cb_2014_subroutine: The subroutine of GMPE of CB 2014

In wltcwpf/GMPE: A pacakge of commonly used Ground Motion Prediction Equations (GMPE)

The subroutine of GMPE of CB 2014

Description

This is a subroutine of CB 2014

Usage

cb_2014_subroutine(
  M,
  ip,
  Rrup,
  Rjb,
  Rx,
  W,
  Ztor,
  Zbot,
  dip,
  Fhw,
  Vs30,
  Z25in,
  Zhyp,
  lambda,
  Frv,
  Fnm,
  region,
  A1100 = 999
)

Arguments

M	Moment magnitude, a numeric value
ip	The index of working period in the per-defined periods: (0.010, 0.020, 0.030, 0.050, 0.075, 0.10, 0.15, 0.20, 0.25, 0.30, 0.40, 0.50, 0.75, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0, 7.5, 10.0, 0, -1)
Rrup	Closest distance (km) to the ruptured plane
Rjb	Joyner-Boore distance (km); closest distance (km) to surface projection of rupture plane
Rx	Site coordinate (km) measured perpendicular to the fault strike from the fault line with down-dip direction to be positive
W	Down-dip rupture width (km). 999 if unknown
Ztor	Depth(km) to the top of ruptured plane. 999 if unknown
Zbot	Depth(km) to the bottom of the seismogenic crust. It is needed only when W is unknown.
dip	Fault dip angle (in degree)
Fhw	Falg for hanging wall sites. 1 for sites on the hanging wall side of the fault, 0 otherwise.
Vs30	Shear wave velocity averaged over top 30 m (in m/s)
Z25in	Basin depth (km): depth from the groundsurface to the 2.5km/s shear-wave horizon. 999 if unknown.
Zhyp	Hypocentral depth of the earthquake measured from sea level. 999 if unknown.
lambda	Rake angle (in degree)
Frv	Flag of reverse fault. 1 for reverse fault, 0 otherwise.
Fnm	Flag of normal fault. 1 for normal fault, 0 otherwise.
region	Region indicator: 0 for global (incl. Taiwan); 1 for California; 2 for Japan; 3 for China or Turkey; 4 for Italy
A1100	Median estimated value of PGA on rock with Vs30 = 1100m/s. 999 if unknown

Value

An array of four values: (1) median spectral acceleration prediction (in g); (2) logarithmic standard deviation of spectral acceleration prediction; (3) logarithmic standard deviation of within event residuals; and (4) logarithmic standard deviation of between event residuals at the period of ip.

References

Campbell, K. W., and Bozorgnia, Y. (2014). NGA-West2 Ground Motion Model for the Average Horizontal Components of PGA, PGV, and 5 Acceleration Response Spectra. Earthquake Spectra, 30(3), 1087-1115.

wltcwpf/GMPE documentation built on July 27, 2024, 4:28 p.m.