Physics
Scientific paper
May 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1137l&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 9, p. 1137-1140
Physics
25
Current Sheets, Geomagnetic Tail, Magnetic Storms, Magnetohydrodynamic Stability, Planetary Magnetotails, Adiabatic Conditions, Current Density, Entropy, Mathematical Models, Plasma Pressure
Scientific paper
A magnetofricional method is used to construct two-dimensional MHD equilibria of the Earth's magnetosphere for a given distribution of entropy functions(S = pV(exp gamma), where p is the plasma pressure and V is the tube volume per unit magnetic flux. It is found that a very thin current sheet with B (sub zeta) is less than 0.5 nu T and thickness less than 1000 km can be formed in the near-earth magnetotail (x is approximately -8 to -20R(sub e) during the growth phase of substorm. The tail current sheets are found to become thinner as the entropy or the entropy gradient increases. It is suggested that the new entropy anti-diffusion instability associated with plasma transport across field lines leads to magnetic field dipolarization and accelerates the formation of thin current sheet, which may explain the observed explosive growth phase of substorms.
Cai H. J.
Choe Gwang-Son
Lee Clarence L.
Zhang Lianchang
No associations
LandOfFree
Formation of a very thin current sheet in the near-earth magnetotail and the explosive growth phase of substorms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Formation of a very thin current sheet in the near-earth magnetotail and the explosive growth phase of substorms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation of a very thin current sheet in the near-earth magnetotail and the explosive growth phase of substorms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1060730