一般化TMAスペクトルの修正とその積分特性量に対する高精度近似式の提案

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書誌事項

タイトル別名
  • Correction to a Generalized TMA Spectrum and Proposal of Highly Accurate Approximation Expressions for its Integral Quantities
  • イッパンカ TMA スペクトル ノ シュウセイ ト ソノ セキブン トクセイリョウ ニ タイスル コウセイド キンジシキ ノ テイアン
公開日
2008
DOI
  • 10.2208/proce1989.55.116
公開者
公益社団法人 土木学会

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説明

We present a corrected form of a universal frequency spectrum of wind waves in finite depth water under ideal generation condition made by Yamaguchi (1988). It is a generalized form (G-TMA) of the TMA spectrum proposed by Bouws et al.(1985) as an extension of the JONSWAP spectrum in deep water. The G-TMA spectrum covers other universal deep-water spectra such as the Donelan spectrum and shallow water extensions such as the FRF spectrum. We indicate that the supposed peak frequency fp in the G-TMA spectrum is actually not the peak frequency. This is remedied in our generalized form, with a non-trivial term. In addition, we present rather accurate approximations of spectral moments in terms of total wave energy and various average frequencies.

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