| タイトル | The upper atmosphere of Venus during morning conditions |
| 著者（英） | Fricke, K. H.; Nier, A. O.; Krankowsky, D.; Mauersberger, K.; Hunten, D. M.; Von Zahn, U. |
| 著者所属（英） | Arizona Univ.|Max-Planck-Inst. fuer Kernphysik|Bonn Univ.|Minnesota Univ. |
| 発行日 | 1980-12-30 |
| 言語 | eng |
| 内容記述 | The structure and composition of the Venus upper atmosphere between 130- and 650-km altitude were measured for a solar zenith angle of approximately 60 deg by the neutral gas mass spectrometer on board the Pioneer Venus multiprobe bus. Below 180 km a wavelike structure is quite evident in the CO2 and He number density profiles. For altitudes above 100 km a one-dimensional model of the Venus upper atmosphere during morningside conditions (MS model) is presented. Number densities at 150-km altitude are as follows: CO2 equals 4.2 x 10 to the 9th, N2 equals 1.1 x 10 to the 9th, CO equals 2.8 x 10 to the 9th, and He equals 4.8 x 10 to the 6th per cu cm. The homopause altitudes for N2 and He are at 136 and 130 km, respectively. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 81A26798 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/417572 |
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