12:00 PM - 12:15 PM
[HDS10-17] Maximum tsunami height prediction by directly using the correlation between ocean-floor pressure gauges and coastal tsunami heights.
Keywords:Tsunami height prediction, Ocean-floor pressure gauges, Gaussian process regression
In this study, we compared the tsunami prediction accuracy of the two frameworks, using the DONET ocean-bottom pressure values. We found that the prediction error RMSE of the latter approach, using Gaussian process regression [Igarashi et al., 2016], was 28.6% lower than that of the former one. In order to compare the performance of real-time prediction, we then investigated how many minutes each approach needs to predict the tsunami height with high accuracy after the earthquake occurs. We also found that our method only needs half
time with the same precision as the Multi-index method. Thus, our approach, which directly predicts the tsunami height from the ocean-bottom pressure gauges, has lower prediction error and higher immediacy than Multi-index method.