2014年与2015年夏季琼东上升流的年际变化及其成因分析

李凯; 高璐; 董旭; 潘爱军; 王维波; 万小芳

doi:10.3969/j.issn.0253-4193.2019.01.001

2014年与2015年夏季琼东上升流的年际变化及其成因分析

doi: 10.3969/j.issn.0253-4193.2019.01.001

自然资源部第三海洋研究所, 福建厦门 361005

基金项目: 海洋三所基本科研业务费项目（海三科2016024，海三科2016025）；国家重点研发计划（2017YFC1405100）。

计量
- 文章访问数: 604
- HTML全文浏览量: 9
- PDF下载量: 290
- 被引次数: 0
出版历程
- 收稿日期: 2017-12-05
- 修回日期: 2018-03-14

The interannual variation and preliminary analysis of upwelling in eastern Hainan Island in summer of 2014 and 2015

Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China

摘要

摘要: 本文通过2014年与2015年7月琼东海域的现场调查资料，结合卫星遥感数据，对ENSO影响下琼东上升流的变化进行研究分析，结果表明：2015年为强厄尔尼诺年，2015年7月低温高盐水总体上离表层较深，大约为20~30 m（24.5℃等温线和34等盐线），但在近岸处（离岸20 km以内）却相对较浅，24.5℃等温线和34等盐线在整个断面抬升15~25 m，上升流的爬升现象更为明显；受西南季风影响，表层海水离岸运动，低温高盐水沿地形爬升进行补充，是典型的风生上升流。2014年为正常年份，2014年7月，整个断面低温高盐水更接近表层（近岸例外），大约为10~20 m，同等深度低温高盐现象比2015年明显，但上升流爬升现象不明显，24.5℃等温线和34等盐线在整个断面抬升不到10 m；盛行风为东南风、向岸风，对上升流的形成起抑制作用，低温高盐水使整个断面的抬升，不符合风生上升流的特征规律，表明该年琼东上升流的形成可能与外海环流变化导致的温跃层抬升有关。
- ENSO /
- 琼东上升流 /
- 低温高盐
Abstract: On the basis of spot investigation data and satellite remote sensing data in eastern Hainan Island of July 2014 and 2015, we investigated the variation of upwelling in eastern Hainan Island under the influence of ENSO. Results show that 2015 is a strong El Niño year, and the low temperature, high salinity water is deeper from the surface than 2014, but more shallow in the offshore, and the climbing phenomenon of the upwelling is more obvious. The 27.5℃ isothermal of temperature and the 34 isograms of salinity can climb up to 15-25 m in the whole section. Influenced by southwesterly wind, the low temperature-high salinity water climb up along the terrain, which is the typically wind-driven upwelling. 2014 is a normal year, the low temperature-high salinity water is more shallow from the surface than 2015 (except the offshore), the low temperature-high salinity phenomenon is more obvious than 2015 in the same depth, but the climb phenomenon of the upwelling is not obvious. The 27.5℃ isothermal of temperature and the 34 isograms of salinity climb in less than 10 m. Prevailing wind is southeasterly wind, which suppresses the form of upwelling. The low temperature-high salinity water lifting is formed on the whole terrain, which is not suit to the characteristic of the typically wind-driven upwelling. This shows that the form of upwelling in eastern Hainan Island in 2014 may be associated with the thermocline lift caused by circulation changes off the coast.
- ENSO /
- the upwelling in eastern Hainan Island /
- low temperature-high salinity

HTML全文

参考文献(16)

邓松, 钟欢良, 王名文, 等. 琼海沿岸上升流及其与渔场的关系[J]. 台湾海峡, 1995, 14(1):51-56. Deng Song, Zhong Huanliang, Wang Mingwen, et al. On relation between upwelling off Qionghai and fishery[J]. Journal of Oceanography in Taiwan Strait, 1995, 14(1):51-56.

于文泉. 南海北部上升流的初步探讨[J]. 海洋科学, 1987, 11(6):7-10. Yu Wenquan. A preliminary approach of the upwelling for the northern South China Sea[J]. Marine Sciences, 1987, 11(6):7-10.

邓松. 七洲列岛以南上升流分析[R]. 广州:国家海洋局南海分局, 1987. Deng Song. Analysis of the upwelling in the south of Qizhou Islands[R]. Guangzhou:South China Sea Branch, State Oceanic Administration, 1987.

