dc.contributor.author | Del Río Gaztelurrutia, María Teresa | |
dc.contributor.author | Sánchez Lavega, Agustín María | |
dc.contributor.author | Antuñano Martín, Arrate | |
dc.contributor.author | Legarreta Etxagibel, Jon Josu | |
dc.contributor.author | García Melendo, Enrique José | |
dc.contributor.author | Sayanagi, Kunio | |
dc.contributor.author | Hueso Alonso, Ricardo | |
dc.contributor.author | Wong, M.H. | |
dc.contributor.author | Pérez Hoyos, Santiago | |
dc.contributor.author | Rojas Palenzuela, José Félix | |
dc.contributor.author | Simon, Amy | |
dc.contributor.author | de Pater, Imke | |
dc.contributor.author | Barry, Trevor | |
dc.date.accessioned | 2023-12-28T12:44:34Z | |
dc.date.available | 2023-12-28T12:44:34Z | |
dc.date.issued | 2017-12-22 | |
dc.identifier.citation | Icarus 302 : 499-513 (2018), | es_ES |
dc.identifier.issn | 0019-1035 | |
dc.identifier.uri | http://hdl.handle.net/10810/63695 | |
dc.description.abstract | The zonal wind profile of Saturn has a unique structure at 60°N with a double-peaked jet that reaches maximum zonal velocities close to 100 ms−1. In this region, a singular group of vortices consisting of a cyclone surrounded by two anticyclones was active since 2012 until the time of this report. Our observation demonstrates that vortices in Saturn can be long-lived. The three-vortex system drifts at u = 69.0 ± 1.6 ms−1, similar to the speed of the local wind. Local motions reveal that the relative vorticity of the vortices comprising the system is ∼2–3 times the ambient zonal vorticity. In May 2015, a disturbance developed at the location of the triple vortex system, and expanded eastwards covering in two months a third of the latitudinal circle, but leaving the vortices essentially unchanged. At the time of the onset of the disturbance, a fourth vortex was present at 55°N, south of the three vortices and the evolution of the disturbance proved to be linked to the motion of this vortex. Measurements of local motions of the disturbed region show that cloud features moved essentially at the local wind speeds, suggesting that the disturbance consisted of passively advecting clouds generated by the interaction of the triple vortex system with the fourth vortex to the south. Nonlinear simulations are able to reproduce the stability and longevity of the triple vortex system under low vertical wind shear and high static stability in the upper troposphere of Saturn. | es_ES |
dc.description.sponsorship | This work was supported by the Spanish MICIIN projects AYA2015-65041-P (MINECO/FEDER, UE), Grupos Gobierno Vasco IT-765-13, and UFI11/55 from UPV/EHU. EGM is supported by the Serra Hunter Programme, Generalitat de Catalunya. A. Simon, K. Sayanagi and M.H. Wong were supported by a NASA Cassini Data Analysisgrant (NNX15AD33G and NNX15AD34G). We acknowledge the three orbits assigned by the Director Discretionary time from HST for this research (DD Program 14064, IP A. Sánchez-Lavega). We are very grateful to amateur astronomers contributing with their images to open databases such as PVOL (http://pvol2.ehu.eus/) and ALPO-Japan (http://alpo-j.asahikawa-med.ac.jp/). | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elservier | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/AYA2015-65041-P | es_ES |
dc.rights | info:eu-repo/semantics/restrictedAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | Saturn | es_ES |
dc.subject | atmosphere dynamics | es_ES |
dc.title | A planetary-scale disturbance in a long living three vortex coupled system in Saturn's atmosphere | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2017 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) | es_ES |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0019103517304529 | es_ES |
dc.identifier.doi | 10.1016/j.icarus.2017.11.029 | |
dc.departamentoes | Física aplicada I | es_ES |
dc.departamentoeu | Fisika aplikatua I | es_ES |