土木学会論文集B2(海岸工学)
Online ISSN : 1883-8944
Print ISSN : 1884-2399
海岸工学論文集第57巻
津波減衰過程のトレンドとばらつきの性質の遠地津波予測への活用可能性
林 豊今村 文彦越村 俊一
著者情報
ジャーナル フリー

2010 年 66 巻 1 号 p. 211-215

詳細
抄録

In order to evaluate the decay process of far-field tsunamis, we have revised the definition of tsunami coda and related measures - moving root mean squared amplitude (MRMS amplitude), and non-dimensional tsunami amplitude (NDA) - in this paper. We applied these measures to the tsunami waveform data of 2006 and 2007 Kuril Island earthquake tsunamis observed by tidal stations located in Japan. Analytical results of tsunami coda of these events indicate that decay time constants obtained at tidal stations along the Pacific coast of Japan have only small differences. Further we confirmed that the NDA seldom exceed three times of MRMS amplitude. Then we show the possible application of utilizing these characteristics of tsunami decay process to realize appropriate cancelation of tsunami warnings.

著者関連情報
© 2010 公益社団法人 土木学会
前の記事 次の記事
feedback
Top