Constraints on the structure and composition of Mars from thermal evolution models

被引：5
|
作者：
Weizman, A
Prialnik, D
Podolak, M
机构：
[1] Department of Geophysics and Planetary Sciences, Raymond and Beverly Sadder Faculty of Exact Sciences, Tel Aviv University, Tel Aviv
来源：
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS | 1996年 / 101卷 / E1期
关键词：
D O I：
10.1029/95JE02775
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A numerical model of the thermal evolution of Mars was developed, solving simultaneously the equations for energy conservation and hydrostatic equilibrium throughout the planet, and using an equation of state that includes the computation of the thermal pressure according to the Debye theory. Based on the known values of the size and mass of Mars, and choosing the value of 0.365 for the inertia factor, we determine the initial mass fractions of different materials constituting the core and mantle of Mars. The abundance ratios of the components are described by three parameters. Two of these parameters are fixed by the radius and inertia factor of Mars, while the third remains free. Several models that match the present radius and inertia factor were found, distinguished by their initial composition. The thermal evolution and present internal state of these models were evaluated, in order to establish constraints on the composition and internal structure of Mars.
引用
收藏
页码：2235 / 2245
页数：11
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