文献类型：期刊文献

英文题名：Effect of topography on the cold water region in the east entrance area of Qiongzhou Strait

作者：Bai, Peng[1,2];Yang, Jingling[1,2];Xie, Lingling[1,2];Zhang, Shuwen[3];Ling, Zheng[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang, Peoples R China;[2]Marine Resources Big Data Ctr South China Sea, Southern Marine Sci & Engn Guangdong Lab Zhanjian, Zhanjiang, Peoples R China;[3]Shantou Univ, Inst Marine Sci, Shantou, Peoples R China

年份：2020

卷号：242

外文期刊名：ESTUARINE COASTAL AND SHELF SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000568988800003)、、Scopus(收录号：2-s2.0-85086126152)、WOS

基金：We gratefully thank the constructive and insightful comments from Editor Prof. French and two anonymous reviewers that have contributed to the substantial improvements of the manuscript. This study received joint support from the Fund of Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) (No. ZJW-2019-08), the Program for Scientific Research Start-up Funds of Guangdong Ocean University (No. 101302/R18001), the National Natural Science Foundation of China (No. 41776034), the China Ocean Mineral Resources Research and Development Association program (No. DY135-E2-3-01), the National Key Research and Development Program of China (No. 2016YFC1401403), and the First-class Discipline Plan of Guangdong Province (No. CYL231419012).

语种：英文

外文关键词：Qiongzhou strait; Hainan island; ROMS; Upwelling; Cold water region

外文摘要：A cold water region will occur in the east entrance area of Qiongzhou Strait when upwelling develops off the northeast coast of Hainan Island. The effect of topography on this cold water region was investigated by combining satellite observations and numerical simulations. Multi-source high-resolution remote-sensed sea surface temperature images revealed that the western periphery of the cold water region frequently occurred at a quasi-fixed location with similar jagged structure. Compared with observations, the numerical model employed in this study could satisfactorily simulate the intense tidal currents in the strait, and reasonably reproduce the jagged western periphery of the cold water region. Under strong westward tidal flow, the cold upwelling water intruded deeply into the interior strait, whereas under sustained eastward tidal currents, much stronger tidal currents occurred where there were deeper waters connecting the inner strait, therefore the cold upwelling water faded towards east faster and formed the concave parts (looking in east-to-west direction) of the western periphery of the cold water region; conversely, convex parts would develop over the adjacent shallower shoals. The eastward movement of the cold water was dominated by topography-modified tidal currents, and only after sustained eastward tidal currents (usually in the second half or near the end of the eastward tidal current phase), the western periphery of the cold water region would occur at a quasi-fixed location with similar jagged shape. Moreover, the development of the upwelling off the northeast coast of Hainan Island, which was the precondition of the cold water region, was found to be mainly driven by sustained SE similar to S winds.