Coupled thermal-orbital evolution of the early Moon

被引：77

作者：

Meyer, Jennifer ^{[1
]}

Elkins-Tanton, Linda ^{[1
]}

Wisdom, Jack ^{[1
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

来源：

ICARUS | 2010年 / 208卷 / 01期

基金：

美国国家科学基金会;

关键词：

Moon; Earth; Satellites; Dynamics; TIDAL DISSIPATION; LUNAR; EARTH; CRYSTALLIZATION; ECCENTRICITY; MODEL; BODY;

D O I：

10.1016/j.icarus.2010.01.029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Coupled thermal-orbital histories of early lunar evolution are considered in a simple model. We consider a plagioclase lid, overlying a magma ocean, overlying a solid mantle. Tidal dissipation occurs in the plagioclase lid and heat transport is by conduction and melt migration. We find that large orbital eccentricities can be obtained in this model. We discuss possible consequences of this phase of large eccentricities for the shape of the Moon and geochronology of lunar samples. We find that the orbit can pass through the shape solution of Garrick-Bethell et al. (Garrick-Bethell, I., Wisdom, J., Zuber, M. [2006]. Science 313, 652), but we argue that the shape cannot be maintained against elastic deformation as the orbit continues to evolve. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：1 / 10

页数：10

共 45 条

[1] Thermal and chemical evolution of the terrestrial magma ocean [J].