The Venus ionopause current sheet - Thickness length scale and controlling factors

Details The Venus ionopause current sheet - Thickness length scale and controlling factors The Venus ionopause current sheet - Thickness length scale and controlling factors

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....8611430e&link_type=abstract

Journal of Geophysical Research, vol. 86, Dec. 1, 1981, p. 11430-11438.

Physics

37

Current Sheets, Ionopause, Magnetopause, Planetary Ionospheres, Plasma Diagnostics, Plasma Interactions, Venus Atmosphere, Electron Energy, Electrostatic Probes, Ion Temperature, Ionic Collisions, Magnetometers, Plasma Waves, Plasmapause, Solar Wind, Thickness, Venus, Ionosphere, Ionopause, Current Sheet, Thickness, Magnetometer, Pioneer Venus Orbiter, Plasmas, Data, Plasma Wave Detector, Size, Pvo, Altitude, Radius, Collisions, Diffusion, Waves, Turbulence, Pressure, Magnetic Fields, Electric Fields, Densi

Scientific paper

Data from the fluxgate magnetometer, plasma wave experiment and Langmuir probe aboard Pioneer Venus are used to investigate the characteristic thickness length scale of the ionopause current sheet, as well as how this length scale is controlled. Thickness is found to be a bistatic quality, large scales being associated with high field strengths and current sheet altitudes below 300 km, while smaller scales are found with lower field strengths and ionopause altitudes above 300 km. Ion collisions and plasma wave activity contribute to the formation of the broader, low-altitude ionopause current sheets. Although evidence suggests that the wave activity influences the thin ionopause current sheets, a simple model points to the control of the thin ionopause current sheets by ionospheric ion and electron temperatures

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