SAID: A turbulent plasmaspheric boundary layer (Invited)

Details SAID: A turbulent plasmaspheric boundary layer (Invited) SAID: A turbulent plasmaspheric boundary layer (Invited)

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa33c..04m&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA33C-04

Physics

[2431] Ionosphere / Ionosphere/Magnetosphere Interactions, [2768] Magnetospheric Physics / Plasmasphere, [2772] Magnetospheric Physics / Plasma Waves And Instabilities

Scientific paper

The new features of subauroral ion drifts (SAID) observed from the Cluster, DMSP, and Polar satellites are reviewed, including the discovery of SAID-related plasma waves. These observations confirm and expand on the Mishin and Puhl-Quinn [GRL, 34, L24101, 2007] concept of the SAID channel being a turbulent boundary layer, formed via a short circuit of the substorm-injected plasmoid by the plasmasphere. These observations show that SAID formation is related to enhanced lower hybrid/fast magnetosonic waves. Their excitation leads to anomalous circuit resistivity and magnetic diffusion, similar to the well-documented plasmoid-magnetic barrier problem, including impulsive penetration at the magnetopause.

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