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首页> 外文期刊>Journal of oceanography >Super-deep CTD Measurements in the Izu-Ogasawara Trench and a Comparison of Geostrophic Shears with Direct Measurements
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Super-deep CTD Measurements in the Izu-Ogasawara Trench and a Comparison of Geostrophic Shears with Direct Measurements

机译：伊豆小gas原海沟的超深CTD测量以及直接测量的地转剪切的比较

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摘要

CTD (Conductivity-Temperature-Depth) data at five stations across the Izu-Ogasawara Trench at 34°N were examined. Geostrophic velocity was in accordance with the directly measured currents. Above the trench floor, potential temperature increased at a rate of 0.6 m℃/1000 db from 8000 db to 9417 db, and salinity increased from 8300 db to the bottom. Potential density was almost constant at 7100-8700 db, and it increased to the bottom. Above the eastern and western flanks, inversion of potential density was indicated in the bottom layers with an increase of potential temperature and a decrease of salinity, suggesting geothermal heating and outflow of ground water.
机译：检查了伊豆-小gas原海沟在34°N处五个站点的CTD（电导率-温度-深度）数据。地转速度与直接测得的电流一致。在沟槽底部以上，潜在温度以0.6 m℃/ 1000 db的速率从8000 db升高到9417 db，盐度从8300 db升高到底部。电位密度几乎恒定在7100-8700 db，然后增加到最低。在东部和西部侧面上方，随着势能温度的升高和盐度的降低，指示了底层的势密度反演，表明地热加热和地下水流出。

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