Spectral acceleration

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Ground motion hazard map for Hawaii, based on a 2% probability of exceeding 0.2 second spectral acceleration at 5 Hz in 50 years

Spectral acceleration (SA) is a unit measured in g (the acceleration due to

damping, although 5% damping is commonly applied.[1] The SA at different frequencies may be plotted to form a response spectrum
.

Spectral acceleration, with a value related to the

correlation between [short period] SA and PGA.[2]

Some seismic hazard maps are also produced using spectral acceleration.

See also

  • Seismic scale

External links

References