中国青藏高原地球物理研究的第一批重大成果其发展导向与核心科学问题的认识和思考  

My understand and ponder for few important kernel problems in and great achievements for first time and developmental direction of Geophysical research in Tibetan Plateau of China

作　　者：滕吉文[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029

出　　处：《地球物理学进展》2008年第2期301-318,共18页Progress in Geophysics

基　　金：2007年中国科学院咨询项目;中国科学院知识创新工程重要方向(KZCX3-SW-148)项目联合资助

摘　　要：青藏高原的地球物理研究是深化认识高原本体和东亚壳、幔结构、隆升机制与大陆动力学响应的基础,故为中、外地球科学家们所瞩目.为此本文主要讨论以下4个方面问题:(1)问题的提出与背景;(2)率先进行青藏高原深部地球物理研究取得的第一批重要成果与进程;(3)青藏高原地球物理研究中的开创性研究成果和得到的启迪与国际影响;(4)当今青藏高原地球物理研究中的核心科学问题与当前青藏高原地球物理学要做些什么与思考.研究结果表明:(1)在青藏高原地球物理研究中只有在清晰思路指导下,取得高分辨率的数据才能反演,并刻画其壳、幔介质的精细结构;(2)青藏高原地壳巨厚、岩石圈相对较薄的层块结构与壳、幔结构分区特征,特别是存在地壳低速层和地幔低速层及其不均匀展布;(3)在多维力系作用下、深部物质重新分展、调整、运移和在多要素约束下的物理-数学模拟及陆-陆碰撞动力学响应;(4)当今在青藏高原地球物理研究的核心问题是地球内部物质和能量的交换、圈层耦合及其深层动力过程.中国地球科学家们应当清晰地认识到,青藏高原地球物理研究乃是中国地球科学家摘取"桂冠"的一个契机,故必须走自主创新之路,以建立起具有特色中国地球科学的理论和和运动学与与学模型.Geophysical studies of Tibet are the basis for deep understand the structure of the crust and mantle, uplift effect and continental dynamics of Tibetan Plateau Asia. So it is the fours by China and world geoscientists. For the reason, this paper will do discusses the following four points, Put forward of problems and background; major a- chievements for first time and course,enlightenment and guide direction for deep profound of the first time and international effect in Qinghui Xizang Plateau; Scientific problems and ponder at the core in Geophysical research of Tibetan Plateau at present; What＇s to do for geophysics in the China for Tibet today. The results show that; （1） acquisition only high resolutional seismic data can be in progress conversion and obtained fine structure of crust and Upper mantle under guilding of chear science train of thought;（2） structure of crust and Upper mantle in Tibet have obvious zoning characterstics （quadrantal distribution）, in specifically, most be study by quantify for the low velocity layer of crust and mantle with inhomogeneous distribuion; （3） multi-dimentional affect of force system, divergenu, regulate and motion of deep material, the physics and mathematics simulation under control by multiple factors, dynamical response of continental-continental collision; （4） exchange substance and energy.different sphere coupling and deep dynamical process within the Earth are the scientific problems at the core in Tibet are one of the treasure-house of world for pluok laurels by geoscientisty. So most be along the way of self innovation and establish the theory and kinematic and dynamic model with charcterstics of China. In ivew of above discuss proposed a few understanding and suggestions in lastly of this paper.

关 键 词：青藏高原 壳、幔结构 隆升机制 大陆动力学 核心科学问题 

分 类 号：P31[天文地球—固体地球物理学] P54[天文地球—地球物理学]