| タイトル | The atmosphere of Neptune - An analysis of radio occultation data acquired with Voyager 2 |
| 著者（英） | Lindal, Gunnar F. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1992-03-01 |
| 言語 | eng |
| 内容記述 | The vertical structure of Neptune's atmosphere is studied on the basis of recordings of the tracking signals received from Voyager 2 during its occultation by Neptune. The measurements began at a planetographic latitude of 62 deg north and ended near 45 deg south, and cover an altitude interval of about 5000 km. The 1-bar isobaric surface has equatorial and polar radii of 24,766 +/-15 km and 24,342 +/-30 km, respectively, and a corresponding oblateness of 0.0171 +/-0.0014. At this pressure, the temperature was 72 +/-2 K. The tropopause was detected approximately 40 km above the 1-bar level at a pressure of about 100 mbar. A comparison with IR observations indicates that the gas at the tropopause consists of 78-84-percent hydrogen by number density with the rest being mostly helium. The temperature in this region was 52 +/-2 K. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 92A26626 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/329065 |
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