Eulerian decorrelation of fluctuations in the interplanetary magnetic field

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A method is devised for estimating the two-time correlation function and the associated Eulerian decorrelation timescale in turbulence.With the assumptions of a single decorrelation time and a frozen-in flow approximation for the single-point analysis, the method compares two-point correlation measu...

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Autores principales:	Matthaeus, W.H., Dasso, S., Weygand, J.M., Kivelson, M.G., Osman, K.T.
Formato:	Artículo publishedVersion
Publicado:	2010
Materias:	Interplanetary medium Magnetic fields Solar wind Turbulence
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_20418205_v721_n1PART2_pL10_Matthaeus https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_20418205_v721_n1PART2_pL10_Matthaeus_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

id	I28-R145-paper_20418205_v721_n1PART2_pL10_Matthaeus_oai
record_format	dspace
spelling	I28-R145-paper_20418205_v721_n1PART2_pL10_Matthaeus_oai2024-08-16 Matthaeus, W.H. Dasso, S. Weygand, J.M. Kivelson, M.G. Osman, K.T. 2010 A method is devised for estimating the two-time correlation function and the associated Eulerian decorrelation timescale in turbulence.With the assumptions of a single decorrelation time and a frozen-in flow approximation for the single-point analysis, the method compares two-point correlation measurements with single-point correlation measurements at the corresponding spatial lag. This method is applied to interplanetarymagnetic fieldmeasurements from the Advanced Composition Explorer and Wind spacecraft. An average Eulerian decorrelation time of 2.9 hr is found. This measures the total rate of distortion of turbulent fluid elements-including sweeping, nonlinear distortion, and wave propagation. © 2010. The American Astronomical Society. All rights reserved. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_20418205_v721_n1PART2_pL10_Matthaeus info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Astrophys. J. Lett. 2010;721(1 PART 2):L10-L13 Interplanetary medium Magnetic fields Solar wind Turbulence Eulerian decorrelation of fluctuations in the interplanetary magnetic field info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_20418205_v721_n1PART2_pL10_Matthaeus_oai
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic	Interplanetary medium Magnetic fields Solar wind Turbulence
spellingShingle	Interplanetary medium Magnetic fields Solar wind Turbulence Matthaeus, W.H. Dasso, S. Weygand, J.M. Kivelson, M.G. Osman, K.T. Eulerian decorrelation of fluctuations in the interplanetary magnetic field
topic_facet	Interplanetary medium Magnetic fields Solar wind Turbulence
description	A method is devised for estimating the two-time correlation function and the associated Eulerian decorrelation timescale in turbulence.With the assumptions of a single decorrelation time and a frozen-in flow approximation for the single-point analysis, the method compares two-point correlation measurements with single-point correlation measurements at the corresponding spatial lag. This method is applied to interplanetarymagnetic fieldmeasurements from the Advanced Composition Explorer and Wind spacecraft. An average Eulerian decorrelation time of 2.9 hr is found. This measures the total rate of distortion of turbulent fluid elements-including sweeping, nonlinear distortion, and wave propagation. © 2010. The American Astronomical Society. All rights reserved.
format	Artículo Artículo publishedVersion
author	Matthaeus, W.H. Dasso, S. Weygand, J.M. Kivelson, M.G. Osman, K.T.
author_facet	Matthaeus, W.H. Dasso, S. Weygand, J.M. Kivelson, M.G. Osman, K.T.
author_sort	Matthaeus, W.H.
title	Eulerian decorrelation of fluctuations in the interplanetary magnetic field
title_short	Eulerian decorrelation of fluctuations in the interplanetary magnetic field
title_full	Eulerian decorrelation of fluctuations in the interplanetary magnetic field
title_fullStr	Eulerian decorrelation of fluctuations in the interplanetary magnetic field
title_full_unstemmed	Eulerian decorrelation of fluctuations in the interplanetary magnetic field
title_sort	eulerian decorrelation of fluctuations in the interplanetary magnetic field
publishDate	2010
url	http://hdl.handle.net/20.500.12110/paper_20418205_v721_n1PART2_pL10_Matthaeus https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_20418205_v721_n1PART2_pL10_Matthaeus_oai
work_keys_str_mv	AT matthaeuswh euleriandecorrelationoffluctuationsintheinterplanetarymagneticfield AT dassos euleriandecorrelationoffluctuationsintheinterplanetarymagneticfield AT weygandjm euleriandecorrelationoffluctuationsintheinterplanetarymagneticfield AT kivelsonmg euleriandecorrelationoffluctuationsintheinterplanetarymagneticfield AT osmankt euleriandecorrelationoffluctuationsintheinterplanetarymagneticfield
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Eulerian decorrelation of fluctuations in the interplanetary magnetic field

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