zea_2017_SC_UM: The GMPE of Zea 2016 for shallow crustal or upper mantle...

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

The GMPE of Zea 2016 for shallow crustal or upper mantle event

Description

This function calculates the ground motion median values and standard deviations

Usage

zea_2017_SC_UM(
  mag,
  T = 1000,
  fDepth,
  dist,
  DistV,
  eqkType,
  FaultMech,
  SiteClass
)

Arguments

mag	Moment magnitude, a numeric value
T	Period (sec) (range should be between 0.005 s and 5 s). Use 1000 (by default) for output the array of Sa with original Zhao et al per-defined periods
fDepth	Depth(km) to the top of ruptured plane (km)
dist	The closest distance (km) to rupture plane when is available, otherwise hypocentral distance.
DistV	The distance of volcanic path (km)
eqkType	The indicator of earthquake type: 1-shallow crustal; 2-upper mantel; only two values are valid
FaultMech	The indicator of fault mechanism: 1-Reverse; 2-Strike Slip; 3-Normal
SiteClass	The site class: 1 for SC I, 2 for SC II, 3 for SC III 4 for SC IV sites. The relationship between site class and Vs30 is given by Zhao et al., 2016 (https://doi.org/10.1785/0120150056). SC I: Vs30 > 600 m/s; SC II: 300 < Vs30 =< 600 m/s; SC III: 200 < Vs30 =< 300 m/s; SC IV: Vs30 <= 200 m/s

Value

A list of six elements is returned: Sa - median spectral acceleration prediction (in g); RockSa - median spectral acceleration prediction on Rock reference site (in g); SiteAmp - Site amplication response spectral (subtraction in log(g)); sigma - totla standard deviation (log); phiSS - single station standard deviation (log); period - the corresponding oscillator periods

References

Zhao, et al. (2017). Ground‐Motion Prediction Equations for the Vertical Component from Shallow Crustal and Upper‐Mantle Earthquakes in Japan Using Site Classes as the Site Term. Bulletin of the Seismological Society of America. 107(5), 2310-2327.

Examples

zea_2017_SC_UM(mag = 7.5, T = 1000, fDepth = 0.0, dist = 40.0, DistV = 0.0,
eqkType = 2, FaultMech = 2, SiteClass = 4)

zea_2017_SC_UM(mag = 7.5, T = c(0.025, 0.5), fDepth = 0.0, dist = 40.0,
DistV = 0.0, eqkType = 1, FaultMech = 2, SiteClass = 4)

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