Dispersion Analysis of Tsunami Propagation with the Consideration of Water Compressibility and Earth Elasticity for the Improvement of Prediction Accuracy of Far-field Tsunamis
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- TAKAGAWA Tomohiro
- Port and Airport Research Institute
Bibliographic Information
- Other Title
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- 水の圧縮性と地殻弾性を考慮した津波の分散関係解析：遠地津波予測の精度向上に向けて
Abstract
The discrepancy of tsunami arrival time between the tsunami simulation and the real observation has been widely recognized since the 27 February 2010 Chile tsunami and the 11 March 2011 Japan tsunami. The effect of ocean-water compressibility and earth elasticity on tsunami propagation speed was analyzed on the basis of a multilayered earth model. A correction term of these effects was introduced to ordinary linear long wave equations. Calculated waveforms with the correction were quantitatively compared with observed ones of the two tsunamis. The accuracy of far-field tsunami simulation was significantly improved without any arbitrary parameter.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 69 (2), I_426-I_430, 2013
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001205319011456
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- NII Article ID
- 130004551112
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- ISSN
- 18838944
- 18842399
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed