Structure and thermal evolution of the Galilean satellites
Structure and thermal evolution of the Galilean satellites
复制标题
伽利略卫星的结构和热演化
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
R. Reynolds
中科院分区：
文献类型：
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作者：
P. Cassen;R. Reynolds
描述了基于最简单假设的伽利略卫星的结构和热演变模型，确定了可能存在的最重要的复杂情况，并探讨了其后果。木卫一的内部能量来源是基于与木星和木卫二的引力相互作用引起的潮汐加热的耗散而建立的。讨论了由于电加热而提出的贡献。讨论了影响木卫一耗散率的三个论点，并讨论了卫星内部的模型。卡利斯托和木卫三被放在一起治疗，试图模拟他们不同外表的原因。结果表明，木卫三表面特征的持续存在是由于木卫三相对于木卫四较长的热演化，可能是由于较高的放射性含量造成的。对有关木卫二热演化的理论争论也作了更简要的介绍。
Models of the structure and thermal evolution of the Galilean satellites based on the simplest assumptions are described, the most important complications that are likely to exist are identified, and their consequences are explored. Io's internal energy source is modeled based on dissipation of tidal heating due to gravitational interaction with Jupiter and Europa. A proposed contribution due to electrical heating is discussed. Three arguments bearing on Io's dissipation rate are addressed and models for the satellite's interior are discussed. Callisto and Ganymede are treated together in an attempt to model the reasons for their different appearance. It is concluded that the persistence of Ganymede's surface features is due to a prolonged thermal evolution relative to Callisto, probably caused by a higher radioactive content. Theoretical arguments concerning Europa's thermal evolution are more briefly presented.