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Empirical models of the electron temperature and density in the nightside Venus ionosphere (1979)

Theis, R. F. ; Brace, L. H. ; Mayr, H. G. ; [et al.]

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Publication Date: 2011-08-17

Description: Empirical models of the electron temperature and density of the late afternoon and nightside Venus ionosphere based on the Pioneer Venus measurements are presented. They describe the ionosphere conditions near 18 deg latitude between 150 and 700 km altitude for solar zenith angles of 80 to 180 deg, with a 10-fold decrease beyond 90 deg and a gradual decrease between 120 and 180 deg. The nightside electron density profile, the ion transport process, and electron precipitation are discussed. The high nocturnal temperatures and the well defined nightside ionopause suggest that energetic processes occur across the top of the entire nightside ionosphere, maintaining elevated temperatures.

Keywords: LUNAR AND PLANETARY EXPLORATION

Type: Science; 205; July 6

Format: text

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