bchydro_2011: The GMPE of BCHydro 2011 for subduction earthquakes

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

The GMPE of BCHydro 2011 for subduction earthquakes

Description

This function calculates the ground motion median values and standard deviations

Usage

bchydro_2011(
  M,
  T = 1000,
  Vs30,
  Rrup,
  Rhypo,
  Ftype,
  faba,
  depth,
  flag_deltaC1 = 1
)

Arguments

M	Moment magnitude, a numeric value
T	Period (sec) (range should be between 0 s and 10 s). Use 1000 (by default) for output the array of Sa with original BCHyrdo per-defined periods
Vs30	The time averaged shear wave velocity on the top 30 m.
Rrup	Closest distance (km) to the ruptured plane
Rhypo	Hypocentral distance(km)
Ftype	Flag for interface event or intraslab events: 0 for Interface - use rupture distance; 1 for Intraslab - use hypocentral distance.
faba	Flag for BackArc sites: 0 for Non-Backarc sites; 1 for Backarc sites
depth	The depth of hypocenter (km)
flag_deltaC1	Flag for Recommended deltaC1 Values: 0 for Recommended deltaC1 Values NOT period dependent (-0.5, 0.0, 0.5) as on the 06/2010 model; 1 for Recommended deltaC1 Values Period dependent as on the 08/2011 model. Note: here we implement only the CENTRAL deltaC1 values!

Value

A list of four elements is returned: Sa - median spectral acceleration prediction (in g); RockSa - median spectral acceleration prediction on Rock reference site (in g); sigma - totla standard deviation (log); period - the corresponding oscillator periods

References

BC Hydro subduction Ground motion model. A report to BC Hydro Engineering No. E658 - Vol. 3 May 2009 by Abrahamson, et al.

Examples

bchydro_2011(M = 6, T = 1000, Vs30 = 450, Rrup = 85, Rhypo = 100,
Ftype = 0, faba = 0, depth = 25, flag_deltaC1 = 1)

bchydro_2011(M = 7.5, T = c(0.01, 2.5), Vs30 = 450, Rrup = 85, Rhypo = 100,
Ftype = 1, faba = 1, depth = 65, flag_deltaC1 = 1)

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