Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change
This article was published in the Journal of Ocean Modelling [© 2017 Elsevier Ltd] and the definite version is available at : http://doi.org/10.1016/j.ocemod.2017.01.002 The Journal's website is at: https://www.sciencedirect.com/science/article/pii/S1463500317300082?via%3Dihub
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© 2017 Elsevier Ltd
2018
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| الوصول للمادة أونلاين: | http://hdl.handle.net/10361/9461 http://doi.org/10.1016/j.ocemod.2017.01.002 |
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10361-94612018-02-15T05:20:51Z Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change Baba, Toshitaka Allgeyer, Sébastien Hossen, Md. Jakir Cummins, Phil R. Tsushima, Hiroaki Imai, Kentaro Yamashita, Kei Kato, Toshihiro Department of Mathematics and Natural Sciences, BRAC University 2011 Tohoku tsunami Boussinesq dispersion Elastic loading Gravitational potential change Numerical simulation Seawater density stratification This article was published in the Journal of Ocean Modelling [© 2017 Elsevier Ltd] and the definite version is available at : http://doi.org/10.1016/j.ocemod.2017.01.002 The Journal's website is at: https://www.sciencedirect.com/science/article/pii/S1463500317300082?via%3Dihub In this study, we considered the accurate calculation of far-field tsunami waveforms by using the shallow water equations and accounting for the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change in a finite difference scheme. By comparing numerical simulations that included and excluded each of these effects with the observed waveforms of the 2011 Tohoku tsunami, we found that all of these effects are significant and resolvable in the far field by the current generation of deep ocean-bottom pressure gauges. Our calculations using previously published, high-resolution models of the 2011 Tohoku tsunami source exhibited excellent agreement with the observed waveforms to a degree that has previously been possible only with near-field or regional observations. We suggest that the ability to model far-field tsunamis with high accuracy has important implications for tsunami source and hazard studies. Published 2018-02-14T06:49:31Z 2018-02-14T06:49:31Z 2017-03-01 Article Baba, T., Allgeyer, S., Hossen, J., Cummins, P. R., Tsushima, H., Imai, K., . . . Kato, T. (2017). Accurate numerical simulation of the far-field tsunami caused by the 2011 tohoku earthquake, including the effects of boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change. Ocean Modelling, 111, 46-54. 10.1016/j.ocemod.2017.01.002 14635003 http://hdl.handle.net/10361/9461 http://doi.org/10.1016/j.ocemod.2017.01.002 en https://www.sciencedirect.com/science/article/pii/S1463500317300082?via%3Dihub © 2017 Elsevier Ltd |
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Brac University |
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Institutional Repository |
| language |
English |
| topic |
2011 Tohoku tsunami Boussinesq dispersion Elastic loading Gravitational potential change Numerical simulation Seawater density stratification |
| spellingShingle |
2011 Tohoku tsunami Boussinesq dispersion Elastic loading Gravitational potential change Numerical simulation Seawater density stratification Baba, Toshitaka Allgeyer, Sébastien Hossen, Md. Jakir Cummins, Phil R. Tsushima, Hiroaki Imai, Kentaro Yamashita, Kei Kato, Toshihiro Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| description |
This article was published in the Journal of Ocean Modelling [© 2017 Elsevier Ltd] and the definite version is available at : http://doi.org/10.1016/j.ocemod.2017.01.002 The Journal's website is at: https://www.sciencedirect.com/science/article/pii/S1463500317300082?via%3Dihub |
| author2 |
Department of Mathematics and Natural Sciences, BRAC University |
| author_facet |
Department of Mathematics and Natural Sciences, BRAC University Baba, Toshitaka Allgeyer, Sébastien Hossen, Md. Jakir Cummins, Phil R. Tsushima, Hiroaki Imai, Kentaro Yamashita, Kei Kato, Toshihiro |
| format |
Article |
| author |
Baba, Toshitaka Allgeyer, Sébastien Hossen, Md. Jakir Cummins, Phil R. Tsushima, Hiroaki Imai, Kentaro Yamashita, Kei Kato, Toshihiro |
| author_sort |
Baba, Toshitaka |
| title |
Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| title_short |
Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| title_full |
Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| title_fullStr |
Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| title_full_unstemmed |
Accurate numerical simulation of the far-field tsunami caused by the 2011 Tohoku earthquake, including the effects of Boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| title_sort |
accurate numerical simulation of the far-field tsunami caused by the 2011 tohoku earthquake, including the effects of boussinesq dispersion, seawater density stratification, elastic loading, and gravitational potential change |
| publisher |
© 2017 Elsevier Ltd |
| publishDate |
2018 |
| url |
http://hdl.handle.net/10361/9461 http://doi.org/10.1016/j.ocemod.2017.01.002 |
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