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Abstract:

Time decorrelation in isotropic incompressible magnetohydrodynamic (MHD) turbulence is studied using three-dimensional numerical simulation. Eulerian and wavenumber-dependent correlation functions are obtained. Scaling with wavenumber separates effects of nonlinear distortion and effects of random sweeping and Alfvénic wave propagation. Results show that the dominant effect is the combined influence of convective sweeping and Alfvénic propagation, both being nonlocal effects on small-scale fluctuations by large-scale fluctuations. This conclusion finds applications in space plasma observation, particle scattering, predictability, and turbulence theory. © Europhysics Letters Association.

Registro:

Documento: Artículo
Título:Time decorrelation in isotropic magnetohydrodynamic turbulence
Autor:Servidio, S.; Carbone, V.; Dmitruk, P.; Matthaeus, W.H.
Filiación:Dipartimento di Fisica, Università della Calabria, I-87036 Cosenza, Italy
IPCF/CNR, Università della Calabria, I-87036 Cosenza, Italy
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and IFIBA/CONICET, Buenos Aires 1428, Argentina
Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States
Año:2011
Volumen:96
Número:5
DOI: http://dx.doi.org/10.1209/0295-5075/96/55003
Título revista:EPL
Título revista abreviado:EPL
ISSN:02955075
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v96_n5_p_Servidio

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Citas:

---------- APA ----------
Servidio, S., Carbone, V., Dmitruk, P. & Matthaeus, W.H. (2011) . Time decorrelation in isotropic magnetohydrodynamic turbulence. EPL, 96(5).
http://dx.doi.org/10.1209/0295-5075/96/55003
---------- CHICAGO ----------
Servidio, S., Carbone, V., Dmitruk, P., Matthaeus, W.H. "Time decorrelation in isotropic magnetohydrodynamic turbulence" . EPL 96, no. 5 (2011).
http://dx.doi.org/10.1209/0295-5075/96/55003
---------- MLA ----------
Servidio, S., Carbone, V., Dmitruk, P., Matthaeus, W.H. "Time decorrelation in isotropic magnetohydrodynamic turbulence" . EPL, vol. 96, no. 5, 2011.
http://dx.doi.org/10.1209/0295-5075/96/55003
---------- VANCOUVER ----------
Servidio, S., Carbone, V., Dmitruk, P., Matthaeus, W.H. Time decorrelation in isotropic magnetohydrodynamic turbulence. EPL. 2011;96(5).
http://dx.doi.org/10.1209/0295-5075/96/55003