韩舞鹰, 王明彪, 马克美. 我国夏季最低表层水温海区-琼东沿岸上升流区的研究[J]. 海洋与湖沼, 1990, 21(3):167-275. Han Wuying, Wang Mingbiao, Ma Kemei. On the lowest surface water temperature area of China Sea in summer-the upwelling along the coast of Hainan Island[J]. Oceanologia et Limnologia Sinica, 1990, 21(3):167-275.

Li Li. Summer upwelling system over the northern continental shelf of the South China Sea-A physical description[M]//Proceedings of the Symposium on the Physical and Chemical Oceanography of the China Seas. Beijing:China Ocean Press, 1993:58-68.

许金电, 蔡尚湛, 宣莉莉, 等. 2006年夏季琼东、粤西沿岸上升流研究[J]. 海洋学报, 2013, 35(4):11-18. Xu Jindian, Cai Shangzhan, Xuan Lili, et al. Observational study on summertime upwelling in coastal seas between eastern Guangdong and southern Fujian[J]. Haiyang Xuebao, 2013, 35(4):11-18.

郭飞, 侍茂崇, 夏综万. 琼东沿岸上升流二维数值模型的诊断计算[J]. 海洋学报, 1998, 20(6):109-116. Guo Fei, Shi Maochong, Xia Zongwan. Two-demension diagnose model to calculate upwelling on offshore of the east coast of Hainan Island[J]. Haiyang Xuebao, 1998, 20(6):109-116.

经志友, 齐义泉, 华祖林. 南海北部陆架区夏季上升流数值研究[J]. 热带海洋学报, 2008, 27(3):1-8. Jing Zhiyou, Qi Yiquan, Hua Zulin. Numerical study on summer upwelling over northern continental shelf of South China Sea[J]. Journal of Tropical Oceanography, 2008, 27(3):1-8.

Wang Dongxiao, Liu Qinyan, Huang Ruixin, et al. Interannual variability of the South China Sea throughflow interred from wind data and an ocean data assimilation product[J]. Geophysical Research Letters, 2006, 33:L14605, doi: 10.1029/2006GL026316.

Xie Shangping, Chang C H, Xie Qiang, et al. Intraseasonal variability in the summer South China Sea:wind jet, cold filament, and recirculations[J]. Journal of Geophysical Research, 2007, 112:C10008, doi: 10.1029/2007JC004238.

Chang C W, Hsu H H, Wu C R, et al. Interanunal mode of sea level in the South China Sea and the roles of El Niño and El Niño Modoki[J]. Geophysical Research Letters, 2008, 35:L03601, doi: 10.1029/2007GL032562.

Fan Lei, Shin S I, Liu Qinyu, et al. Relative importance of tropical SST anomalies in forcing East Asian summer monsoon circulation[J]. Geophysical Research Letters, 2013, 40(10):2471-2477.

刘弈, 彭子成, 韦刚健, 等. 南海北部夏季沿岸上升流近百年的强度变化[J]. 地球化学, 2009, 38(4):317-322. Liu Yi, Peng Zicheng, Wei Gangjian, et al. Variation of summer coastal upwelling at northern South China Sea during the last 100 years[J]. Geochimica, 2009, 38(4):317-322.

柴扉, 薛惠洁, 侍茂崇. 南海升降流区域分布及形成机制分析[G]//中国海洋学文集(13). 北京:海洋出版社, 2001:129-137. Chai Fei, Xue Huijie, Shi Maochong, et al. The distribution and form mechanism of upwelling and downwelling in the South China Sea[G]//Oceanography in China(13). Beijing:China Ocean Press, 2001:129-137.

Jing Zhiyou, Qi Yiquan, Du Yan. Upwelling in the continental shelf of northern South China Sea associated with 1997-1998 El Niño[J]. Journal of Geophysical Research, 2011, 116:C02033, doi: 10.1029/2010JC006598.

Su Jian, Xu Mingquan, Pohlmann T, et al. A western boundary upwelling system response to recent climate variation (1960-2006)[J]. Continental Shelf Research, 2013, 57:3-9.

施引文献

资源附件(0)

访问统计