Largest Earthquakes in Recorded History

About This Dataset

The chart illustrates the largest earthquakes recorded in history, showcasing their magnitudes and the years they occurred. The Valdivia Earthquake of 1960 holds the record with a magnitude of 9.5, followed closely by the Alaska Good Friday Earthquake in 1964 at 9.2. Other significant earthquakes include the Indian Ocean Earthquake and the Tohoku Earthquake, both measuring 9.1.

✨ AI Insight

The data reveals a striking concentration of the largest earthquakes in the mid-20th century, with three of the top five occurring between 1952 and 1964. The Valdivia Earthquake stands out not only as the most powerful recorded at 9.5 but also as a stark reminder of the seismic potential in subduction zones. The relatively close magnitudes of the Indian Ocean and Tohoku earthquakes (both at 9.1) suggest that while they share similar geological contexts, the impacts varied significantly due to population density and preparedness. The trend indicates that while these extreme events are rare, their consequences can be catastrophic, influencing building codes and disaster preparedness worldwide.

Source: US Geological Survey

Key Findings

Auto-computed highlights from this dataset

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Valdivia Earthquake leads with 10 in 2011.

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Average value in 2011: 9 · median: 9.

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1960 recorded the highest combined total across all categories.

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Gap in 2011: Valdivia Earthquake is 1.1× larger than Rat Islands Earthquake.