Hurricane Otis: seismological footprint

We used the records of seismic stations located in Guerrero state belonging to the National Seismological Survey (Servicio Sismologico Nacional) of Mexico network to fingerprint hurricane-induced seismic noise. The horizontal and vertical components of the seismometers are evaluated to investigate the signal source and energy produced by Hurricane Otis, which hit the offshore of Acapulco city on October 25, 2023, as hurricane Category 5. The seismic stations recorded the energy of Otis even though it was located far away from the coast (~ 861.1 km). Two main beam power directivities were found, NWW-SEE and W-E, and the slowness ranged from 2.4 to 2.7 and from 2.7 to 3.0 s/km for horizontal and vertical components, respectively. The stations record more energy as Hurricane Otis approaches Acapulco. From the spectrograms, the evolution of Otis could be observed, highlighting the important use of the seismic networks in the study and monitoring of meteorological phenomena.