bssa_2014_nga: The GMPE of BSSA 2014

In wltcwpf/RPSHA: This package implements LASSO to conduct earthquake event/ground motion map selection

The GMPE of BSSA 2014

Description

This function calculates the ground motion median values and standard deviations

Usage

bssa_2014_nga(M, period, Rjb, Fault_Type, region, z1, Vs30, coeffs)

Arguments

M	A list of moment magnitudes for all interest of events
period	The period of interest. -1 for PGV, 0 for PGA. A numeric value.
Rjb	A list of Joyner-Boore distance (km); closest distance (km) to surface projection of rupture plane. The length should equal to the length of moment magnitudes
Fault_Type	A list of fault type indicators: 0 for unspecified fault; 1 for strike-slip fault; 2 for normal fault; 3 for reverse fault. The length should equal to the length of moment magnitudes
region	A list of region indicators: 0 for global (incl. Taiwan); 1 for California; 2 for Japan; 3 for China or Turkey; 4 for Italy. The length should equal to the length of moment magnitudes
z1	Basin depth (km): depth from the ground surface to the 1km/s shear-wave horizon. -999 if unknown. A numeric value.
Vs30	Shear wave velocity averaged over top 30 m (in m/s). A numeric value.
coeffs	The coefficient table of BSSA 2014. You can use the internal saved data object, bssa_2014_coeffs

Value

A dataframe with four calculated columns, median/sigma/phi/tau. Each row is the calcualted values for each event.

References

Boore, D. M., Stewart, J. P., Seyhan, E., and Atkinson, G. M. (2014). NGA-West2 Equations for Predicting PGA, PGV, and 5% Damped PSA for Shallow Crustal Earthquakes. Earthquake Spectra, 30(3), 1057-1085.

wltcwpf/RPSHA documentation built on July 6, 2023, 1:02 a.m.