论文标题
用月亮潮汐为加利利卫星提供动力
Powering the Galilean Satellites with Moon-Moon Tides
论文作者
论文摘要
有令人信服的证据证明了三个外伽利略卫星中的地下水海洋，以及在最内部的月亮IO中有内部岩浆海洋的证据。木星的潮汐力会定期变形这些物体，导致加热和变形，如果测量得出，可以探测其内部结构。除了木星饲养的潮汐之外，每个月亮还在其他潮汐上引起潮流。我们在加利利卫星中首次研究了月亮潮汐，并表明它们可以通过在其地下海洋中激发高频谐振潮汐的激发来引起大量加热。加热既发生在地壳和海洋中，并且如果海洋足够无粘性，则可以超过其他潮汐源和放射性衰变。所得的潮汐变形可用于约束地下海洋厚度。结果，我们对Jovian系统的热轨道演变和可居住性的理解可能会从根本上改变。
There is compelling evidence for subsurface water oceans among the three outer Galilean satellites, and evidence for an internal magma ocean in the innermost moon, Io. Tidal forces from Jupiter periodically deform these bodies, causing heating and deformation that, if measured, can probe their interior structures. In addition to Jupiter-raised tides, each moon also raises tides on the others. We investigate moon-moon tides for the first time in the Galilean moons, and show that they can cause significant heating through the excitation of high-frequency resonant tidal waves in their subsurface oceans. The heating occurs both in the crust and ocean, and can exceed that of other tidal sources and radiogenic decay if the ocean is inviscid enough. The resulting tidal deformation can be used to constrain subsurface ocean thickness. Our understanding of the thermal-orbital evolution and habitability of the Jovian system may be fundamentally altered as a result.
