極端な気象擾乱における高波の非線形特性について  [in Japanese] NONLINEAR CHARACTERISTICS OF WAVE HEIGHT IN AN EXTREME WEATHER CONDITIONS  [in Japanese]

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Abstract

日本海沖では,稀に冬季を中心に急速に発達し台風並みの暴風雨をもたらす温帯低気圧が発生する.一方,太平洋沖では,夏季に台風が接近または上陸し,両者は沿岸部に大きな被害をもたらす.近年の研究により,波浪のスペクトル形状から最高波高<i>H</i><sub>max</sub>の頻度や期待値を求めるという方法が提案されている.しかし,実際の気象条件下で,どの程度の精度で推定可能かは不明である.そこで本研究では,ここ数年で特徴的な気象擾乱である,2012年4月に発生した日本海低気圧と同年9月に発生した台風1216号,および2014年10月に発生した台風1418号を対象に,スペクトル型波浪モデルを用いて有義波高<i>H</i><sub>1/3</sub>および最高波高<i>H</i><sub>max</sub>の推計を行った.

 In the Sea of Japan off the coast, sometimes the strong seasonal storm developed rapidly in winter. On the other hand, a few number of typhoons approaches or make landfall in the Pacific Ocean of Japan in summer. These tropical and extra-tropical cyclones give severe damage to coastal areas around Japan. Recent studies have proposed prediction model of expected value of <i>H</i><sub>max</sub>. Although the prediction theory has been validated by numerical model and wave flume experiments, the validation of the theory against field data is not examined well. In this study, characteristic extreme weather disturbances around Japan in the last few years, winter storm occurred in April 2012 and two severe typhoons in 2012 (Sanba) 2014 (Phanfone) are selected for analsys. This study was carried out for estimates of significant wave height <i>H</i><sub>1/3</sub> and maximum wave height <i>H</i><sub>max</sub> by spectral wave model SWAN.

Journal

  • Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 71(2), I_457-I_462, 2015

    Japan Society of Civil Engineers

Codes

  • NII Article ID (NAID)
    130005109235
  • Text Lang
    JPN
  • ISSN
    1884-2399
  • NDL Article ID
    027080261
  • NDL Call No.
    YH267-236
  • Data Source
    NDL  J-STAGE 
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