Improving tsunami hazard assessments depends on understanding what happens at the moment an earthquake ruptures beneath the seafloor, especially near deep-ocean trenches where measurements are often scarce. When a powerful magnitude 8.8 earthquake struck off Russia's Kamchatka Peninsula on July 29, 2025, it generated a tsunami that traveled across the Pacific.

Improving tsunami hazard assessments depends on understanding what happens at the moment an earthquake ruptures beneath the seafloor, especially near deep-ocean trenches where measurements are often scarce. When a powerful magnitude 8.8 earthquake struck off Russia’s Kamchatka Peninsula on July 29, 2025, it generated a tsunami that traveled across the Pacific.

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