• ISSN 2097-1893
  • CN 10-1855/P
肖驰,李斐,鄢建国,叶茂,原田雄司,郝卫峰,邓青云. 2024. 利用固体潮研究岩石天体的深部结构. 地球与行星物理论评(中英文),55(5):537-551. DOI: 10.19975/j.dqyxx.2023-051
引用本文: 肖驰,李斐,鄢建国,叶茂,原田雄司,郝卫峰,邓青云. 2024. 利用固体潮研究岩石天体的深部结构. 地球与行星物理论评(中英文),55(5):537-551. DOI: 10.19975/j.dqyxx.2023-051
Xiao C, Li F, Yan J G, Ye M, Harada Y, Hao W F, Deng Q Y. 2024. Studying the deep structure of rocky celestial body using solid tide. Reviews of Geophysics and Planetary Physics, 55(5): 537-551 (in Chinese). DOI: 10.19975/j.dqyxx.2023-051
Citation: Xiao C, Li F, Yan J G, Ye M, Harada Y, Hao W F, Deng Q Y. 2024. Studying the deep structure of rocky celestial body using solid tide. Reviews of Geophysics and Planetary Physics, 55(5): 537-551 (in Chinese). DOI: 10.19975/j.dqyxx.2023-051

利用固体潮研究岩石天体的深部结构

Studying the deep structure of rocky celestial body using solid tide

  • 摘要: 经过地球物理学的长足发展,我们有着丰富的手段来研究地球的内部结构. 然而对于地球之外的其他天体,研究其内部结构的手段却仍然十分有限,往往依赖于轨道探测器、着陆器以及天文观测获取的大地测量数据. 在这之中,固体潮对研究其内部结构有着重要的意义. 固体潮汐形变和其带来的潮汐耗散提供了关于行星内部结构,尤其是深部核幔边界及核心部分的关键信息. 本文将全面地对利用固体潮汐参数(包括潮汐勒夫数及潮汐品质因子)研究岩石天体的深部结构进行综述. 首先对固体潮的基本理论、潮汐参数以及黏弹性模型进行了介绍,建立了天体内部结构参数与其外部固体潮汐响应之间的关系. 之后对现有利用固体潮汐参数研究水星、金星、火星及月球这些岩石天体的内部结构的工作进行了回顾与总结,可以发现固体潮汐参数是一种对天体深部结构进行约束的有效手段. 本文进一步提供了未来探测任务获取的高精度数据对研究天体深部结构的贡献. 然而,目前固体潮汐参数对天体深部结构研究中也存在一些问题. 例如不同黏弹性模型之间耗散强度的差异性问题、黏弹性模型的短周期实验数据和宏观长周期理论计算结果之间的不匹配问题等. 本文也针对这些问题进行了讨论和分析,并对未来的研究方向进行了展望.

     

    Abstract: As a result of significant advances in geophysics, we have developed a rich arsenal of geophysical methods to infer the internal structure of the Earth. However, the method we could use to infer the internal structure of celestial bodies other than the Earth are still very limited, often relying on geodetic data from orbital probes, landers and astronomical observations. Among these geodetic method, solid tides are of great importance for the study of the celestial bodies' internal structure. Solid tidal deformation and the tidal dissipation provide key information about the internal structure of the rocky celestial bodies, especially the deep structure which contains core-mantle boundary and core. In this paper, we present a comprehensive overview of the research of the deep structure of rocky celestial bodies using solid tidal parameters, including tidal Love numbers and tidal quality factor. First, the basic theory of solid tides, tidal parameters, and viscoelastic models are introduced, and the relationship between the internal structural parameters of the celestial bodies and their solid tidal response is established. This is followed by a review and summary of existing work using solid tide parameters to study the internal structure of the rocky celestial bodies like Mercury, Venus, Mars, and the Moon. Examples include the study of the viscoelastic structure at the base of the lunar mantle using tidal parameters, and the use of tidal parameters to improve the uncertainty of the Martian core radius demonstrate that using solid tidal parameters is an effective method of constraining the deep structure of the celestial bodies. We further provide the contribution of high-precision observations to be acquired by future missions to the study of internal structure. However, there still are some problems in study the internal structure of celestial bodies by solid tidal parameters. For instance, the variability of dissipation strength between different viscoelastic models, the mismatch between short-period experimental data and macroscopic long-period theoretical calculations of viscoelastic models, and so on. We also discuss and analyzes these problems and provides a vision of future research direction.

     

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