RAPID-N

Property Estimator

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Name	Ornthammarath et al. (2010)
Property	Peak Ground Acceleration
Type	Function
Function	`if ([Vs30:m/s] > 750) $S = 0; else if ([Vs30:m/s] > 360) $S = 1; else return; return pow(10,-2.622+0.643[Mw]-1.249log10(sqrt(pow([df:km], 2)+pow(3.190, 2)))+0.344*$S);`
Unit	m/s²
Validity Conditions	Moment Magnitude: 5.1–6.5; Focal Depth: 10–15 km; Faulting Mechanism: Strike-slip; Distance to Projection of Rupture Plane on Surface: < 80 km
Validity Regions	Iceland Region Iceland
Precedence	Auto
Disabled	No
References	Douglas, J., "Ground-motion prediction equations 1964-2010", 2011 Ornthammarath, T.; Douglas, J.; Sigbjörnsson, R.; Lai, C. G., "Assessment of strong ground motion variability in Iceland", 2010
Notes	See Douglas (2011), page 265. Validation: M = 5.0, d = 10 km, Vs30 = 800 m/s : PGA = 0.20783391649922 m/s^2 M = 6.0, d = 10 km, Vs30 = 800 m/s : PGA = 0.91351655400835 m/s^2 M = 5.0, d = 100 km, Vs30 = 800 m/s : PGA = 0.012437243790436 m/s^2
Access	Public