Peak Ground Acceleration (PGA) is a measure of the maximum acceleration felt by the ground during an earthquake. It is expressed in units of gravitational acceleration (g), where 1 g is equal to the acceleration due to Earth's gravity, approximately 9.81 meters per second squared (m/s²). PGA is an important parameter in seismic engineering and earthquake studies, as it provides valuable information about the potential intensity of ground shaking at a particular location.
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