论文标题
动态的欧罗巴海洋显示出瞬态的泰勒柱和对流，由冰融化和盐度驱动
Dynamic Europa ocean shows transient Taylor columns and convection driven by ice melting and salinity
论文作者
论文摘要
欧罗巴的深海（约100公里）的木星的月球被厚厚的冰壳覆盖，是太阳系中最可能找到外星生命的地方之一。然而，它的海洋动力及其与冰盖的互动很少受到关注。先前的研究表明，使用全球模型，欧罗巴的海洋是动荡的，并考虑了非静态效应和全科氏菌作用。在这里，我们添加关键元素，包括一致的顶部和底部加热边界条件以及冰冷的壳融化和冻结对海洋盐度的影响。我们发现弱分层由盐度变化主导。海洋表现出强烈的瞬态对流，涡流和区域喷气机。在泰勒柱上组织的瞬态运动平行于欧罗巴的旋转轴，在切线缸的外部是静态的，并在气缸内传播赤道。子午海洋热传输足以产生几乎均匀的冰厚度，预计将在未来的任务中观察到。
The deep (~100 km) ocean of Europa, Jupiter's moon, covered by a thick icy shell, is one of the most probable places in the solar system to find extraterrestrial life. Yet, its ocean dynamics and its interaction with the ice cover have received little attention. Previous studies suggested that Europa's ocean is turbulent using a global model and taking into account non-hydrostatic effects and the full Coriolis force. Here we add critical elements, including consistent top and bottom heating boundary conditions and the effects of icy shell melting and freezing on ocean salinity. We find weak stratification that is dominated by salinity variations. The ocean exhibits strong transient convection, eddies, and zonal jets. Transient motions organize in Taylor columns parallel to Europa's axis of rotation, are static outside of the tangent cylinder and propagate equatorward within the cylinder. The meridional oceanic heat transport is intense enough to result in a nearly uniform ice thickness, that is expected to be observable in future missions.
