气候变化领域集成服务门户(CCPortal): Tides on Other Earths: Implications for Exoplanet and Palaeo-Tidal Simulations

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DOI	10.1029/2019GL085746
	Tides on Other Earths: Implications for Exoplanet and Palaeo-Tidal Simulations
	Blackledge B.W.; Green J.A.M.; Barnes R.; Way M.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	A key controller of a planet's rotational evolution, and hence habitability, is tidal dissipation, which on Earth is dominated by the ocean tides. Because exoplanet or deep-time Earth topographies are unknown, a statistical ensemble is used to constrain possible tidal dissipation rates on an Earth-like planet. A dedicated tidal model is used together with 120 random continental configurations to simulate Earth's semidiurnal lunar tide. The results show a possible ocean tidal dissipation range spanning 3 orders of magnitude, between 2.3 GWto 1.9 TW (1 TW=1012 W). When model resolution is considered, this compares well with theoretical limits derived for the energetics of Earth's present-day deep ocean. Consequently, continents exert a fundamental control on tidal dissipation rates and we suggest that plate tectonics on a planet will induce a time-varying dissipation analogous to Earth's. This will alter rotational periods over millions of years and further complicate the role of tides for planetary evolution. ©2020. The Authors.
英文关键词	Extrasolar planets; Tides; Earth-like planets; Fundamental control; Model resolution; Orders of magnitude; Planetary evolutions; Statistical ensembles; Theoretical limits; Tidal dissipation; Earth (planet); dissipation; ocean tide; planetary evolution; plate tectonics; semidiurnal tide; simulation
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170212
作者单位	School of Ocean Sciences, Bangor University, Menai Bridge, United Kingdom; Department of Astronomy, University of Washington, Seattle, WA, United States; NASA Goddard Institute for Space Studies, New York, NY, United States; Goddard Space Flight Center Sellers Exoplanet Environments Collaboration, Greenbelt, MD, United States; Theoretical Astrophysics, Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
推荐引用方式 GB/T 7714	Blackledge B.W.,Green J.A.M.,Barnes R.,et al. Tides on Other Earths: Implications for Exoplanet and Palaeo-Tidal Simulations[J],2020,47(12).
APA	Blackledge B.W.,Green J.A.M.,Barnes R.,&Way M.J..(2020).Tides on Other Earths: Implications for Exoplanet and Palaeo-Tidal Simulations.Geophysical Research Letters,47(12).
MLA	Blackledge B.W.,et al."Tides on Other Earths: Implications for Exoplanet and Palaeo-Tidal Simulations".Geophysical Research Letters 47.12(2020).