HR: 11:20h
AN: SH12A-05    [Abstracts]
TI: Preliminary results on the evaluation of 3D correlation functions from ACE and WIND simultaneous data
AU: * Milano, L J
EM: lmilano@bartol.udel.edu
AF: Bartol Research Institute. University of Delaware. Universidad de Buenos Aires, 217 Sharp Lab, Newark, DE 19716 United States
AU: Matthaeus, W H
EM: yswhm@bartol.udel.edu
AF: Bartol Research Institute. University of Delaware. Universidad de Buenos Aires, 217 Sharp Lab, Newark, DE 19716 United States
AU: Smith, C W
EM: Charles.Smith@unh.edu
AF: Institute for Earth, Oceans and Space. University of New Hampshire., 207 Morse Hall, Durham, NH 03824 United States
AB: A detailed understanding of second order correlation functions provides a wealth of information about the statistical properties of turbulence, including spectra, correlation functions, cross-correlations, spectral anisotropy, and so on. The evaluation of these correlations in the solar wind from single spacecraft data has been very useful so far, but has typically been limited by the use of the the frozen-in approximation, namely that the solar wind is "rigidly moving," which is made to translate temporal series into spatial series. On the other hand, multiple spacecraft data give the possibility of measuring two point, second order spatial correlation functions directly, in principle greatly expanding the reliability and information content of the observations. We present here preliminary attempts at computing three dimensional correlation functions from simultaneous ACE and WIND data at L1. Both radially aligned [1] and mean magnetic field-aligned coordinate systems will be considered. [1] J. R. Richardson and K. I. Paularena, JGR, 106, 239 (2001)
DE: 7509 Corona
DE: 7524 Magnetic fields
DE: 7839 Nonlinear phenomena
DE: 7863 Turbulence
DE: 7894 Instruments and techniques
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting