Peak ground velocity from peak ground acceleration

Evaluates the in-house rock regression of newmark 1.7.1 that gives each sampled peak ground acceleration its peak ground velocity, the velocity the pulse equations of BM19 in evaluateFlexibleDisplacement() read.

Usage

estimatePGV(PGA)

Arguments

PGA

Peak ground accelerations in g, finite and positive.

Value

Peak ground velocities in cm/s, aligned with PGA.

Mathematics

$$PGV = 100\, PGA^{1.0529}\, e^{0.1241}$$ with PGA in g and PGV in cm/s, a median relation without dispersion, fitted on rock records (SeVyT 2023 dataset, as recorded in newmark 1.7.1). It is evaluated realization by realization, so a sampled PGV stays paired with its PGA.

Examples

estimatePGV(PGA = c(0.1, 0.5))
#> [1] 10.02296 54.56843