BooreEtAl_1997_Alaska (nshmp-lib)

java.lang.Object
- gov.usgs.earthquake.nshmp.gmm.BooreEtAl_1997_Alaska

All Implemented Interfaces:

GroundMotionModel
```
public class BooreEtAl_1997_Alaska
extends Object
implements GroundMotionModel
```
Alaska-specific implementation of the Boore, Joyner & Fumal (1997) ground motion model for shallow earthquakes in active continental crust. This implementation was created to match fortran implementation with custom coefficients for different tectonic settings and styles of faulting. It's not clear what the relationship between the published 'b1' coefficients is and the values included in the fortran input files. This implementation is only for soft rock sites (Vs30 = 760 m/s).
Component: random horizontal

Author:

U.S. Geological Survey

See Also:

Gmm.BJF_97_AK

Method Summary

All Methods Instance Methods Concrete 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.
`Imt`	`imt()`	The intensity measure type (`IMT`) of this GMM instance.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface gov.usgs.earthquake.nshmp.gmm.GroundMotionModel
dampedCalc

- Method Detail
  - imt
```
public Imt imt()
```
    Description copied from interface: GroundMotionModel
    
    The intensity measure type (IMT) of this GMM instance.
    
    Specified by:
    
    imt in interface GroundMotionModel
  - calc
```
public LogicTree<GroundMotion> calc(GmmInput in)
```
    Description copied from interface: GroundMotionModel
    
    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).
    
    Specified by:
    
    calc in interface GroundMotionModel
    
    Parameters:
    
    in - a ground motion model input argument container