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題名 | 應用POM推算颱風暴潮之研究=On Validation of Storm Surge Prediction Using POM |
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作 者 | 邱銘達; 錢樺; 李汴軍; 高家俊; | 書刊名 | 海洋工程學刊 |
卷期 | 8:1 2008.06[民97.06] |
頁次 | 頁43-64 |
分類號 | 351.97 |
關鍵詞 | POM模式; 暴潮偏差; POM model; Storm surge; |
語文 | 中文(Chinese) |
中文摘要 | POM模式普遍應用於各種尺度海洋環流的模擬,本研究應用POM進行台灣海域颱風暴潮推算,並針對颱風極端狀況,討論POM模式設定條件對颱風暴潮推算的適用性與影響程度。首先測試不同的風阻力參數對暴潮計算的影響,其中以Smith and Banke(1975)的參數可以得到較爲貼近觀測值的計算結果。進一步討論天文潮與氣象暴潮的交互作用所產生的影響;最後討論使用2維模式或3維模式進行模擬運算時對結果的影響。從分析結果中發現,在台灣海峽內使用2維與3維的計算模式,對於天文潮的影響可以產生的差異達50公分約爲最大潮差的12%;暴潮與天文潮的交互作用對暴潮的影響最大約6公分,約爲颱風期間之最大暴潮偏差的10%。 |
英文摘要 | In the present study, Princeton Ocean Model (POM) is adopted to simulate a storm surge over Taiwan waters. Discussions of the model settings are carried out in considering the extreme conditions due to typhoon. First, the parameterizations of various drag coefficients, used for the estimation of the wind stress, have been tested. The results show that the formula proposed by Smith and Banke (1975) features better estimation compared to observed data. Furthermore, the surge-tide interaction has been investigated numerically. The maximum influence of surge-tide interaction is about 6 cm which means about 10% of the maximum surge height. Finally, the discrepancies in the two model experiments of surge simulation by using the 2D and 3D modes of POM have been discussed, respectively. The results show that the 2D and 3D modes can lead the difference of water level prediction about 50 cm in Taiwan Strait. |
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