The shearing instability of ion flow at the high-latitude tail of magnetopause boundary layer

Details The shearing instability of ion flow at the high-latitude tail of magnetopause boundary layer The shearing instability of ion flow at the high-latitude tail of magnetopause boundary layer

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cha%26a..25..456l&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 25, Issue 4, p. 456-463.

Astronomy and Astrophysics

Astrophysics

Magnetopause Boundary Layer, Magnetosheath, Geopause, Shearing Instability Of Ion Flow

Scientific paper

Shearing instability of ion flow in an inhomogeneous plasma background in the magnetopause boundary layer at the high-latitude magnetotail is studied in this paper. By considering tail-aligned currents, we find that the instability excitation strongly depends on the disturbed wavelength. A quasi-critical wave number for instability is obtained. For relatively long perturbations, the instability tends to be excited at the inner edge of the boundary layer. The stable surface waves at the magnetopause and the K-H instability at the inner edge of the boundary layer can exist at the same time. This may contribute to the continuous transfer of momentum toward the magnetosphere.

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