Knowledge Management System Of South China Sea Institute of Oceanology,CAS
| 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; jingzhiyou@scsio.ac.cn | |
| 2015 | |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| Volume | 120Issue:3Pages:1993-2006 |
| Abstract | 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. |
| Department | [Jing, Zhiyou; Qi, Yiquan; Du, Yan] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Zhang, Shuwen; Xie, Lingling] Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang, Peoples R China ; LTO |
| Keyword | Upwelling Thermal Front Field Observation South China Sea |
| Subject Area | Oceanography |
| Document Type | 期刊论文 |
| Identifier | http://ir.scsio.ac.cn/handle/344004/14998 |
| Collection | 热带海洋环境国家重点实验室(LTO) |
| Corresponding Author | jingzhiyou@scsio.ac.cn |
| Recommended Citation 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,&jingzhiyou@scsio.ac.cn.(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. |
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