Reconnection Outflow Associated Multi-Scale Statistics in the Earth's Plasma Sheet

Details Reconnection Outflow Associated Multi-Scale Statistics in the Earth's Plasma Sheet Reconnection Outflow Associated Multi-Scale Statistics in the Earth's Plasma Sheet

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm54a..07v&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM54A-07

Physics

2723 Magnetic Reconnection (7526, 7835), 2744 Magnetotail, 2764 Plasma Sheet, 4475 Scaling: Spatial And Temporal (1872, 3270, 4277), 4490 Turbulence (3379, 4568, 7863)

Scientific paper

The objective of the presentation is to asses the specific spectral scaling properties of magnetic reconnection associated fluctuations/turbulence at the Earthward and tailward outflow regions observed simultaneously by the Cluster and Double Star spacecraft. The comparisons provide further evidence for asymmetry of physical processes in Earthward/tailward reconnection outflow regions. The spectral parameters and spectral anisotropy angles estimated from the multi-scale magnetic fluctuations in the tailward outflow region show features which are characteristic for magnetohydrodynamic cascading turbulence in the presence of a local mean magnetic field. The multi-scale magnetic fluctuations in the Earthward outflow region are exhibiting more power and larger anisotropies, but the scale-dependent anisotropy signatures of a turbulent cascade are missing. In this region the magnetic field is more dipolar, the main processes driving fluctuations are flow breaking, dipolarization or tail current disruption for which the scale dependent spectral characteristics were not studied in detail yet.

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