- 期刊
魯依絲颱風在台灣附近之路徑與地面結構分析
The Surface Structure and the Movement of Typhoon Louise (1959) over Taiwan Area
摘要
魯依絲颱風於1959年9月侵襲台灣，在其中心登陸所在地花蓮一帶造成不少災害，並在中心通過台灣後在阿里山一帶引進時雨量59 mm，12小時累積雨量234 mm之豪雨。本文主要以雷達和飛機定位資料分析此颱風在登陸前之中心移動情形，並以台灣地區之地面觀測資料分析其地面結構。結果顯示魯依絲颱風在登陸前之路徑較關島聯合颱風警報中心最佳路徑偏左，而在登陸前約六小時再向右偏並加速。在地面結構方面，由觀測可見此颱風結構受地形很大影響，而在原中心受中央山脈阻擋與破壞之同時，在中央山脈西側生成副中心，分析結果並顯示由潛熱釋放之熱力效應不是此副中心生成的主要機制，然而詳細之生成時間、位置與細部結構仍能由傳統觀測結果得知。
並列摘要
Typhoon Louise invaded Taiwan area in September 1959. Strong winds and heavy rainfalls caused lots of damages over northern Taiwan, especially in Hualien area. Severe rainfalls also occurred over A-li-san area after the passage of the typhoon. In this study, detail center locations from radar and pilot fixes are collected and discussed. The surface observations over Taiwan area of typhoon nearby are also analyzed. The results show that the center was to the left of the smoothed track provided by the Joint Typhoon Warning Center, Guam seven hours before the center made landfall. The center then accelerated and shifted rightward to made landfall over Taiwan near Hualien station. After the center made landfall, the original center was found decelerated and greatly affected by the Center Mountain Range. Meanwhile, a secondary center was organized over the west side of the mountain range. However, the detail structure, the exact location, and the exact time of the formation of the secondary center were not well identified. Our analysis also shows that the latent heating effect is not the major mechanism to the formation of the secondary center.