| 浙江省沿海縣級風暴潮危險性區(qū)劃研究 |
| 作者:李濤1 2 朱業(yè)3 付翔1 郭敬3 |
單位:1. 國家海洋環(huán)境預報中心, 北京 100081; 2. 國家海洋局海洋災害預報技術研究重點實驗室, 北京 100081; 3. 浙江省海洋監(jiān)測預報中心, 浙江 杭州 310007 |
| 關鍵詞:風暴潮 危險區(qū)劃 浙江沿海 縣級 |
| 分類號:P731.23 |
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| 出版年·卷·期(頁碼):2018·35·第一期(12-18) |
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摘要:
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| 以浙江省沿海13個潮位站30 a(1985—2014年)共85次的臺風風暴潮歷史過程資料為基礎,利用統(tǒng)計相關以及數(shù)值模擬對個別潮位站進行資料增補,確保資料豐富、全面。選用風暴增水和超警戒兩個自然屬性因子進行等級劃分,考慮權重后計算得到浙江沿海縣級風暴潮危險性指數(shù)。在此基礎上,以20 a資料時長和危險性指數(shù)7為衡量標準,通過資料法及包含歷史災情在內的綜合法對浙江沿海縣級風暴潮危險性進行區(qū)劃。研究結果表明:在33個浙江沿海縣中18個可劃為風暴潮災害重點防御區(qū),約占全部沿海縣的54.5%,主要位于浙江的中南部和杭州灣北岸。上述沿海縣在海洋災害風險管理和涉海產業(yè)的利用規(guī)劃中應重視風暴潮災害影響并應加強風暴潮災害風險評估工作。 |
| Based on the total 85 storm surge historical data from 13 tide gauge stations during 30 years (1985-2014) along the coast of Zhejiang province, the statistical and the numerical simulation are used to supplement the data of the individual station for the abundance and comprehensiveness. The two natural factors, the storm surge and the exceeded water level, are selected to rank the storm surge at different level. The county-level of storm surge risk index are calculated by considering the different weight of factors. Under this basis, taking 20 year data length and risk index 7 as the standard of division, the county-level regionalization are conducted by the data-analyzing method and the comprehensive method which includes the analyzing the historical disaster. The results show that 18 coastal counties are regionalized into the storm surge key preventing regions, nearly account for 54.5% of the total 33 coastal counties, which mainly located in the central and south coast of Zhejiang province and the north bank of Hangzhou Bay. The above coastal counties should pay attention to the impact of storm surge disasters in the management of marine disaster risk and the planning of marine industry, as well as the enhancement of the risk assessment of storm surge disaster. |
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