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DOI | 10.1038/s41561-018-0070-3 |
Cyclonic circulation of Saturn's atmosphere due to tilted convection | |
Afanasyev, Y. D.; Zhang, Y. | |
2018-03-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:3页码:164-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Saturn displays cyclonic vortices at its poles and the general atmospheric circulation at other latitudes is dominated by embedded zonal jets that display cyclonic circulation. The abundance of small-scale convective storms suggests that convection plays a role in producing and maintaining Saturn's atmospheric circulation. However, the dynamical influence of small-scale convection on Saturn's general circulation is not well understood. Here we present laboratory analogue experiments and propose that Saturn's cyclonic circulation can be explained by tilted convection in which buoyancy forces do not align with the planet's rotation axis. In our experiments-conducted with a cylindrical water tank that is heated at the bottom, cooled at the top and spun on a rotating table-warm rising plumes and cold sinking water generate small anticyclonic and cyclonic vortices that are qualitatively similar to Saturn's convective storms. Numerical simulations complement the experiments and show that this small-scale convection leads to large-scale cyclonic flow at the surface and anticyclonic circulation at the base of the fluid layer, with a polar vortex forming from the merging of smaller cyclonic storms that are driven polewards. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426311500007 |
WOS关键词 | ROTATING FLUID ; POLAR VORTEX ; DYNAMICS ; DRIVEN ; MODEL ; VORTICES ; HEXAGON ; OCEAN ; JETS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/34896 |
专题 | 地球科学 气候变化 |
作者单位 | Mem Univ Newfoundland, St John, NF, Canada |
推荐引用方式 GB/T 7714 | Afanasyev, Y. D.,Zhang, Y.. Cyclonic circulation of Saturn's atmosphere due to tilted convection[J]. NATURE GEOSCIENCE,2018,11(3):164-+. |
APA | Afanasyev, Y. D.,&Zhang, Y..(2018).Cyclonic circulation of Saturn's atmosphere due to tilted convection.NATURE GEOSCIENCE,11(3),164-+. |
MLA | Afanasyev, Y. D.,et al."Cyclonic circulation of Saturn's atmosphere due to tilted convection".NATURE GEOSCIENCE 11.3(2018):164-+. |
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