The 1960 Valdivia Earthquake (M9.5): The Largest Recorded Seismic Cataclysm

Seismic Science & Disaster Readiness 📅 2026-08-29 ⏱️ Read Time: 5 min ✍️ QuakeViewer3D Editorial Team

1. The M9.5 Benchmark of Earth's Geodynamics

On May 22, 1960, the Nazca Plate ruptured along 1,000 km off the Chilean coast, generating the largest earthquake ever recorded by modern seismographs.

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