Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/36265
Title: Comparative dynamics of the ionospheres of Venus and Mars at large solar zenith angles
Authors: Singhal, R P
Whitten, R C
Knudsen, W C
Issue Date: Apr-1990
Publisher: NISCAIR-CSIR, India
Abstract: Simple three-ion spectral models of the dynamics and ion chemistry in the upper ionospheres of Venus and Mars have been constructed by including two minor ions (H+ and O for Venus; O+ and CO for Mars) along with the major ion (O+ for Venus; O for Mars). Horizontal flow velocities and ion densities have been calculated in each case and compared with available measured data. For Venus, the present calculations yield results in agreement with earlier finite difference model studies and with experimental observations. Calculations for Mars are in agreements with the limited observational data obtained by the Viking landers. The calculated nightside ion densities on Mars are lower by a factor of two or more compared with the data obtained by the Soviet “Mars” probe. The effect of viscosity and the Coriolis acceleration on the Martian ionosphere have also been investigated. A detailed comparison has been made of pertinent characteristics of the dynamics of the ionospheres of Mars and Venus. The current knowledge of the nature of the solar wind-ionosphere interactions for the two plants has also been revised in order to assess the applicability of our model to transterminator plasma flow.
Page(s): 88-102
URI: http://nopr.niscair.res.in/handle/123456789/36265
ISSN: 0975-105X (Online); 0367-8393 (Print)
Appears in Collections:IJRSP Vol.19(2) [April 1990]

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