Abstract
Natural oscillation modes of the Bay of Concepcion are determined by means of Empirical Orthogonal Functions. Simulations of the 2010 and 1960 tsunamis were performed using 4 nested grids of 120, 30, 6 and 1″ arc resolution with the NEOWAVE model. In addition, a spectral analysis of tsunami waveforms at both the continental shelf and inside the Bay of Concepcion was performed, and the results were contrasted with natural oscillation periods. The results showed that the natural oscillation period of the first, second and third modes of the Bay were found to be 95, 37 and 32 min. It was found that large tsunami amplifications at the southern shore of the Bay of Concepcion were due to tsunami resonance and coupling between the shelf resonance and bay oscillations. Large inundations heights during 2010 tsunami were caused by the tsunami exciting the fundamental oscillation mode of the Bay. The relative low inundation during the 1960 tsunami was due to the tsunami exciting the higher frequency.
| Original language | English |
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| Title of host publication | Proceedings of the Coastal Engineering Conference |
| Publisher | American Society of Civil Engineers (ASCE) |
| Volume | 2014-January |
| ISBN (Print) | 9780989661126 |
| Publication status | Published - 2014 |
| Event | 34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Korea, Republic of Duration: 2014 Jun 15 → 2014 Jun 20 |
Other
| Other | 34th International Conference on Coastal Engineering, ICCE 2014 |
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| Country | Korea, Republic of |
| City | Seoul |
| Period | 14/6/15 → 14/6/20 |
Keywords
- 1960 tsunami
- 2010 tsunami
- Bay of Concepción
- Fundamental mode
- Shelf resonance
- Tsunami resonance
ASJC Scopus subject areas
- Civil and Structural Engineering
- Ocean Engineering
- Oceanography