1964年13号、14号台风和1970年9号、10号台风是西太平洋上两次典型的双台风合并过程。图1a、1b分别为两对双台风的路径图。图2a、2b分别为两对双台风旋转实况及其合并过程。 表1、2分别为两对双台风每6小时的旋转角速度。 这种合并过程,既与台风周围环境流场有关,又与双台风之间的互相旋转有关,整个过程大致上可分为三个阶段,现分别分析如下。 Typhoon Nos. 13 and 14 of 1964 and Typhoon Nos. 9 and 10 of 1970 were the two typical two-typhoon merger processes in the western Pacific. Figure 1a and Figure 1b show the path of two pairs of two typhoon respectively. Figures 2a and 2b show two pairs of double typhoon rotation and their merging process respectively. Table 1 and Table 2 show the rotation angular velocity of each pair of double typhoon every 6 hours. This merger process is not only related to the flow field around the typhoon, but also to the mutual rotation between the two typhoons. The whole process can be roughly divided into three stages, and the respective analyzes are as follows.