| 摘要: |
| 根据1991年WOCE首航中从热带西太平洋采集的水样的δ18O数据，论述了该海区的氧同位素组成及其分布特点。结果表明，氧同位素的平面分布在一定程度上反映了热带西太平洋表层环流的基本特征，提供了北赤道流和黑潮源地的同位素示踪物证据。此外，还对δ18O值的垂直分布、断面分布，及δ18O值与盐度、温度、溶解氧相互关系等进行初步探讨。 |
| 关键词: 热带西太平洋 氧同位素 大洋环流 |
| DOI： |
| 分类号: |
| 基金项目:国家海洋局资助课题 |
附件 |
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| A PRELIMINARY INVESTIGATION ON THE COMPOSING CHARACTERISTICS OF OXYGEN ISOTOPE OF THE SEAWATER FROM THE TROPICAL WEST PACIFIC |
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Hong Ashi1, Wang Mingliang1, Gao Renxiang2, Hong Ying1
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1.Third Institute of Oceanography, SOA, Xiamen 361005;2.Central Laboratory of Petroleum Geology, MGMR, Wuxi 214151
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| Abstract: |
| Based on the δ18O data of the seawater samples collected from the tropical west Pacific during the first cruise of WOCE program in 1991, this paper discusses the oxygen isotope composition of this area and its distribution features. Results show that, the horizontal distribution of the oxygen isotope to some extent reflects the basic charactericts of the surface circulation here and provides the isotopic tracer evidence for the origin region of the Kuroshio and the North Equatorial Current. Some preliminary discussions are carried out on the vertical and sectional distribution of δ18O value, the correlations among the δ18O value and salinity, temperature and the dissolved oxygen, the action of the bottom current upwelling and the mixing of water masses in the studied area. |
| Key words: Tropical west Pacific, Oxygen isotope, Ocean circulation |
