Quantifying scaling in the velocity field of the anisotropic turbulent solar wind

被引：31

作者：

Chapman, S. C. ^{[1
]}

Hnat, B. ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Ctr Fus Space & Astrophys, Coventry CV4 7AL, W Midlands, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2007年 / 34卷 / 17期

基金：

英国工程与自然科学研究理事会;

关键词：

SELF-SIMILARITY; INTERMITTENCY; FLUCTUATIONS; MODEL;

D O I：

10.1029/2007GL030518

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Solar wind turbulence is dominated by Alfvenic fluctuations with power spectral exponents that somewhat surprisingly evolve toward the Kolmogorov value of - 5/3, that of hydrodynamic turbulence. We analyze in situ satellite observations at 1AU and show that the turbulence decomposes linearly into two coexistent components perpendicular and parallel to the local average magnetic field and determine their distinct intermittency independent scaling exponents. The first of these is consistent with recent predictions for anisotropic MHD turbulence and the second is closer to Kolmogorov- like scaling.

引用

页数：4

共 29 条

[1]

[Anonymous], 1995, Turbulence: The Legacy of A. N. Kolmogrov

[2] Spectrum of magnetohydrodynamic turbulence [J].

Boldyrev, S .

PHYSICAL REVIEW LETTERS, 2006, 96 (11)

[3] EXPERIMENTAL-EVIDENCE FOR DIFFERENCES IN THE EXTENDED SELF-SIMILARITY SCALING LAWS BETWEEN FLUID AND MAGNETOHYDRODYNAMIC TURBULENT FLOWS [J].

CARBONE, V ;

VELTRI, P ;

BRUNO, R .

PHYSICAL REVIEW LETTERS, 1995, 75 (17) :3110-3113

[4] CASCADE MODEL FOR INTERMITTENCY IN FULLY-DEVELOPED MAGNETOHYDRODYNAMIC TURBULENCE [J].

CARBONE, V .

PHYSICAL REVIEW LETTERS, 1993, 71 (10) :1546-1548

[5] Scaling collapse and structure functions: identifying self-affinity in finite length time series [J].

Chapman, SC ;

Hnat, B ;

Rowlands, G ;

Watkins, NW .

NONLINEAR PROCESSES IN GEOPHYSICS, 2005, 12 (06) :767-774

[6] FULLY-DEVELOPED ANISOTROPIC HYDROMAGNETIC TURBULENCE IN INTER-PLANETARY SPACE [J].

DOBROWOLNY, M ;

MANGENEY, A ;

VELTRI, P .

PHYSICAL REVIEW LETTERS, 1980, 45 (02) :144-147

[7] A weak turbulence theory for incompressible magnetohydrodynamics [J].

Galtier, S ;

Nazarenko, SV ;

Newell, AC ;

Pouquet, A .

JOURNAL OF PLASMA PHYSICS, 2000, 63 :447-488

[8] Structure of the turbulent interplanetary magnetic field [J].

Giacalone, J ;

Jokipii, JR ;

Matthaeus, WH .

ASTROPHYSICAL JOURNAL, 2006, 641 (01) :L61-L64

[9] Magnetohydrodynamic turbulence revisited [J].

Goldreich, P ;

Sridhar, S .

ASTROPHYSICAL JOURNAL, 1997, 485 (02) :680-688

[10] Major unsolved problems in space plasma physics [J].

Goldstein, ML .

ASTROPHYSICS AND SPACE SCIENCE, 2001, 277 (1-2) :349-369

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