Generic Attenuation Model

Class Name

RGenericAttenuationModel

Location in Objects Pane

Models > Model > Hazard > Earthquake > Intensity > Generic Attenuation

Model Description

Model Form

This model produces an intensity at specified locations for given magnitude and hypocenter location of several earthquake sources as input.
The functional form of the model is as follows:

DDM Sensitivities

Yes

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.

Structure Location List

List of the locations at which the intensity will be computed
The model will generate as many responses as the number of locations given here

Magnitude List

\({M}\) = magnitudes of various earthquake sources

Hypocentre Location List

Hypocenter locations of earthquake sources, which are used to compute the distance, \({R}\), to the structure locations.

Theta1

\({\vartheta _ 1}\) = Model parameter, typically 1.02 (Joyner and Boore 1981).

Theta2

\({\vartheta _ 2}\) = Model parameter, typically 0.249 (Joyner and Boore 1981).

Theta3

\({\vartheta _ 3}\) = Model parameter, typically 1 (Joyner and Boore 1981).

Theta4

\({\vartheta _ 4}\) = Model parameter, typically 0.00255 (Joyner and Boore 1981).

Epsilon

\({\varepsilon}\) = Model error, typically a normal random variable with a zero mean and a 0.26 standard deviation (Joyner and Boore 1981).

Output

\({I}\) = Intensities at each of the structure locations.
The outputs are automatically generated generic response objects, which take the object name of the model plus the name of the structure location object plus “Response”.

Right-click Menu

Remove

Removes the object.

References

Boore, D. M., & Joyner, W. B. (1982). The empirical prediction of ground motion. Bulletin of the Seismological Society of America, 72(6B), S43-S60