| タイトル | Chaotic motion in the Jovian atmosphere |
| 本文（外部サイト） | http://hdl.handle.net/2060/19870008201 |
| 著者（英） | Pirraglia, Joseph |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1986-10-01 |
| 言語 | eng |
| 内容記述 | Strong nonlinear interactions among unstable waves and the mean flow occur in a simplified quasigeostrophic spectral model of the upper troposphere of Jupiter. The upper boundary of the layer inhibits vertical motion while at the lower boundary perturbations of the potential temperature are not permitted. On an infinite beta plane the forced flow of alternating zones of prograde and retrograde zonal winds, decreasing with height, are linearly unstable and it is shown that the nonlinear terms stabilize the flow by bounding the growth of the eddies. Explicit viscosity terms are not needed. This does not imply that energy would not cascade to the small scale flow but suggests that the nature of the large scale flow is independent of the viscosity at small scales. Numerical time integration shows the flow to be chaotic but, in some cases, with transient propagating features and meandering zonal flow. |
| NASA分類 | LUNAR AND PLANETARY EXPLORATION |
| レポートNO | 87N17634 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/151986 |
