Deep earthquakes can trigger tsunamis thousands of miles away
A massive tremor occurring 35 kilometers beneath the Philippines can force Japan to halt its coastal ferries and evacuate residents living along the Pacific.
When a magnitude 8.2 earthquake struck near the Philippine island of Mindanao, the energy released did not stop at the shoreline. Even though the rupture occurred at a depth of 35 kilometers, it displaced enough water to send a surge across the Philippine Sea. This phenomenon, known as a far-field tsunami, demonstrates how geological events in one nation can immediately dictate the daily rhythm of another thousands of miles away.
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