基于CTD资料的南海南部上层环流结构分析

发布时间：2018-04-26 05:25

本文选题：南海中南部 + 动力高度　；参考：《海洋学报》2016年01期

【摘要】：利用2009-2012年南海南部海域4个调查航次的CTD资料,计算了南海南部海域的动力高度,分析了季风转换期南海南部上层的环流结构。结果表明:2009年夏初(6月),调查区上层环流结构已经初具夏季形态,越南离岸流已明显出现;2010年秋末冬初(11月),上层环流结构基本转换为冬季环流形态,越南离岸流消失,纳土纳流出现;2011年秋季中期(10月),南海南部的环流处于夏季向冬季转换形态,越南离岸流减弱,但调查区域夏季的反气旋式环流依然存在;2012年9月夏末秋初,南海南部的环流仍然与夏季的形态相近,越南离岸流依然存在,其两侧的环流结构也与夏季相同。本文的分析结果还较为清晰地给出了南海南部环流由夏季向冬季转变的动态过程。
[Abstract]:Based on the CTD data of four surveys in the southern South China Sea from 2009 to 2012, the dynamic height of the southern South China Sea is calculated, and the circulation structure of the upper South China Sea during the monsoon transition period is analyzed. The results show that in the early summer of 2009 (June), the upper circulation structure of the survey area has taken on the summer pattern, and the offshore flow in Vietnam has appeared obviously, and the upper circulation structure has basically changed into the winter circulation pattern in late autumn and early winter of 2010, and the offshore flow in Vietnam has disappeared. The Natuna current appeared in mid-autumn 2011 (October, the south of the South China Sea was in the summer to winter transition pattern, Vietnam offshore flow weakened, but the survey area summer anticyclonic circulation still exists; late summer in September 2012 early autumn, The circulation pattern in the south of the South China Sea is still similar to that in summer, and the offshore current in Vietnam still exists, and the circulation structure on both sides of the South China Sea is the same as that in summer. The dynamic process of the southern South China Sea circulation from summer to winter is also presented.
【作者单位】：国家海洋局第一海洋研究所海洋环境与数值模拟实验室;
【基金】：国家自然科学基金委员会——山东省人民政府联合资助海洋科学研究中心项目(U1406404)
【分类号】：P731.27

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