Abrahamson Silva 2008 Intensity Model

Class Name

• RAbrahamsonSilva2008IntensityModel

Location in Objects Pane

• Models > Model > Hazard > Earthquake > Intensity > Abrahamson Silva 2008 Intensity

Model Description

Model Form

• This model produces the spectral acceleration, peak ground acceleration, or peak ground velocity at specified locations for given magnitude and hypocenter location of several earthquake sources as input, based on the Abrahamson-Silva (2008) attenuation relation.
• Depth of each earthquake is predicted based on the magnitude.
• For more information, see Abrahamson-Silva (2008).

DDM Sensitivities

• No

Properties

Object Name

• Name of the object in Rt
• Allowable characters are upper-case and lower-case letters, numbers, and underscore (“_”).
• The name is unique and case-sensitive.

Display Output

• Determines whether the model is allowed to print messages in the Output Pane.

Magnitude List

• Magnitudes of various earthquake sources

Hypocentre Location List

• Hypocenter locations of earthquake sources, which automatically will yield the radius \({R}\) to the various output locations.

Fault Types

• Fault mechanism that can be either NormalSlip, StrikeSlip, or ReverseSlip.

Shock Type

• Shock type that can be either MainShock or AfterShock.

Response Type

• Type of the response than can be either \({S_a}\), \({PGA}\), or \({PGV}\)

Period List

• List of the natural periods at which the intensity is evaluated.

Epsilon Uncertainty List

• Intra-event model error, typically a standard normal random variable

Eta Uncertainty List

• Inter-event model error, typically a standard normal random variable

Structure Location List

• List of the locations where the intensity will be computed at them (the output will give as many intensity values as the locations provided here)

Shear Wave Velocity List

• List of the shear wave velocities at specified locations

Output

• Earthquake intensities (as many as the locations provided in the input)
• The output is an automatically generated generic response object, which takes the object name of the model plus “Response”.

Right-click Menu

Remove

• Removes the object.

References

• Abrahamson, N., & Silva, W. (2008). Summary of the Abrahamson & Silva NGA ground-motion relations. Earthquake Spectra, 24(1), 67–97