MAGNETOHYDRODYNAMIC SIMULATION OF THE RADIAL EVOLUTION AND STREAM STRUCTURE OF SOLAR-WIND TURBULENCE

被引:84
作者
ROBERTS, DA [1 ]
GHOSH, S [1 ]
GOLDSTEIN, ML [1 ]
MATTHAEUS, WH [1 ]
机构
[1] UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716
关键词
D O I
10.1103/PhysRevLett.67.3741
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present a unified interpretation of observations of interplanetary fluctuations in terms of nearly incompressible magnetohydrodynamics. Incompressive effects explain the rapid evolution of turbulence in slow wind containing the heliospheric current sheet. The relative constancy of the spectrum of "inward propagating" fluctuations compared to the rapid decline in "outward" fluctuations results from incompressive spectral transfer combined with strong dissipation of the outward fluctuations. Secondary compressive effects account for nearly pressure-balanced structures and the density fluctuation levels.
引用
收藏
页码:3741 / 3744
页数:4
相关论文
共 27 条
[1]   EVIDENCE OF LOCAL GENERATION OF ALFVENIC TURBULENCE IN THE SOLAR-WIND [J].
BAVASSANO, B ;
BRUNO, R .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1989, 94 (A9) :11977-11982
[2]   LARGE-AMPLITUDE ALFVEN WAVES IN INTERPLANETARY MEDIUM .2. [J].
BELCHER, JW ;
DAVIS, L .
JOURNAL OF GEOPHYSICAL RESEARCH, 1971, 76 (16) :3534-+
[3]   ORIGIN OF LOW CROSS-HELICITY REGIONS IN THE INNER SOLAR-WIND [J].
BRUNO, R ;
BAVASSANO, B .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1991, 96 (A5) :7841-7851
[4]   TURBULENCE VISCOSITY AND DISSIPATION IN SOLAR-WIND PLASMA [J].
COLEMAN, PJ .
ASTROPHYSICAL JOURNAL, 1968, 153 (2P1) :371-&
[5]  
COLEMAN PJ, 1968, ASTROPHYS J, V153, P1968
[6]   ESTIMATES OF SOLAR-WIND HEATING INSIDE 0.3 AU [J].
FREEMAN, JW .
GEOPHYSICAL RESEARCH LETTERS, 1988, 15 (01) :88-91
[7]   RELAXATION PROCESSES IN A TURBULENT COMPRESSIBLE MAGNETOFLUID [J].
GHOSH, S ;
MATTHAEUS, WH .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1990, 2 (07) :1520-1534
[8]   ON THE ORIGIN OF SOLAR-WIND MHD TURBULENCE - HELIOS DATA REVISITED [J].
GRAPPIN, R ;
MANGENEY, A ;
MARSCH, E .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1990, 95 (A6) :8197-8209
[9]  
GRAPPIN R, 1983, ASTRON ASTROPHYS, V126, P51
[10]  
GRAPPIN R, IN PRESS ANN GEOPHYS