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Why Kamchatka's magnitude 8.8 earthquake brought a smaller tsunami—and where risk may remain

phys.org·Tohoku University·about 1 month ago
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Geoscience Letters (2026). DOI: 10.1186/s40562-026-00471-4"> Tectonic overview. Gray and red stars are the epicenters of the 1952 M9.0 and 2025 M8.8 earthquakes, while circles show their aftershocks. Dashed contours show the plate interface between the Pacific and the Okhotsk plates. Credit: Geoscience Letters (2026). DOI: 10.1186/s40562-026-00471-4 On July 29, 2025, a magnitude 8.8 earthquake occurred near the Kamchatka Peninsula. It was so powerful that it ranks as the sixth-largest earthquake ever recorded by modern instruments. Using this giant earthquake as a learning opportunity, researchers at Tohoku University's International Research Institute of Disaster Science (IRIDeS) combined multiple datasets in order to reconstruct the movement of the faults (fractures in the earth's crust). Their analysis, published in Geoscience Letters , could help us better understand the tsunami risks faced by local communities, and how to protect them.…

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