CAJ | 학술논문

本文基于喜马拉雅西构造结地带区的重力场、电磁波场和地震波场特征,从不同学科的角度对喜马拉雅西构造结区深部地球物理场做了分析.不同学科的研究成果表明,西构造结区不仅存在着令人瞩目的中、深源地震,而且其重力场、电磁波场和壳、幔地震速度结构存在着高度的非均匀性.这不仅表明其在不同演化阶段和不同物质组成先后参与了岛弧与大陆、大陆与大陆碰撞的造山过程及其导致的横向结构特征的显著差异上,同时也反映出这种复杂过程在对深层演化进程所带来的影响,故导致了西构造结区的形成和长期演化的复杂过程.显然西构造区的介质属性、构造格局和深层过程均制约着、并强烈影响着高原西北缘及其西部的深、浅构造组构和运动学与动力学响应.故在青藏高原的动力学模型构建中占有着重要地住.由于西构造结区深部结构和动力学研究工作尚少,而又因自然条件和政治环境的制约,故该区深部物质与能量的交换和其物理-力学过程等核心问题尚有待于加强研究和探索.
본문기우희마랍아서구조결지대구적중력장、전자파장화지진파장특정,종불동학과적각도대희마랍아서구조결구심부지구물리장주료분석.불동학과적연구성과표명,서구조결구불부존재착령인촉목적중、심원지진,이차기중력장、전자파장화각、만지진속도결구존재착고도적비균균성.저불부표명기재불동연화계단화불동물질조성선후삼여료도호여대륙、대륙여대륙팽당적조산과정급기도치적횡향결구특정적현저차이상,동시야반영출저충복잡과정재대심층연화진정소대래적영향,고도치료서구조결구적형성화장기연화적복잡과정.현연서구조구적개질속성、구조격국화심층과정균제약착、병강렬영향착고원서북연급기서부적심、천구조조구화운동학여동역학향응.고재청장고원적동역학모형구건중점유착중요지주.유우서구조결구심부결구화동역학연구공작상소,이우인자연조건화정치배경적제약,고해구심부물질여능량적교환화기물리-역학과정등핵심문제상유대우가강연구화탐색.
Based on characteristics of the gravity field,electromagnetic field and seismic wave field in the Western Himalayan Syntaxis area,deep geophysical fields of this region are analyzed from various subject views.Studies of different subjects show that not only intermediate and deep focus earthquakes oceur in this region,high heterogeneity also exists in its gravity field,electromagnetic wave field and crust-mantle velocity structure.This demonstrates that the apparent horizontal structure variations are the resuhs of multiple orogenic events through the collision between the island-arc and continent,or between the continents,as well aa the striking evolution process in deep layers affected by the complicated orogenic movements.Such variations in properties further indicate the complexity of the formation processes and evolution in Western Himalayan Syntaxis zone over long geological periods.Obviously,the medium properties,tectonic framework and deep process of the Western Himalayan Syntaxis strongly restrict and influence the tectonic structure and kinematic-dynamics responses in the north western margin and the western region of the Tibetan Plateau,and so that play an important role in the Tibetan dynamic model.Since there are few studies on deep structure and dynamics progress of the Western Himalayan Syntaxis region,and also restricts from natural and political conditions,further studies and exploitations are needed on such key problems as the exchange of matter-energy at depth and its physicabmechanical process.