Largest Peak Ground Acceleration measured in an earthquake

According to Official Guinness Records,

The largest peak ground acceleration measured in an earthquake was 4,022 cm/s2. The measurement was recorded by a soil-surface observation site operated by the National Research Institute for Earth Science and Disaster Prevention (Japan) during the Iwate-Miyagi earthquake in northeast Honshu, Japan, on 14 June 2008.

For a complete list of 2008 records, please visit 2008 Guinness Records in Japan.

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