月球晚期重轰击和Nice模式  

Lunar Late Heavy Bombardment and Nice model

作　　者：陈丰[1] 王世杰[1,2] 

机构地区：[1]中国科学院地球化学研究所矿床地球化学国家重点实验室,贵阳550002 [2]中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳550002

出　　处：《矿物岩石地球化学通报》2011年第2期210-214,共5页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金资助项目(40803019;40873055;40673053);中国科学院知识创新导向项目(KZCX2-YW-110);国家863项目(2008AA12A213)

摘　　要：晚期重轰击（一般又称为月球灾难,简称LHB）指的是距今约3.8~4.1 Ga时段月球受到大量陨石的轰击,于月面上形成的大量撞击坑,并推论地球、水星、金星和火星也经历了这样一次重轰击。Nice模式是关于太阳系动力学演化的一种设想：在初始原行星气体星盘消散之后很久,大行星从最初紧凑的组构迁移到目前的位置。这个行星迁移理论用来解释包括内太阳系的晚期重轰击,以及Oort云、Kuiper带、海王星和木星Trojans行星等形成的历史事件。The Late Heavy Bombardment（LHB）,which is commonly referred to as the lunar cataclysm,is a period of approximate from 3.8 to 4.1 Ga when a large number of impact craters are believed to have been formed on the Moon,and is inferred that have happened on the Earth,the Mercury,the Venus,and the Mars as well.The Nice model is a dynamical evolution scenario of the Solar System.It was named after the location of the Observatory of the Cote of Azur,CNRS in Nice,France,where it was initially developed.Nice model proposes that giant planets migrated from initial compact configurations into their present positions,long after the dissipation of the initial protoplanetary gas disk.This planetary migration is used to explain historical events including the Late Heavy Bombardment of the inner Solar System,and the formation of the Oort cloud,the Kuiper belt,the Neptune and the Jupiter Trojans etc.

关 键 词：晚期重轰击 Nice模式 大行星 迁移 

分 类 号：P184[天文地球—天文学]