摘要: |
本文根据2007年南黄海的CTD调查资料,分析了南黄海中层冷水的10个示性特征及其分布特征,指出2007年春季中层冷水主要出现于35°N以北的海域,核心区主要位于50 m等深线附近,中心深度位于25~40 m,宽度约为100 km,厚度为10~25 m,强度为0.04~0.14℃/m。对比分析冬季与夏季温度、盐度及实测海流资料显示南黄海春季出现的中层冷水主要是黄海暖流、沿岸冷水以及春季表层升温等过程的综合作用结果。 |
关键词: 南黄海 中层冷水 示性特征 成因 |
DOI:10.11759/hykx20200521002 |
分类号:P72 |
基金项目:国家自然科学基金项目(41176018),国家自然科学基金项目(41206014),中国科学院战略性先导科技专项(A类)“热带西太平洋海洋系统物质能量交换及其影响(XDA11020301) |
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Character and formation of the middle layer cold water of the south Yellow Sea in spring |
DIAO Xin-yuan1, WANG Jian-feng2, WEI Chuan-jie2, SI Guang-cheng2, YU Fei2
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1.Institute of Oceanology, Chinese Academy of Sciences;2.The Institute of Oceanology, Chinese Academy of Sciences
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Abstract: |
Based on the CTD observations in 2007, ten characteristics of the middle layer cold water (MLCW)and its spatial pattern was presentedIn the spring 2007, the MLCW was captured in the north of 35°N latitude line with about 60 nautical miles width. The core of MLCW locates at the 50m isobaths and 25-40 m depth, with about 10-25m thick and 0.04-0.14℃/m vertical gradient. Comparing with the temperature and salinity distributions from spring to winter, together with the analysis of mooring current observations, we found that the MLCW is formed due to combined effects of the Yellow Sea Warm Current, coastal cold water and the surface warming in the spring. |
Key words: the south Yellow Sea middle layer cold water indicator index cause of formation |