Edge waves, continental shelf fueled the 2021 Acapulco Bay tsunami

Trapped inside the shoreline of a bay, the resonant interactions of a tsunami with regular waves can prolong the tsunami disturbance. For the 2021 magnitude 7 Acapulco, Mexico earthquake and tsunami, edge waves in the bay and the short continental shelf also had a surprisingly significant effect on the tsunami's duration, according to a new study published in the Bulletin of the Seismological Society of America.

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