| タイトル | Evolution of density in solar system ices |
| 著者（英） | Smoluchowski, R.; Mcwilliam, A.; Marie, M. |
| 著者所属（英） | Cairo Univ.|Texas Univ. |
| 発行日 | 1984-06-01 |
| 言語 | eng |
| 内容記述 | Pores present in ices in the solar system do not remain unchanged. In isothermal conditions they shrink, while in a thermal gradient they migrate towards the higher temperature and escape so that the ice densifies. This motion has been investigated for pure H2O- and CO2-ices in a very simple one-dimensional model assuming uniform thermal conductivity and temperature gradient. The results indicate that the densification of H2O-ice is so slow that it could be significant only for icy satellites having an internal heat source. On the other hand, CO2-ice densifies orders of magnitude faster and the effect should be important for the CO2 component of cometary nuclei. No effect is expected for icy planetary rings. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 84A40423 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/397313 |
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