Eulerian decorrelation of fluctuations in the interplanetary magnetic field

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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Detalles Bibliográficos
Autor principal: Dasso, Sergio Ricardo
Publicado: 2010
Materias:
Interplanetary medium
Magnetic fields
Solar wind
Turbulence
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v721_n1PART2_pL10_Matthaeus
http://hdl.handle.net/20.500.12110/paper_20418205_v721_n1PART2_pL10_Matthaeus
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_20418205_v721_n1PART2_pL10_Matthaeus
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spelling paper:paper_20418205_v721_n1PART2_pL10_Matthaeus2023-06-08T16:33:14Z Eulerian decorrelation of fluctuations in the interplanetary magnetic field Dasso, Sergio Ricardo Interplanetary medium Magnetic fields Solar wind Turbulence 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. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v721_n1PART2_pL10_Matthaeus http://hdl.handle.net/20.500.12110/paper_20418205_v721_n1PART2_pL10_Matthaeus
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Interplanetary medium
Magnetic fields
Solar wind
Turbulence
spellingShingle Interplanetary medium
Magnetic fields
Solar wind
Turbulence
Dasso, Sergio Ricardo
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.
author Dasso, Sergio Ricardo
author_facet Dasso, Sergio Ricardo
author_sort Dasso, Sergio Ricardo
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 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v721_n1PART2_pL10_Matthaeus
http://hdl.handle.net/20.500.12110/paper_20418205_v721_n1PART2_pL10_Matthaeus
work_keys_str_mv AT dassosergioricardo euleriandecorrelationoffluctuationsintheinterplanetarymagneticfield
_version_ 1768543298753921024

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