Accurate estimation of third-order moments from turbulence measurements

  title={Accurate estimation of third-order moments from turbulence measurements},
  author={John J. Podesta and Miriam A. Forman and C. W. Smith and Daniel C. Elton and Yann Malecot and Yves Gagne},
  journal={Nonlinear Processes in Geophysics},
Abstract. Politano and Pouquet's law, a generalization of Kolmogorov's four-fifths law to incompressible MHD, makes it possible to measure the energy cascade rate in incompressible MHD turbulence by means of third-order moments. In hydrodynamics, accurate measurement of third-order moments requires large amounts of data because the probability distributions of velocity-differences are nearly symmetric and the third-order moments are relatively small. Measurements of the energy cascade rate in… 

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