pablo Daniel; Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold; American Institute of Physics; Physics of Fluids; 24; 2; 2-2012; 2510201-25102141070-6631CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pof.aip.org/resource/1/phfle6/v24/i2/p025102_s1info:eu-repo/semantics/altIdentifier/doi/10.1063/1.3683556info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:40:43Zoai:ri.conicet.gov.ar:11336/55663instacron: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:34982025-10-22 11:40:43.71CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
title Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
spellingShingle Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
Lord, Jesse W.
COHERENT STRUCTURES
COMPUTATIONAL METHODS
NUMERICAL SIMULATIONS
VORTEX DYNAMICS
title_short Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
title_full Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
title_fullStr Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
title_full_unstemmed Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
title_sort Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold
dc.creator.none.fl_str_mv Lord, Jesse W.
Rast, Mark P.
Mckinlay, Christopher
Clyne, John
Mininni, Pablo Daniel
author Lord, Jesse W.
author_facet Lord, Jesse W.
Rast, Mark P.
Mckinlay, Christopher
Clyne, John
Mininni, Pablo Daniel
author_role author
author2 Rast, Mark P.
Mckinlay, Christopher
Clyne, John
Mininni, Pablo Daniel
author2_role author
author
author
author
dc.subject.none.fl_str_mv COHERENT STRUCTURES
COMPUTATIONAL METHODS
NUMERICAL SIMULATIONS
VORTEX DYNAMICS
topic COHERENT STRUCTURES
COMPUTATIONAL METHODS
NUMERICAL SIMULATIONS
VORTEX DYNAMICS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We examine the decomposition of forced Taylor-Green and Arn'old-Beltrami-Childress (ABC) flows into coherent and incoherent components using an orthonormal wavelet decomposition. We ask whether wavelet coefficient thresholding based on the Donoho-Johnstone criterion can extract a coherent vortex signal while leaving behind Gaussian random noise. We find that no threshold yields a strictly Gaussian incoherent component, and that the most Gaussian incoherent flow is found for data compression lower than that achieved with the fully iterated Donoho-Johnstone threshold. Moreover, even at such low compression, the incoherent component shows clear signs of large-scale spatial correlations that are signatures of the forcings used to drive the flows. © 2012 American Institute of Physics.
Fil: Lord, Jesse W.. University of Colorado; Estados Unidos
Fil: Rast, Mark P.. University of Colorado; Estados Unidos
Fil: Mckinlay, Christopher. National Center for Atmospheric Research; Estados Unidos. University of California at Los Angeles; Estados Unidos
Fil: Clyne, John. National Center for Atmospheric Research; Estados Unidos
Fil: Mininni, Pablo Daniel. National Center for Atmospheric Research; Estados Unidos. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
description We examine the decomposition of forced Taylor-Green and Arn'old-Beltrami-Childress (ABC) flows into coherent and incoherent components using an orthonormal wavelet decomposition. We ask whether wavelet coefficient thresholding based on the Donoho-Johnstone criterion can extract a coherent vortex signal while leaving behind Gaussian random noise. We find that no threshold yields a strictly Gaussian incoherent component, and that the most Gaussian incoherent flow is found for data compression lower than that achieved with the fully iterated Donoho-Johnstone threshold. Moreover, even at such low compression, the incoherent component shows clear signs of large-scale spatial correlations that are signatures of the forcings used to drive the flows. © 2012 American Institute of Physics.
publishDate 2012
dc.date.none.fl_str_mv 2012-02
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/11336/55663
Lord, Jesse W.; Rast, Mark P.; Mckinlay, Christopher; Clyne, John; Mininni, Pablo Daniel; Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold; American Institute of Physics; Physics of Fluids; 24; 2; 2-2012; 2510201-2510214
1070-6631
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55663
identifier_str_mv Lord, Jesse W.; Rast, Mark P.; Mckinlay, Christopher; Clyne, John; Mininni, Pablo Daniel; Wavelet decomposition of forced turbulence: Applicability of the iterative Donoho-Johnstone threshold; American Institute of Physics; Physics of Fluids; 24; 2; 2-2012; 2510201-2510214
1070-6631
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pof.aip.org/resource/1/phfle6/v24/i2/p025102_s1
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.3683556
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 Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
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
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score 12.982451

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