Largest Peak Ground Acceleration measured in an earthquake

Largest Peak Ground Acceleration measured in an earthquake
Who
NIED National Research Institute for Earth Science and Disaster Prevention
Where
Japan (Honshu)
When
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.