Tsunamis in the Mexican coasts during the period 2009-2018 and their behavior

The main characteristics of the tsunamis that occurred in Mexico in the period 2009-2018 and their predominant features are analyzed. During this period there were eleven tsunamis. A total of 54 time series with sea level signals associated with tsunamis were analyzed. In each case a high-pass filter was applied to remove the astronomical tide, and the computation of arrival time, travel times, distance from the source, heights, maximum amplitudes and periods were conducted. A spectral analysis was performed to determine the dominant frequencies for each tsunami and sea level station, and the decay time of the tsunami wave train was computed adjusting an exponential function. The spectral patterns were more similar for each location than for the same tsunami, which was concluded from the qualitative analysis of the spectra and their correlations. The maximum wave height occurs after 1 to 5 hours of the arrival of the first wave for local events, and between 6 to 22 hours for remote events. The characteristic frequencies and behavior for each location were identified and is expected that will be similar in future events, therefore these results may help decision makers in the implementation of risk reduction policies.