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潮汐加热

潮汐加热(也称为潮汐作功潮汐折曲),经由潮汐摩擦过程产生。发生潮汐加热的天体,其轨道和自转的能量转化为自身及其卫星上地壳的热而消失。由于木星的潮汐力木卫一变型,使得木卫一成为太阳系内火山活动最活跃的天体,因此其表面上没有陨石坑[1]。木卫一轨道的离心率拉普拉斯共振效应造成它在每个公转周期中都有非常明显的潮汐隆起(高达100米)。来自这种潮汐扭曲的摩擦力使它的内部变热。理论上,一个相似但是微弱的过程也会在木卫二上发生,并造成在岩石地幔下较低层冰层的溶解。土星的卫星土卫二同样被认为在冰壳的下方有一个液态水的海洋。从土卫二的水蒸气间歇泉喷发出的物质被认为是经由这颗卫星冰壳内的潮汐摩擦产生能量造成的变动。

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参考资料

  1. ^ Peale, S. J.; Cassen, P.; Reynolds, R. T., Melting of Io by Tidal Dissipation, Science, 1979, 203 (4383): 892–894 [2010-10-12] 
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潮汐加热
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