| Song Bo,Wang Huizan,Chen Changlin,Zhang Ren,Bao Senliang. 2019. Observed subsurface eddies near the Vietnam coast of the South China Sea. Acta Oceanologica Sinica, 38(4):39－46 |
| Observed subsurface eddies near the Vietnam coast of the South China Sea |
| 基于观测的南海越南沿岸次表层涡旋 |
| Received:May 14, 2018 |
| DOI：10.1007/s13131-019-1412-8 |
| Key words:coast of Vietnam subsurface eddy Argo GTSPP DIVA |
| 中文关键词: 越南沿岸 次表层涡旋 Argo GTSPP DIVA |
| 基金项目:The National Natural Science Foundation of China under contract Nos 91428206, 41206002, 41706021 and 41775053; the China Postdoctoral Science Foundation under contract No. 2014M551711; the Strategic Priority Research Program of the Chinese Academy of Sciences under contract No. XDA11010103. |
| Author Name | Affiliation | E-mail | | Song Bo | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | | | Wang Huizan | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China | wanghuizan@126.com | | Chen Changlin | Department of Atmospheric and Oceanic Sciences/Institute of Atmospheric Sciences, Fudan University, Shanghai 200433, China | | | Zhang Ren | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | | | Bao Senliang | College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China | |
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| Abstract: |
| In this study, subsurface eddies near the Vietnam coast of the South China Sea were observed with in situ observations, including Argo, CTD, XBT and some processed and quality controlled data. Based on temperature profiles from four Argo floats near the coast of Vietnam, a subsurface warm eddy was identified in spring and summer. The multi-year Argo and Global Temperature and Salinity Profile Programme (GTSPP) data were merged on a seasonal basis based on the data interpolating variational analysis (DIVA) method to reconstruct the three-dimensional temperature structure. There is a warm eddy in the central subsurface at 12.5°N, 111°E below 300 m depth in spring, which does not exist in autumn and is weak in winter and summer. From CSIRO Atlas of Regional Seas (CARS) and Generalized Digital Environment Model (GDEM) reanalysis data, this subsurface warm eddy is also verified in spring. |
| 中文摘要: |
| 论文通过Argo、CTD等现场观测数据，发现在越南沿岸附近海洋次表层存在涡旋。找到四个经过越南沿岸附近的Argo浮标（No.2901145， 2902697， 5904191， 5904747），使用浮标的温度剖面数据可以发现在春季和夏季越南沿岸海洋次表层存在暖涡现象，将多年Argo和GTSPP的散点观测数据进行融合，重建三维温度场，结果中可以看出次表层暖涡出现在300米以下，中心位置在111°E， 12.5°N，时间上春季最强，夏季和冬季相对较弱，秋季不存在。在南海越南沿岸附近，表层的涡旋的产生可能受季风影响，次表层涡旋的产生则可能受到越南沿岸附近半封闭性地形的影响。 |
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