Three-Dimensional Energy Transfer in Space Plasma Turbulence from Multipoint Measurement
Francesco Pecora, Yan Yang, W. H. Matthaeus, A. Chasapis, K. G. Klein, M. L. Stevens, S. Servidio, A. Greco, D. J. Gershman, B. L. Giles, J. L. Burch
Abstract
A novel multispacecraft technique applied to Magnetospheric Multiscale Mission data in the Earth's magnetosheath enables evaluation of the energy cascade rate from the full Yaglom's equation. The method differs from existing approaches in that it (i) is inherently three-dimensional, (ii) provides a statistically significant number of estimates from a single data stream, and (iii) allows visualization of energy flux in turbulent plasmas. This new "lag polyhedral derivative ensemble" technique exploits ensembles of tetrahedra in lag space and established curlometerlike algorithms.
Topics & Concepts
MagnetosheathPlasmaPhysicsTurbulenceEnergy cascadeComputational physicsStatistical physicsSpace (punctuation)Energy (signal processing)CascadeTetrahedronFlux (metallurgy)SpacetimeMechanicsComputer scienceMagnetosphereMagnetopauseGeometryMaterials scienceQuantum mechanicsMathematicsChemistryChromatographyMetallurgyOperating systemIonosphere and magnetosphere dynamicsSolar and Space Plasma DynamicsGeomagnetism and Paleomagnetism Studies