2016 Fiscal Year Final Research Report
Study on possibility of tsunami height estimation using crustal movement and earthquake ground motion obtained at coastal area
| Project/Area Number |
26560169
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Social systems engineering/Safety system
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| Research Institution | Hirosaki University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 津波高さ / オンサイト予測 / 地殻変動 / 強震記録 / 積分方法 / 最大変位 |
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| Outline of Final Research Achievements |
The relationship between the maximum ground displacement up to the period of 40 seconds and crustal movement during an earthquake and the tsunami height were experimentally investigated. Using data from the 2011 Tohoku Region Pacific Offshore Earthquake and the 2003 Tokachi-Oki Earthquake, we established an empirical formula for amounts of horizontal crustal deformation and tsunami heights. In addition, tsunami calculations were made for several earthquake tsunamis those were occurred around East Japan in the past.
Experimental studies were also conducted to investigate the possibility of estimating crustal deformation by integrating seismic acceleration records. As a result, it was found that the sampling frequency does not have a large influence on integration, and the cause of the divergence of the displacement is mainly the long period noise and the rotation of the seismometer and it is not the integration method.
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| Free Research Field |
地震工学
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