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Resumen del producto

Zaitsev, O., A.B., Rabinovich & R.E., Thomson (2016). The Great Chilean Tsunamis of 2010, 2014 and 2015 on the Coast and Offshore of Mexico: Comparative Features Based on Open-Ocean Energy Parameterization. Fall Annual Meeting 2016 de la Unión Geofísica Americana. San Francisco, Estados Unidos de América, diciembre 12 - 16, 2016, 1.

The Great Chilean Tsunamis of 2010, 2014 and 2015 on the Coast and Offshore of Mexico: Comparative Features Based on Open-Ocean Energy Parameterization

Oleg Zaitsev, Alexander B. Rabinovich y Richard E. Thomson

The three recent great earthquakes offshore of Chile on 27 February 2010 (Maule,Mw 8.8), 1 April 2014 (Iquique,Mw 8.2) and 16 September 2015 (Illapel,Mw 8.3) generated major trans-oceanic tsunamis that spread throughout the entire Pacific Ocean and were measured by numerous coastal tide gauges and open-ocean DART stations. Statistical and spectral analyses of the tsunami waves from the three events recorded on the Pacific coast of Mexico enabled us to compare the events and to identify coastal “hot spots”, regions with maximum tsunami risk. Based on joint spectral analyses of tsunamis and background noise, we have developed a method for reconstructing the “true” tsunami spectra in the deep ocean. The “reconstructed” open-ocean tsunami spectra are in excellent agreement with the actual tsunami spectra evaluated from direct analysis of the DART records offshore of Mexico. We have further used the spectral estimates to parameterize the energy of the three Chilean tsunamis based on the total open-ocean tsunami energy and frequency content of the individual events.

Palabras clave: Chilean tsunamis; sea level; spectral analysis, Pacific coast of Mexico

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