bchydro_2019: The GMPE of BCHydro 2019 for subduction earthquakes...

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

The GMPE of BCHydro 2019 for subduction earthquakes (incoporated regional updates for Japan)

Description

This function calculates the ground motion median values and standard deviations

Usage

bchydro_2019(M, T = 1000, Rrup, Rhypo, F_faba, Vs30, F_event, Zh)

Arguments

M	Moment magnitude, a numeric value
T	Period (sec) (range should be between 0 s and 10 s). PSA at 0.01 s will be return for any T <= 0.01 s. Use 1000 (by default) for output the array of Sa with original BCHyrdo per-defined periods
Rrup	Closest distance (km) to the ruptured plane. Use for Interface.
Rhypo	Hypocentral distance(km). Use for Intraslab.
F_faba	Flag for BackArc sites: 0 for Forearc or unknown sites; 1 for Backarc sites
Vs30	The time averaged shear wave velocity on the top 30 m.
F_event	Flag for interface event or intraslab events: 0 for Interface - use rupture distance; 1 for Intraslab - use hypocentral distance.
Zh	The depth of hypocenter (km)

Value

A list of five elements is returned: Sa - median spectral acceleration prediction (in g); sigma - totla logarithmic standard deviation (log); phi - within event residuals logarithmic standard deviation (log); tau - between event residuals logarithmic standard deviation (log); period - the corresponding oscillator periods

References

Abrahamson, N., Gregor, N., and Addo, K. (2019). BC Hydro Ground Motion Prediction Equations

Examples

bchydro_2019(M = 7.8, T = 1000, Rrup = 85, Rhypo = 100, F_faba = 0, Vs30 = 300, F_event = 0,
Zh = 25)

bchydro_2019(M = 7.8, T = c(0.010, 0.020, 0.030, 0.050, 0.075, 0.100, 0.150, 0.200, 0.250, 0.300,
0.400, 0.500, 0.600, 0.750, 1.000, 1.500, 2.000, 2.500, 3.000, 4.000, 5.000), Rrup = 85,
Rhypo = 100, F_faba = 1, Vs30 = 300, F_event = 1, Zh = 65)

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