Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm11b..08g&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM11B-08
Physics
2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 2753 Numerical Modeling, 2764 Plasma Sheet
Scientific paper
The specific entropy of the Earth's plasma sheet is central to the theory of transport within the plasma sheet, relating to the stability criterion for interchange motions and thus "bubble" formation. We here use the specific entropy parameter to characterize the stability of a global MHD model in the plasma sheet during a simulated substorm. We demonstrate that the earthward-penetrating fast-flow channels are predominantly depleted of entropy, and show this non-adiabaticity is likely caused by their association with localized reconnection regions.
Guild Timothy
Spence Harlan
Wiltberger Michael
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