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題名 | 民國86年颱風調查報告--中度颱風安珀(9717)=Report on Typhoon Amber of 1997 |
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作者 | 劉復誠; Liu, Henry Fu-cheng; |
期刊 | 氣象學報 |
出版日期 | 19980900 |
卷期 | 42:3 1998.09[民87.09] |
頁次 | 頁270-312 |
分類號 | 328.55 |
語文 | chi |
關鍵詞 | 颱風; 氣壓; 降雨量分布; 登陸; 路徑預報; Typhoon; Pressure; Distribution of rainfall; Landfall; Track forecast; |
中文摘要 | 本文之主要目的在探討民國86年第2個侵臺颱風--安珀(Amber)的發生經過、路徑 、強度變化、侵臺期間的氣壓、風速、降雨量分布及波浪高低變化,以及各種主、客觀颱風 路徑預報的誤差校驗分析,最後就安珀颱風侵臺後,臺灣各地區之災情予以統計說明。安珀 颱風是在菲律賓東北方海面形成,隨後即由緩慢至加速的向西北方向朝臺灣接近,其中心於 8 月 29 日清晨 3 時 50 分左右由花蓮秀姑巒溪口附近登陸, 再穿過中央山脈由臺中附近 出海,進入臺灣海峽登陸中國大陸後,迅速減弱為熱帶性低氣壓。就安珀颱風侵臺期間的氣 壓及風雨分析, 最低氣壓及最大風力均出現在颱風中心登陸附近的花蓮,分別為 957.9hPa 及 49.4m/s;就各地區風力分布比較,以北部、東北部及東部之風力最大;降雨量方面,亦 以迎風面的北部、東北部及東部雨量 (尤其山區 ) 最多,高達 500 公厘以上,背風面的中 南部較少。 至於波浪方面,花蓮於 8 月 28 日觀測到 6.49 公尺的示性波高。由於安珀颱 風之暴風雨範圍遍及全省,故除造成共 38 人死亡及輕重傷外,農業、水利、電力及交通總 損失高達新臺幣 14 億 6 千萬元以上。 就颱風路徑預報誤差校驗比較,中央氣象局的官方 24 小時及 48 小時平均誤差分別為 92 公里及 183 公里,顯示此次的颱風路徑預報表現尚 佳。 |
英文摘要 | This article mainly deals with thphoon Amber about its origination, evolution, track, and distribution of rainfall and variations of central pressures. Discussions on its verifications of various subjective and objective tracking forecasts are also included. Amber originated over the ocean northeast to the islands of thre Philippines and then moved northwestwardly toward Taiwan. Its center landed around the outlet of the Show-Gu- Luean Brook and later on moved away to the sea from the Taichung area. After passing through the Taiwan Strait, it made a second landfall on Mainland China, and finally dissipated as a tropical depression over land. The observations shows that there was a heavy rainfall over the northern, northeastern and eastern parts of Taiwan during Amber's passage. Owing to the effects of the rainbands within the northeast quadrant of Amber and the topographiy of Taiwan, a maximum accumulated rainfall of 861mm was observed during Amber's invasion. In addition, a peak gust of 49.4m/s and a minimum pressure of 957.9 hPa were observed at the Hualien station. With vigorous rainbands and strong gust winds Amber had the potential to make more severe damage than it did to the Taiwan area. To all subjective track-forecasts for Amber done by the Central Weather Bureau (CWB), the averaged 24hr track forecast error is 92 km and the averaged 48hr track forecast error is 183 km. Comparably, among all official track forecasts is lower than PGTW. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。