| HU Zifeng,TAN Yehui,SONG Xingyu,ZHOU Linbin,LIAN Xiping,HUANG Liangmin,HE Yinghui. 2014. Influence of mesoscale eddies on primary production in the South China Sea during spring inter-monsoon period. Acta Oceanologica Sinica, 33(3):118－128 |
| Influence of mesoscale eddies on primary production in the South China Sea during spring inter-monsoon period |
| 吕宋海峡西部深海盆内孤立波潜标观测研究 |
| Received:January 18, 2013 Revised:May 07, 2013 |
| DOI：10.1007/s13131-014-0431-8 |
| Key words:mesoscale eddies chlorophyll a primary production vertically generalized production model remote sensing South China Sea |
| 中文关键词: 内孤立波 南海 观测 非线性内波 |
| 基金项目:The CAS Strategic Pilot Science and Technology of China under contract Nos XDA11020205 and XDA05030403;the National Project of Basic Sciences and Technology of China under contract Nos 2012FY112400 and 2013FY111200;the National Natural Science Foundation of China under contract Nos 41276162, 41130855, 41276161 and 40906057;the Natural Science Foundation of Guangdong Province of China under contract No. S2011040000151. |
| Author Name | Affiliation | E-mail | | HU Zifeng | Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
University of Chinese Academy of Sciences, Beijing 100049, China | | | TAN Yehui | Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China | | | SONG Xingyu | Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Marine Biology Research Station at Daya Bay, Chinese Academy of Science, Shenzhen 518121, China | songxy@scsio.ac.cn | | ZHOU Linbin | Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China | | | LIAN Xiping | Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China | | | HUANG Liangmin | Key Laboratory of Marine Bio-resources Sustainable Utilization (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China | | | HE Yinghui | State Key Laboratory of Tropical Oceanology (LTO), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China | |
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| Abstract: |
| Mesoscale eddies have been suggested to have an impact on biological carbon fixation in the South China Sea (SCS). However, their overall contribution to primary production during the spring inter-monsoon period is still unknown. Based on large-scale biological and environmental in situ observations and synchronous remote sensing data, the distribution patterns of phytoplankton biomass and the primary production, and the role of mesoscale eddies in regulating primary production in different eddy-controlled waters were investigated. The results suggested that the surface chlorophyll a concentrations and water column integrated primary production (IPP) are significantly higher in cyclonic eddies and lower in the anticyclonic eddies as compared to that in non-eddy waters. Although eddies could affect various environmental factors, such as nutrients, temperature and light availability, nutrient supply is suggested to be the most important one through which mesoscale eddies regulated the distribution patterns of phytoplankton biomass and primary production. The estimated IPP in cyclonic and anticyclonic eddies are about 29.5% higher and 16.6% lower than the total average in the whole study area, respectively, indicating that the promotion effect of mesoscale cold eddies on the primary production was much stronger than the inhibition effect of the warm eddies per unit area. Overall, mesoscale eddies are crucial physical processes that affect the biological carbon fixation and the distribution pattern of primary production in the SCS open sea, especially during the spring inter-monsoon period. |
| 中文摘要: |
| 2010年3月至8月，在吕宋海峡西部深水区布放的一套潜标捕共捉到了137个内孤立波，其中典型内孤立波的振幅能够达到140米，其诱发的西向流速超过1.6米/秒。在观测期间，7月份的内孤立波最强，其可能跟夏季较强的海水层结有关。大部分内孤立波在农历初一、十五附近或之后发生，表明其是由天文潮激发的。大约一半的内孤立波在当地时间19点左右出现，这是由于A型内孤立波每天到达潜标的时间基本相同。内孤立波的传播方向和吕宋海峡天文潮表明，巴坦岛南部海域是观测到的A型内孤立波的生成源地；伊特巴亚岛南部和巴坦岛南部海域是观测到的B型内孤立波的生成源地。由于半日内潮在吕宋海峡东、西海山间的共振作用，伊特巴亚岛南部和巴坦岛南部海域是观测到的强内孤立波的主要生成源地。 |
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