The rupture likely jumped over some of these barriers, traveling in a cascade of slips rather than a clean, linear break. Furthermore, the depth of the rupture played a role.
Understanding the Duration of the Longest Earthquake Shaking Felt at the Surface
The prolonged motion generated a series of waves that traveled across the Pacific Ocean, demonstrating the global reach of such a massive geological event. Buildings were subjected to relentless shaking, which fatigue materials far more effectively than a quick, sharp jolt.
Impact and Legacy of the Event The sheer duration of the quake was a major factor in the catastrophic damage and the massive tsunami that followed. The Nazca Plate is not a uniform slab; it has irregularities and asperities that catch and release as it subducts.
Longest Earthquake Shaking Felt Surface Duration
6 One of the most powerful ever recorded Duration of Rupture ~10 minutes The primary metric for "longest earthquake" Maximum Mercalli Intensity XI (Extreme) Caused widespread devastation Tsunami Height 25 meters (82 ft) Affected coasts across the Pacific Geological Factors Contributing to the Length The extraordinary duration is attributed to the specific geometry and friction of the fault zone. While shaking might last for seconds or minutes, the rupture process itself can unfold over a much longer period.
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