类地行星金属核的化学组成  

Chemical compositions of metallic cores in terrestrial planets

作　　者：李泽明 李元[1,3] LI Zeming;LI Yuan(State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China;University of Chinese Academy of Sciences,Beijing 100049,China;CAS Center for Excellence in Deep Earth Science,Guangzhou 510640,Guangdong,China)

机构地区：[1]中国科学院广州地球化学研究所,同位素地球化学国家重点实验室,广东广州510640 [2]中国科学院大学,北京100049 [3]中国科学院深地科学卓越创新中心,广东广州510640

出　　处：《地球化学》2024年第4期611-622,共12页Geochimica

摘　　要：类地行星的形成和演化过程一直是行星科学的研究热点和重点,类地行星研究不仅能促进人类对行星起源、行星演化、行星磁场和行星动力学等行星科学的认知,还涉及到我们对外太空的探索以及对外星生命的追寻。近几十年来,随着科技的发展,人类对于太阳系行星的研究取得了大量成果,本文总结了目前最新的类地行星物理参数,例如质量、半径、惯性矩和金属核的惯性矩等,这些参数为行星物理模型的建立提供了理论基础;本文还对最新的类地行星、类地行星金属核、球粒陨石及其金属相的化学组成及元素比值进行了总结和对比,并对类地行星金属核和陨石中金属相的特征进行了简要的探讨。本文参照太阳系类地行星和球粒陨石最新的物理和化学数据,通过类比研究,提出类地行星科学研究领域一些重要的科学问题。The formation and evolution processes of terrestrial planets have always been the focus of planetary science.Research on terrestrial planets can not only promote understanding of the planetary science,such as planetary origin,evolution of planets,the planetary magnetic field,and planetary dynamics,but it is also crucial for exploring outer space and the search for alien life.With the progression of science and technology in recent decades,lots of new research achievements have been obtained in the study of planets in the solar system.This study complied the latest observations of terrestrial planet physical parameters(e.g.,mass,radius,moment of inertia,the moment of inertia of terrestrial planet cores),which provide new clues for the physical mode of terrestrial planets.The chemical compositions and elemental ratios among terrestrial planets and their cores,chondrites,and metal phases in chondrites are summarized and compared in this study.We briefly discussed the characteristics of the chondrite metal phases and the cores of terrestrial planets.Based on the latest physical and chemical data of terrestrial planets and meteorites in the solar system,this work aims to propose significant scientific questions in the field of terrestrial planetary science through a comparative study.

关 键 词：类地行星 金属核 化学成分 球粒陨石 

分 类 号：P148[天文地球—天体物理]