文献类型：期刊文献

英文题名：Volume and Nutrient Transports Disturbed by the Typhoon Chebi (2013) in the Upwelling Zone East of Hainan Island, China

作者：Zheng, Manli[1,2];Xie, Lingling[1,3];Zheng, Quanan[4];Li, Mingming[1,3];Chen, Fajin[1,3];Li, Junyi[1,3]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[2]Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510000, Peoples R China;[3]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental, Zhanjiang 524088, Peoples R China;[4]Univ Maryland, Dept Atmospher & Ocean Sci, College Pk, MD 20742 USA

年份：2021

卷号：9

期号：3

外文期刊名：JOURNAL OF MARINE SCIENCE AND ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000633791000001)、、Scopus(收录号：2-s2.0-85103196150)、WOS

基金：This research was funded by National Nature Science Foundation of China under 41776034 and 41476009, the National Program on Global Change and Air-Sea Interaction under GASI-02-SCS-YGST2-02, the Innovation Team Plan in the Universities of Guangdong Province under 2019KCXTF021, and Guangdong Province First-Class Discipline Plan under CYL231419012.

语种：英文

外文关键词：transport; nutrient; typhoon; shelf sea; South China Sea

外文摘要：Using cruise observations before and after the typhoon Chebi in August 2013 and those without the typhoon in July 2012, this study investigates variations in current structure, nutrient distribution, and transports disturbed by a typhoon in a typical coastal upwelling zone east of Hainan Island in the northwestern South China Sea. The results show that along-shore northeastward flow dominates the coastal ocean with a volume transport of 0.64 x 10(6) m(3)/s in the case without the typhoon. The flow reversed southwestward, with its volume transport halved before the typhoon passage. After the typhoon passage, the flow returned back northeastward except the upper layer in waters deeper than 50 m and the total volume transport decreased to 0.10 x 10(6) m(3)/s. For the cross-shelf component, the flow kept shoreward, while transports crossing the 50 m isobath decreased from 0.25, 0.12 to 0.06 x 10(6) m(3)/s in the case without the typhoon as well as before and after typhoon passage, respectively. For the along-shore/cross-shelf nutrient transports, SiO32- has the largest value of 866.13/632.74 mu mol/s per unit area, NO3- half of that, and PO43- and NO2- one order smaller in the offshore water without the typhoon. The values dramatically decreased to about one-third for SiO32-, NO3-, and PO43- after the typhoon, but changed little for NO2-. The disturbed wind field and associated Ekman flow and upwelling process may explain the variations in the current and nutrient transports after the typhoon.