gov.usgs.earthquake.nshmp.gmm

Class MunsonThurber_1997

java.lang.Object

gov.usgs.earthquake.nshmp.gmm.MunsonThurber_1997

All Implemented Interfaces:

GroundMotionModel

public final class MunsonThurber_1997
extends Object
implements GroundMotionModel

Implementation of the Munson & Thurber (1997) ground motion model for horizontal peak ground acceleration (PGA) for the island of Hawaii. In keeping with prior NSHMP implementations of this older model, only lava sites are supported (Vs30 = 650 m/s).

For the 1998 Hawaii NSHM, maps were calculated for rock (Vs30 = 760 m/s) using the lava coefficients, as this was deemed close enough to the measured Vs30 = 650 m/s of the lava site velocity (C. Thurber, personal comm., 1998).

Note: This GMM is only valid for PGA and 0.2 seconds. 0.2 is supported through the linear scaling of log PGA ground motion. Also, for larger magnitudes (M > 7), an additional magnitude term derived from Boore, Joyner, and Fumal 1993) is applied. See also the 1998 Hawaii NSHM documentation.

Note: Direct instantiation of GroundMotionModels is prohibited. Use Gmm.instance(Imt) to retrieve an instance for a desired Imt.

Reference: Munson, C.G., and Thurber, C.H., 1997, Analysis of the attenuation of strong ground motion on the island of Hawaii, Bulletin of the Seismological Society of America, v. 87, n. 4, pp. 945-960.

Component: larger of the two horizontal

Author:

Allison Shumway, Peter Powers

See Also:

Gmm.MT_97

Method Summary

Modifier and Type	Method and Description
ScalarGroundMotion	calc(GmmInput in) Compute the scalar ground motion and its standard deviation for the supplied arguments.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

calc

public ScalarGroundMotion calc(GmmInput in)

Description copied from interface: GroundMotionModel

Compute the scalar ground motion and its standard deviation for the supplied arguments.

Specified by:

calc in interface GroundMotionModel

Parameters:

in - a ground motion model input argument container

Returns:

a scalar ground motion wrapper