They are grouped into four geographical zones according to known eddy generation mechanisms, and their statistics are discussed accordingly.

• 根据南海中尺度涡生成机理的不同，把这些中尺度涡分在四个不同的区，分别是台湾岛西南、吕宋岛西北、吕宋岛西南以及越南外海，并详细讨论了每个区的中尺度涡统计特征。