caa a22 4500 386367922 CHVBK 20180307111943.0 cr unu---uuuuu 161130e198906 xx s 000 0 eng 10.1017/S0022377800014033 doi S0022377800014033 pii (NATIONALLICENCE)cambridge-10.1017/S0022377800014033 Dynamics of correlation functions with Elsässer variables for inhomogeneous MHD turbulence [Elektronische Daten] On the basis of the ideal MHD equations expressed in terms of Elsässer variables, a new set of equations has been derived that governs the dynamics of the inhomogeneous background plasma and the superimposed incompressible fluctuations. From these equations the dynamic equation for the two-point and two-time correlation tensor has been obtained, and subsequently the equations of motion for the various spectral densities related to energy, cross-helicity and residual energy or the Alfvén ratio have been established. This set of equations offers a new possibility of discussing and perhaps better understanding the mostly incompressible fluctuations observed in the solar-wind plasma and of analysing their radial evolution into interplanetary space and their spectral development. The scope of the paper is limited to giving mainly formal developments of the equations. A detailed evaluation of the many terms in the light of interplanetary observations is intended for the future, but is not presented in this paper. Copyright © Cambridge University Press 1989 Marsch E. Max-Planck-Institut für Aeronomie, D-3411 Katlenburg-Lindau, Postfach 20, Federal Republic of Germany Tu C.-Y Max-Planck-Institut für Aeronomie, D-3411 Katlenburg-Lindau, Postfach 20, Federal Republic of Germany Journal of Plasma Physics Cambridge University Press 41/3(1989-06), 479-491 0022-3778 41:3<479 1989 41 PLA https://doi.org/10.1017/S0022377800014033 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022377800014033 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marsch E. Max-Planck-Institut für Aeronomie, D-3411 Katlenburg-Lindau, Postfach 20, Federal Republic of Germany NATIONALLICENCE 700 1- Tu C.-Y Max-Planck-Institut für Aeronomie, D-3411 Katlenburg-Lindau, Postfach 20, Federal Republic of Germany NATIONALLICENCE 773 0- Journal of Plasma Physics Cambridge University Press 41/3(1989-06), 479-491 0022-3778 41:3<479 1989 41 PLA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge