Strong tidal heating in an ultralow-viscosity zone at the core-mantle boundary of the Moon
文献类型：期刊论文
| 作者 | Harada, Yuji1; Goossens, Sander2; Matsumoto, Koji3; Yan, Jianguo4; Ping, Jinsong5 ; Noda, Hirotomo3; Haruyama, Junichi6
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| 刊名 | NATURE GEOSCIENCE
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| 出版日期 | 2014-08-01 |
| 卷号 | 7期号:8页码:569-572 |
| 英文摘要 | Tidal heating of a solid planetary body occurs by viscous dissipation, depending on its internal structure(1-5) and thermal(5-8) and orbital(6-9) states. Calculations of the response of the Moon to tidal forces have considered lunar interior structure(1-5), but have not reproduced the geodetically observed dependence of dissipation on the lunar tidal period(10). The attenuation of seismic waves in the deep lunar interior(11,12) is expected to be consistent with a low-viscosity layer at the core-mantle boundary, which may explain the observed frequency dependence(13). Here we numerically simulate the viscoelastic tidal response of a Moon that contains a low-viscosity layer at the core-mantle boundary and compare with geodetic observations(10,14,15). In our simulations, a layer with a viscosity of about 2 x 10(16) Pa s leads to frequency-dependent tidal dissipation that matches tidal dissipation measurements at both monthly and annual periods. Compared with the lunar asthenosphere, the calculated viscosity is extremely low, and suggests partial melting at the lunar core-mantle boundary. We also find that tidal dissipation is not evenly distributed in the lunar interior, but localized within the low-viscosity layer, which implies that this layer may act as a thermal blanket(16) on the lunar core and influence the Moon's thermal evolution. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000341635100012 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6660]  |
| 专题 | 国家天文台_月球与深空探测研究部 |
| 作者单位 | 1.China Univ Geosci, Fac Earth Sci, Planetary Sci Inst, Wuhan 430074, Hubei, Peoples R China 2.Univ Maryland, Ctr Res & Explorat Space Sci & Technol, Baltimore, MD 21250 USA 3.Natl Inst Nat Sci, Natl Astron Observ Japan, RISE Project Off, Oshu, Iwate 0230861, Japan 4.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Hubei, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Res Div Lunar & Deep Space Explorat, Beijing 100012, Peoples R China 6.Japan Aerosp Explorat Agcy, Inst Space & Aeronaut Sci, Dept Solar Syst Sci, Sagamihara, Kanagawa 2525210, Japan |
| 推荐引用方式 GB/T 7714 | Harada, Yuji,Goossens, Sander,Matsumoto, Koji,et al. Strong tidal heating in an ultralow-viscosity zone at the core-mantle boundary of the Moon[J]. NATURE GEOSCIENCE,2014,7(8):569-572. |
| APA | Harada, Yuji.,Goossens, Sander.,Matsumoto, Koji.,Yan, Jianguo.,Ping, Jinsong.,...&Haruyama, Junichi.(2014).Strong tidal heating in an ultralow-viscosity zone at the core-mantle boundary of the Moon.NATURE GEOSCIENCE,7(8),569-572. |
| MLA | Harada, Yuji,et al."Strong tidal heating in an ultralow-viscosity zone at the core-mantle boundary of the Moon".NATURE GEOSCIENCE 7.8(2014):569-572. |
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来源：国家天文台
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