Momentum transport at the Mars magnetopause

Details Momentum transport at the Mars magnetopause Momentum transport at the Mars magnetopause

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9611155p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, July 1, 1991, p. 11,155-11,163.

Physics

12

Magnetopause, Mars (Planet), Planetary Magnetospheres, Momentum Transfer, Phobos, Solar Wind

Scientific paper

The conditions leading to the transport of momentum of the shocked solar wind to the Mars magnetosphere are examined. It is argued that planetary pickup ions born in the magnetosheath and scattered across the magnetopause by local turbulent waves carry that momentum and deliver it to the magnetospheric plasma. It is further suggested that as the pickup ions experience momentum scattering interactions with the wave field in the velocity shear adjacent to the magnetosphere they are subject to a gradual internment within that region of space. The end effect of this phenomenon is that the pickup ions deliver a larger amount of momentum to the local flow than what they can subtract from it. Calculations of the efficiency of the process lead to value of the effective mean free path of the pickup ions of the order of a few hundred kilometers.

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