Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind

Single point measurement turbulence cannot distinguish variations in space and time. We employ an ensemble of one- and two-point measurements in the solar wind to estimate the space-time correlation function in the comoving plasma frame. The method is illustrated using near Earth spacecraft observat...

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Autores principales: Matthaeus, W.H., Weygand, J.M., Dasso, S.
Formato: JOUR
Materias:
Orbits
Plasma turbulence
Solar wind
Space flight
Correlation lengths
Correlation time
Single-point measurement
Solar Orbiters
Space and time
Space-time correlation
Space-time correlation function
Spacetime structures
Rain
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v116_n24_p_Matthaeus
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319007_v116_n24_p_Matthaeus
record_format dspace
spelling todo:paper_00319007_v116_n24_p_Matthaeus2023-10-03T14:42:41Z Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind Matthaeus, W.H. Weygand, J.M. Dasso, S. Orbits Plasma turbulence Solar wind Space flight Correlation lengths Correlation time Single-point measurement Solar Orbiters Space and time Space-time correlation Space-time correlation function Spacetime structures Rain Single point measurement turbulence cannot distinguish variations in space and time. We employ an ensemble of one- and two-point measurements in the solar wind to estimate the space-time correlation function in the comoving plasma frame. The method is illustrated using near Earth spacecraft observations, employing ACE, Geotail, IMP-8, and Wind data sets. New results include an evaluation of both correlation time and correlation length from a single method, and a new assessment of the accuracy of the familiar frozen-in flow approximation. This novel view of the space-time structure of turbulence may prove essential in exploratory space missions such as Solar Probe Plus and Solar Orbiter for which the frozen-in flow hypothesis may not be a useful approximation. © 2016 American Physical Society. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319007_v116_n24_p_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 Orbits
Plasma turbulence
Solar wind
Space flight
Correlation lengths
Correlation time
Single-point measurement
Solar Orbiters
Space and time
Space-time correlation
Space-time correlation function
Spacetime structures
Rain
spellingShingle Orbits
Plasma turbulence
Solar wind
Space flight
Correlation lengths
Correlation time
Single-point measurement
Solar Orbiters
Space and time
Space-time correlation
Space-time correlation function
Spacetime structures
Rain
Matthaeus, W.H.
Weygand, J.M.
Dasso, S.
Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
topic_facet Orbits
Plasma turbulence
Solar wind
Space flight
Correlation lengths
Correlation time
Single-point measurement
Solar Orbiters
Space and time
Space-time correlation
Space-time correlation function
Spacetime structures
Rain
description Single point measurement turbulence cannot distinguish variations in space and time. We employ an ensemble of one- and two-point measurements in the solar wind to estimate the space-time correlation function in the comoving plasma frame. The method is illustrated using near Earth spacecraft observations, employing ACE, Geotail, IMP-8, and Wind data sets. New results include an evaluation of both correlation time and correlation length from a single method, and a new assessment of the accuracy of the familiar frozen-in flow approximation. This novel view of the space-time structure of turbulence may prove essential in exploratory space missions such as Solar Probe Plus and Solar Orbiter for which the frozen-in flow hypothesis may not be a useful approximation. © 2016 American Physical Society.
format JOUR
author Matthaeus, W.H.
Weygand, J.M.
Dasso, S.
author_facet Matthaeus, W.H.
Weygand, J.M.
Dasso, S.
author_sort Matthaeus, W.H.
title Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
title_short Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
title_full Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
title_fullStr Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
title_full_unstemmed Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
title_sort ensemble space-time correlation of plasma turbulence in the solar wind
url http://hdl.handle.net/20.500.12110/paper_00319007_v116_n24_p_Matthaeus
work_keys_str_mv AT matthaeuswh ensemblespacetimecorrelationofplasmaturbulenceinthesolarwind
AT weygandjm ensemblespacetimecorrelationofplasmaturbulenceinthesolarwind
AT dassos ensemblespacetimecorrelationofplasmaturbulenceinthesolarwind
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