Direct injection of ionospheric O(+) into the dayside low latitude boundary layer

Details Direct injection of ionospheric O(+) into the dayside low latitude boundary layer Direct injection of ionospheric O(+) into the dayside low latitude boundary layer

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1121f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Oct. 1989, p. 1121-1124.

Physics

17

Boundary Layer Plasmas, Earth Magnetosphere, Field Aligned Currents, Interplanetary Magnetic Fields, Ion Injection, Ionospheric Ion Density, Ampte (Satellites), Atmospheric Boundary Layer, Hydrogen Ions, Oxygen Ions, Plasma Composition

Scientific paper

Observations from the AMPTE/Charge Composition Explorer (AMPTE/CCE) indicate the presence of two distinct O(+) populations in the dayside subsolar low latitude boundary layer during some periods of northward Interplanetary Magnetic Field (IMF). The first population is O(+) convected into the boundary layer from the outer magnetosphere and has been reported previously. It is suggested here that the new, second, O(+) population is injected into the dayside boundary layer directly from the high latitude ionosphere. This second population can have a significant density and distinct characteristics such as field-aligned flow relative to boundary layer H(+) that modify both the plasma composition and dynamics in the low latitude boundary layer.

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