Summer upwelling and thermal fronts in the northwestern South China Sea: Observational analysis of two mesoscale mapping surveys

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Summer upwelling and thermal fronts in the northwestern South China Sea: Observational analysis of two mesoscale mapping surveys
	Jing, Zhiyou; Qi, Yiquan; Du, Yan; Zhang, Shuwen; Xie, Lingling
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2015
卷号	120 期号:3 页码:1993-2006
关键词	upwelling thermal front field observation South China Sea
通讯作者	jingzhiyou@scsio.ac.cn
中文摘要	Persistent coastal upwelling and upwelling-induced thermal fronts in the northwestern South China Sea are investigated using satellite measurements, two intensive mesoscale mapping surveys and three bottom-mounted ADCPs. The results indicate that pronounced surface cooling and upwelling-related fronts with a width of 20-50 km occur around Hainan Island and persist through the summer upwelling season. Driven by the prevailing southwesterly monsoon, the subsurface cooling band is approximate to 6 degrees C colder than the water offshore of the East Coast, where the thermal gradients are generally more than 0.1 degrees C/km. The cold and nutrient-rich coastal water is identified to be derived primarily from the deep water of the outer shelf. At the same time, the spatial structure of the upwelling and thermal front, as well as the upwelling-related coastal currents, is significantly regulated by wind forcing. A prominent lagged correlation between the moored temperature records and alongshore wind stress is detected in the East Coast. The correlation coefficient is -0.8 with the temperature lagging behind wind stress by 2.2 days, indicating that the cooling band off the East Coast is dominated mostly by the alongshore southwesterly monsoon during the upwelling season.
学科主题	Oceanography
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/14998]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Jing, Zhiyou,Qi, Yiquan,Du, Yan,et al. Summer upwelling and thermal fronts in the northwestern South China Sea: Observational analysis of two mesoscale mapping surveys[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2015,120(3):1993-2006.
APA	Jing, Zhiyou,Qi, Yiquan,Du, Yan,Zhang, Shuwen,&Xie, Lingling.(2015).Summer upwelling and thermal fronts in the northwestern South China Sea: Observational analysis of two mesoscale mapping surveys.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,120(3),1993-2006.
MLA	Jing, Zhiyou,et al."Summer upwelling and thermal fronts in the northwestern South China Sea: Observational analysis of two mesoscale mapping surveys".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 120.3(2015):1993-2006.