2013年夏季琼东海域上升流观测研究

doi:10.11978/2015062

热带海洋学报 ›› 2016, Vol. 35 ›› Issue (2): 40-49.doi: 10.11978/2015062CSTR: 32234.14.2015062

2013年夏季琼东海域上升流观测研究

汪彧^{1, 2}, 经志友¹, 齐义泉¹

1. 热带海洋环境国家重点实验室(中国科学院南海海洋研究所), 广东广州 510301; 2. 中国科学院大学, 北京 100049;

收稿日期:2015-04-30 修回日期:2015-06-17 出版日期:2016-02-29 发布日期:2016-02-29
通讯作者: 经志友。E-mail: jingzhiyou@scsio.ac.cn
作者简介:汪彧(1991—), 男, 福建省厦门市人, 硕士研究生, 主要从事海洋动力过程研究。E-mail: wangyu@scsio.ac.cn
基金资助:
中国科学院战略性先导科技专项(XDA11010203); 国家自然科学基金项目(41276022、41230962、41206010); 广东省近海海洋变化与灾害预警重点实验室开放课题(GLOD1401)

Coastal upwelling off eastern Hainan Island observed in the summer of 2013

WANG Yu^{1, 2}, JING Zhiyou¹, QI Yiquan¹

1. State Key Laboratory of Tropical Oceanography (South China Sea Institute of Oceanology, Chinese Academy of Sciences),;Guangzhou 510301, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-04-30 Revised:2015-06-17 Online:2016-02-29 Published:2016-02-29
Contact: JING Zhiyou. E-mail: jingzhiyou@scsio.ac.cn
Supported by:
Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11010203); National Natural Science Foundation of China (41276022、41230962、41206010); Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction (GLOD1401)

摘要/Abstract

摘要： 利用2013年夏季国家自然科学基金委员会南海西部航次获得的观测资料, 并结合卫星遥感海面温度和风场资料, 对琼东海域夏季上升流的空间结构及其演变过程进行了分析。研究结果表明, 在2013年夏季航次观测期间, 琼东海域存在显著的上升流现象, 但表层上升流信号较弱, 强上升流主要发生在30~50m的下层海域, 上升流中心海域与外围海水在下层的温度差超过7℃, 盐度差可达到0.7‰以上。进一步分析航次期间的一次热带气旋过程对琼东上升流的影响, 结果表明热带气旋破坏了上升流的上层结构, 且琼东上升流对风场变异的响应过程存在2~4d的滞后。

关键词: 琼东, 上升流, 时空结构, 热带气旋

Abstract: Based on in-situ observations supported by the National Natural Science Foundation of China during the summer of 2013 as well as satellite data, the summer coastal upwelling off eastern Hainan Island is examined in details, including its spatial structure, evolution process and the response to a tropical cyclone during the cruise. The results suggest that the upwelling anchored off eastern Hainan Island, with relatively weak signals at the sea surface. The observed strong upwelling mainly took place between the depths of 30-50 m below the surface. The temperature difference between the cooling center and the offshore non-upwelling water was more than 7°C, and the salinity difference was more than 0.7 psu. Moreover, the analysis of a tropical cyclone onset indicates that the structure of coastal upwelling in the upper ocean was completely destroyed, due to the shutdown of upwelling-favorable winds and intensive mixing induced by the tropical cyclone. Throughout these processes, the coastal upwelling lagged behind alongshore wind by 2-4 days

Key words: eastern Hainan Island, upwelling, space-time structure, tropical cyclone

汪彧, 经志友, 齐义泉. 2013年夏季琼东海域上升流观测研究[J]. 热带海洋学报, 2016, 35(2): 40-49.

WANG Yu, JING Zhiyou, QI Yiquan. Coastal upwelling off eastern Hainan Island observed in the summer of 2013[J]. Journal of Tropical Oceanography, 2016, 35(2): 40-49.

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2013年夏季琼东海域上升流观测研究

Coastal upwelling off eastern Hainan Island observed in the summer of 2013

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