gov.usgs.earthquake.nshmp.gmm

Class McVerryEtAl_2000

java.lang.Object

gov.usgs.earthquake.nshmp.gmm.McVerryEtAl_2000

All Implemented Interfaces:

GroundMotionModel

public abstract class McVerryEtAl_2000
extends Object
implements GroundMotionModel

Abstract implementation of the ground motion model by McVerry et al. (2000).

Implementation details:

• McVerry proposes a hanging wall term but it was not specifically modeled and is not implemented here.
• New Zealand uses site classes that do not strictly correspond to fixed ranges of Vs30, in contrast with the US model; NZ soil site classes C and D consider stratification and site-specific response period. This implementation uses the following New Zealend site class to Vs30 values for convenience and consistency with the majority of other ground motion models:
  • Class A: 1500 < Vs30
  • Class B: 360 < Vs30 ≤ 1500
  • Class C: 250 < Vs30 ≤ 360
  • Class D: 150 < Vs30 ≤ 250
  • Class E: s30 ≤ 150 (not supported)

Model applicability: This needs work (TODO). Prior implementations restricted distance to 400km, foacl depths to 100km, and Magnitudes between 5.0 and 8.5. However the model supports a range of tectonic settings and McVerry et al. (2006) restrict magnitude to 7.5 and distance to 400km for curstal earthquakes, and restrict magnitudes to 8.0 and distances to 500km for subduction earthquake.

Reference: McVerry, G.H., Zhao, J.X., Abrahamson, N.A., and Somerville, P.G., 2000, Crustal and subduction zone attenuation realations for New Zealand earthquakes: Proc 12th World conference on earthquake engineering, Auckland, New Zealand, February, 2000.

Reference: McVerry, G.H., Zhao, J.X., Abrahamson, N.A., and Somerville, P.G., 2000, New Zealand acceleration response spectrum attenuation relations for crustal and subduction zone earthquakes: Bulletin of the New Zealand Society of Earthquake Engineering, v. 39, n. 4, p. 1-58.

Component: Model supports geometric mean or maximum of two horizontal components; only concrete implementations of max-horizontal component are provided at this time.

Author:

Brendon A. Bradley, Peter Powers

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.
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Method Detail

calc

public final 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

main

public static void main(String[] args)