洋中脊构造及地震调查现状
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摘要
介绍了洋中脊的全球分布和构造特征,对全球主要的、不同扩张速率的洋中脊进行了分类和列表描述;对洋中脊的构造特征,如地形特征、地壳厚度与扩张速率的关系及扩张轴下的岩浆房的特征、洋中脊与地幔柱的相互作用进行了阐述。回顾了海底地震仪在洋中脊构造调查中的应用及取得的主要成果。简要介绍了我国将用海底地震仪开展洋中脊构造调查的技术路线。
The global distributions and structure characteristics of mid-ocean ridges were introduced in this paper,including the classification of main mid-ocean ridges based on spreading rates,basic characteristics of mid-ocean ridges such as geomorphology features,the relationship between crust thickness and spreading rate,the magma chamber beneath the mid-ocean ridge as well as the interaction between the plume and the mid-ocean ridge.The applications and some important achievements of the ocean bottom seismometer(OBS) in surveys on the mid-ocean ridges were reviewed.Moreover,the principal technical scheme in our investigation on South West Indian Ridge,which is going to be fulfilled using OBS in the next year,is also briefly introduced.
引文
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