Structures of Alfven shocks - S-shaped magnetic hodogram observed at the magnetopause

Details Structures of Alfven shocks - S-shaped magnetic hodogram observed at the magnetopause Structures of Alfven shocks - S-shaped magnetic hodogram observed at the magnetopause

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..349l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, May 1989, p. 349-352.

Physics

10

Hodographs, Magnetohydrodynamic Waves, Magnetopause, Shock Waves, Space Plasmas, Polarization Characteristics, Rotating Environments, Two Fluid Models

Scientific paper

The Alfven shock structure is obtained by a two-fluid simulation code including dissipations due to resistivity, viscosity and heat conductivity. The hodogram of the tangential magnetic field component of the simulated Alfven shock is S-shaped with a 180-deg angular rotation. This is the first simulation result to show the S-shaped hodogram associated with Alfven shocks. The S-shaped hodograms have been observed at the magnetopause (Berchem and Russell, 1982). On the basis of this result, it is proposed that the magnetopause is an Alfven shock where and when the hodogram is S-shaped and rotates 180 deg.

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