All Known Implementing Classes:

AbrahamsonEtAl_2014, AbrahamsonGulerce_2020, AbrahamsonSilva_1997, Atkinson_2008p, Atkinson_2010, Atkinson_2015, AtkinsonBoore_2003, AtkinsonBoore_2006, AtkinsonBoore_2006p, AtkinsonMacias_2009, BcHydro_2012, BooreAtkinson_2008, BooreEtAl_1997, BooreEtAl_1997_Alaska, BooreEtAl_2014, Campbell_1997, Campbell_2003, CampbellBozorgnia_2003, CampbellBozorgnia_2003_Alaska, CampbellBozorgnia_2003_Alaska.Gridded, CampbellBozorgnia_2008, CampbellBozorgnia_2014, ChiouYoungs_2008, ChiouYoungs_2014, ConusStableCrust_2014, FrankelEtAl_1996, Geomatrix_1993, Gomez_2022, Idriss_2014, KuehnEtAl_2020, MotazedianAtkinson_2005, MunsonThurber_1997, NgaEast, ParkerEtAl_2020, PezeshkEtAl_2011, PezeshkEtAl_2018, SadighEtAl_1997, ShahjoueiPezeshk_2016, SilvaEtAl_2002, SomervilleEtAl_2001, TavakoliPezeshk_2005, ToroEtAl_1997, UsgsPrviBackbone2025, WongEtAl_2015, YoungsEtAl_1997, ZhaoEtAl_2006
```
public interface GroundMotionModel
```
Interface implemented by all ground motion models (GMMs); these are also commonly referred to as ground motion prediction equations (GMPEs) or attenuation relationships. Direct instantiation of GMMs is discouraged in concrete implementations in favor of using the corresponding Gmm enum identifier and its Gmm.instance(Imt) method. Concrete implementations are public solely for the purpose of documentation.
Models generally have a single concrete implementation. However, for those supplying region- or source-specific variants, there will typically be an abstract base-model implementation and subclasses to handle each flavor (e.g. ZhaoEtAl_2006. Each flavor has a unique Gmm identifier.

Author:

U.S. Geological Survey

See Also:

Gmm

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`LogicTree<GroundMotion>`	`calc(GmmInput in)`	Computes a logic tree of scalar ground motions and standard deviations for the supplied arguments.
`default LogicTree<GroundMotion>`	`dampedCalc(GmmInput in, Gmm.Type type, double dampingRatio)`	Computes a logic tree of scalar ground motions via `calc(GmmInput)`, and then applies any damping scaling.
`Imt`	`imt()`	The intensity measure type (`IMT`) of this GMM instance.

- Method Detail
  - imt
```
Imt imt()
```
    The intensity measure type (IMT) of this GMM instance.
  - calc
```
LogicTree<GroundMotion> calc(GmmInput in)
```
    Computes a logic tree of scalar ground motions and standard deviations for the supplied arguments. This method is implemented by GMMs to provide the horizontal peak ground acceleration and (optionally) velocity (PGA, PGV) as well as 5% damped pseudo-spectral acceleration for periods between 0.01 s and 10 s. For most modern GMMs, ground motions are computed as the average horizontal component (RotD50) but many older GMMs use some other average horizontal measure (e.g. GMRotI50).
    
    Parameters:
    
    in - a ground motion model input argument container
  - dampedCalc
```
default LogicTree<GroundMotion> dampedCalc(GmmInput in,
                                           Gmm.Type type,
                                           double dampingRatio)
```
    Computes a logic tree of scalar ground motions via calc(GmmInput), and then applies any damping scaling. This method is called by most applications and services.
    
    Parameters:
    
    in - a ground motion model input argument container
    
    type - the GMM type
    
    damping -

Interface GroundMotionModel

Method Summary

Method Detail

imt

calc

dampedCalc