ECCOMAS 2024

Wave Maximum Height Inferences with Neural Networks for Spanish Tsunami Early Warning System

  • Rodríguez Gálvez, Juan Francisco (University of Malaga)
  • Macías, Jorge (University of Malaga)
  • Gaite, Beatriz (National Geographic Institute of Spain)
  • Castro, Manuel Jesús (University of Malaga)
  • Cantavella, Juan Vicente (National Geographic Institute of Spain)
  • Puertas, Luis Carlos (National Geographic Institute of Spain)

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Tsunami Early Warning Systems (TEWS) play a crucial role in minimizing the impact of tsunamis on coastal communities globally. In the NEAM region (North-East Atlantic, the Mediterranean, and connected Seas), historical approaches involve using Decision Matrices and precomputed databases due to the short time between tsunami generation and coastal impact. Overcoming real-time simulation challenges, the EDANYA group at the University of Málaga developed Tsunami-HySEA, a GPU code enabling Faster Than Real Time (FTRT) tsunami simulations [1]. In collaboration with the National Geographic Institute of Spain, we have extended the work done in [2] where we take advantage of the machine learning techniques and proposed a first approach to the use of neural networks (NN) to predict the maximum wave height and arrival time of tsunamis in the context of TEWS with very good results. This approach offers the advantage of minimal inference time and can be executed on any computer. It accommodates uncertain input data, delivering results within seconds. As tsunamis are rare events, numerical simulations using the Tsunami-HySEA are used to train the NN model. This phase demands numerous simulations, necessitating substantial High-Performance Computing (HPC) resources. Approximately 300,000 simulations have been done to cover different faults in the Atlantic ocean. The goal is to develop neural network models for predicting the maximum wave height of such tsunamis at multiple coastal locations simultaneously. To cover Huelva and Cádiz coast, 78 points in the coastline have been selected for their predictions. The main importance of this work is that the models developed will be implemented in the Spanish TEWS which will produce a estimation of the tsunami impact in seconds. REFERENCES [1] Beatriz Gaite, Jorge Macías, Juan Vicente Cantavella, Carlos Sánchez-Linares, Carlos González, and Luis Carlos Puertas. Analysis of faster-than-real-time (ftrt) tsunami simulations for the spanish tsunami warning system for the atlantic. GeoHazards, 3(3):371–394, 2022. [2] Juan F. Rodríguez, Jorge Macías, Manuel J. Castro, Marc de la Asunción, and Carlos Sánchez-Linares. Use of neural networks for tsunami maximum height and arrival time predictions. GeoHazards, 3(2):323–344, 2022.