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題名 | 瘋狗浪成因、定義及防災宣導=Mechanism of Mad-Dog Wave and Prevention of Its Disaster |
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作 者 | 李賢文; | 書刊名 | 氣象學報 |
卷期 | 44:3 2002.09[民91.09] |
頁次 | 頁13-29 |
分類號 | 351.941 |
關鍵詞 | 瘋狗浪; 機制; 防災; Mad dog wave; Mechanism; Disaster prevention; |
語文 | 中文(Chinese) |
中文摘要 | 瘋狗浪可分為兩種類型。第一種類型就是強烈的海浪,不斷的侵襲海岸,這是由於「振幅」很大的波浪所造成的。而第二種類型的瘋狗浪,是海上平靜無風,突然在岸邊出現一道大浪,衝擊海岸,這是由於「波長」很長的波浪所造成。而且波長與振幅合成的效應是非線性的,因此只要兩者都大時,即此二種類型瘋狗浪的機制同時發生,則此種波浪所含的能量是相當巨大的。瘋狗浪防範之宣導事項,需要注意它發生時的時間與地點。 瘋狗浪侵襲之危險時間:(一)颱風季節:臺灣周圍海域已有颱風時,雖然颱風尚離臺灣甚遠。氣象局尚未發布睦上颱風警報。(1)颱風侵臺前,即使颱風只經過臺灣的周圍海域,海上颱風警報尚未發布。(2)颱風侵臺後,海上颱風警報解除後。 (二)冬季季風:黃海或東海已有冷鋒產生,海面風浪甚強時。瘋狗浪侵襲之危險地點:(一)直立海岸的礁石。(二)自立壁上近海面的平臺。(三)海堤邊面海的消波 塊。(四)燈塔附近防波堤。(五)海底礁石甚多的海灘。上述的危險地點,各地方政府應該豎立禁止釣魚的標誌,並於颱風季節時加強警戒。 |
英文摘要 | A mad-dog wave is a slang for the wave which hurts people standing or sitting on tile coast. The mad-dog waves can be categorized into two types according to the character, The type-I mad-dog wave is a strong wind wave attacking the coast continuously during the winter monsoon. The type-II mad-dog wave is a freak wave which occurs frequently in the clear sky before or after typhoon approaching. Basically the type-II mad-dog is a swell resulted from a distant typhoon. The mechanism of mad-dog waves is due to the energy released by wave breaking. To prevent the disaster of mad-dog waves, one must not go fishing at seawalls, bulkheads, and revetments during the strong monsoon in winter and the typhoon period in summer. The jetties and breakwaters are dangerous places for touring and fishing during the strong monsoon and the typhoon period. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。