青藏高原地球科学研究中的核心问题与理念的厘定  

Collation and stipulation of the core science problems and theoretical concept in the geoscience study on the Tibetan plateau

作　　者：滕吉文[1] 司芗[1,2] 王谦身[1] 张永谦[3] 杨辉[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国科学院大学,北京100049 [3]中国地质科学院矿产资源研究所,北京100037

出　　处：《地球物理学报》2015年第1期103-124,共22页Chinese Journal of Geophysics

基　　金：国家自然科学基金项目(90914012)资助

摘　　要：在青藏高原的地球科学研究中,国外科技界曾提出过六大论点——喜马拉雅山脉是地壳均衡的典范;青藏高原地壳乃是两个地壳的垂向重叠;雅鲁藏布江是印度洋板块和欧亚板块的缝合带;青藏高原西部的南北走向断裂带全为裂谷带;青藏高原腹地深部物质的向东逃逸;青藏高原下地壳物质通道流以及汶川MS8.0大地震的发生.这一系列论点确为国人广为引用与跟随,并发表了若干篇论著.然而在不断理解和深化研究的基点上提出了质疑,并基于新的认识提出了新的论点与论据,且在科学理念上给予了重新厘定.因为科学是为宇宙提供真正的写真.In the earth science study of the Tibetan plateau,there were six main arguments in the foreign scientific circles.They are：the Himalayas is a paradigm of isostasy,the Tibetan plateau crust consists of two vertical superimposed crust;the Yarlung Zangbo river is the suture line between the Indian Ocean plate and Eurasian plate,all the north-south faults in the west of the Tibetan plateau are rift zones,deep material of the Tibetan plateau hinterland escapes to the east,there exists channel flow of the lower crust material in the Tibetan plateau which is related with the occurrence of the Wenchuan MS8.0earthquake.These series of arguments are widely quoted and followed by Chinese scientists,and several works have been published.However,with the deeper research and further understanding,these arguments should be doubted and re-determined on a scientific concept.New arguments must be put forward based on new cognitions,because science should provide a real picture for the universe.In light of observations,experiments and numerical simulation,six main geoscience arguments of the Tibetan plateau are comprehensively analyzed and re-determined on a scientific concept.The methods used in the study are varied,such as gravity observations and inversion,high-precision artificial source deep seismic sounding,natural source seismic long-period surface wave dispersion inversion,aeromagnetic anomaly measurement,physical experiment modeling,and mathematical simulation.New observations,new arguments and new cognitions allow us to make new collation and stipulation for the six main geosciences arguments of Tibetan plateau and create new theory and models.For example,the Himalayas is not a paradigm of isostasy;the Qinghai—Tibetan plateau crust is extremely thick butdoes not consists of two vertical superimposed crust;the collision of the Indian Ocean and Eurasian plate causes the separation,regulation,movement and coupling responses of deep and shallow material interaction,which form a broad transition zone of collision and compr

关 键 词：核心科学问题 科学质疑 科学真谛 科学理念 重新厘定 

分 类 号：P541[天文地球—构造地质学]