Spatial correlation of solar wind turbulence from two point measurements

HR: 1340h
AN: SM43A-1212 [Abstracts]
TI: Spatial correlation of solar wind turbulence from two point measurements
AU: * Weygand, J M
EM: jweygand@igpp.ucla.edu
AF: Institute of Geophysics and Planetary Physics, UCLA, Box 951567 3845 Slichter Hall, Los Angeles, CA 90095-1567 United States
AU: Matthaeus, W H
EM: yswhm@bxclu.bartol.udel.edu
AF: Bartol Research Institute University of Delaware, 217 Sharp Laboratory, Newark, DE 19711 United States
AU: Dasso, S
EM: sdasso@iafe.uba.ar
AF: Instituto de Astronom｛ y F︿ica del Espacio (IAFE), CC 67 Suc. 28, Buenos Aires, 1428 Argentina
AU: Kivelson, M G
EM: mkivelson@igpp.ucla.edu
AF: Institute of Geophysics and Planetary Physics, UCLA, Box 951567 3845 Slichter Hall, Los Angeles, CA 90095-1567 United States
AU: Milano, L
EM: lmilano@udel.edu
AF: Bartol Research Institute University of Delaware, 217 Sharp Laboratory, Newark, DE 19711 United States
AU: Schwartzl, H
SM43A-1212 AF: Institute of Geophysics and Planetary Physics, UCLA, Box 951567 3845 Slichter Hall, Los Angeles, CA 90095-1567 United States
AB: Interplanetary turbulence is the best studied case of low frequency plasma turbulence and the only directly quantified instance of astrophysical turbulence. Here, correlation analysis of interplanetary magnetic turbulence is carried out, using for the first time only proper two point, single time measurements, providing a key step in unraveling the space-time structure of interplanetary turbulence, Simultaneous magnetic field data from the Wind, ACE and Cluster 2 spacecraft are analyzed to determine the spatial correlation function, the correlation (outer) scale, and the inner (Taylor) microscale near Earth orbit. This work allows us to directly quantify spatial decorrelation and permits the empirical determination of an effective magnetic Reynolds number.
UR: http://www.igpp.ucla.edu/jweygand
DE: 4400 NONLINEAR GEOPHYSICS (3200, 6944, 7839)
DE: 4490 Turbulence (3379, 4568, 7863)
DE: 6944 Nonlinear phenomena (4400, 7839)
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005