Campbell and Bozorgnia 2008

class openquake.hazardlib.gsim.campbell_bozorgnia_2008.CampbellBozorgnia2008

Implements GMPE developed by Kenneth W. Campbell and Yousef Bozorgnia, published as “NGA Ground Motion Model for the Geometric Mean Horizontal Component of PGA, PGV, PGD and 5 % Damped Linear Elastic Response Spectra for Periods Ranging from 0.01 to 10s” (2008, Earthquake Spectra, Volume 24, Number 1, pages 139 - 171). This class implements the model for the Geometric Mean of the elastic spectra. Included in the coefficient set are the coefficients for the Campbell & Bozorgnia (2010) GMPE for predicting Cumulative Absolute Velocity (CAV), published as “A Ground Motion Prediction Equation for the Horizontal Component of Cumulative Absolute Velocity (CSV) Based on the PEER-NGA Strong Motion Database” (2010, Earthquake Spectra, Volume 26, Number 3, 635 - 650).

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Average Horizontal (GMRotI50)'

Supported intensity measure component is orientation-independent average horizontal GMRotI50

DEFINED_FOR_INTENSITY_MEASURE_TYPES = set([<class 'openquake.hazardlib.imt.SA'>, <class 'openquake.hazardlib.imt.CAV'>, <class 'openquake.hazardlib.imt.PGV'>, <class 'openquake.hazardlib.imt.PGD'>, <class 'openquake.hazardlib.imt.PGA'>])

Supported intensity measure types are spectral acceleration, peak ground velocity, peak ground displacement and peak ground acceleration Additional model for cumulative absolute velocity defined in Campbell & Bozorgnia (2010)

DEFINED_FOR_STANDARD_DEVIATION_TYPES = set(['Total', 'Inter event', 'Intra event'])

Supported standard deviation types are inter-event, intra-event and total, see section “Aleatory Uncertainty Model”, page 147.

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Active Shallow Crust'

Supported tectonic region type is active shallow crust

REQUIRES_DISTANCES = set(['rjb', 'rrup'])

Required distance measures are Rrup and Rjb.

REQUIRES_RUPTURE_PARAMETERS = set(['rake', 'dip', 'ztor', 'mag'])

Required rupture parameters are magnitude, rake, dip, ztor

REQUIRES_SITES_PARAMETERS = set(['z2pt5', 'vs30'])

Required site parameters are Vs30, Vs30 type (measured or inferred), and depth (km) to the 2.5 km/s shear wave velocity layer (z2pt5)

get_mean_and_stddevs(sites, rup, dists, imt, stddev_types)

See superclass method for spec of input and result values.

class openquake.hazardlib.gsim.campbell_bozorgnia_2008.CampbellBozorgnia2008Arbitrary

Implements the Campbell & Bozorgnia (2008) GMPE as modified to represent the arbitrary horizontal component of ground motion, instead of the Rotationally Independent Geometric Mean (GMRotI) originally defined in the paper.

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Horizontal'

Supported intensity measure component is arbitrary horizontal HORIZONTAL,