Captions of recorded ground motion

Year

Absolute acceleration component in terms of “g” (9.81 m/s²)

Duration (seconds)

Recording station and data source

Northridge

1994

0.424

24.42

Northridge station 0655, Data source: USGS.

Cope Mendocino

1992

0.385

36

Station: Rio Dell overpass, (CDMG station 89324).

Loma Prieta

1989

0.484

40

Station: Coyote lake dam SW Abut, 285, (CDMG station 57217).

Superstition Hills

1987

0.356

40

El Centro Imperial Co Center, (CDMG station 01335).