Atkinson 1997 Intensity Model

Class Name

• RAtkinson1997IntensityModel

Location in Objects Pane

• Models > Model > Hazard > Earthquake > Intensity > Atkinson 1997 Intensity

Model Description

Model Form

• This model produces the spectral acceleration or the peak ground acceleration at specified locations for given magnitude and hypocenter location of several earthquake sources as input, based on the Atkinson-Boore (1997) attenuation relation.
• For more information, see Boore-Atkinson (1997)

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 to the Output Pane.

Period Parameter List

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

Magnitude

• Magnitudes of various earthquake sources

Hypocentre Location

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

Soil Type

• The type of soil that can be "Rock" or "FirmSoil"

Epsilon

• \({\varepsilon}\) = 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)

C 0 Uncertainty

• The coefficient of quadratic equations that approximate the estimates for the purpose of seismic hazard calculations.

C 1 Uncertainty

• The coefficient of quadratic equations that approximate the estimates for the purpose of seismic hazard calculations.

C 2 Uncertainty

• The coefficient of quadratic equations that approximate the estimates for the purpose of seismic hazard calculations.

C 3 Uncertainty

• The coefficient of quadratic equations that approximate the estimates for the purpose of seismic hazard calculations.

C a3 Uncertainty

• Correction factor based on empirical analysis results

C a4 Uncertainty

• Correction factor based on empirical analysis results

Csigma Uncertainty

• The standard deviation of model error

Cs Uncertainty

• Soil factor correction

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

• Atkinson, G. M., & Boore, D. M. (1997). Stochastic point-source modeling of ground motions in the Cascadia region. Seismological Research Letters, 68(1), 74–85