An anticyclonic eddy near the Nansha Trough,an anticyclonic eddy east of the Nansha Islands and a weak cyclonic eddy near the Nansha Islands occur in winter,and an anticyclonic eddy near t...

• 冬季,存在南沙海槽反气旋式涡、东南沙反气旋式涡和较弱的南沙气旋式涡;夏季,存在南沙反气旋式涡、巴拉望海槽西侧的气旋式涡和东南沙气旋式涡。