Campbell and Bozorgnia 2003¶
Implements GMPE developed by Kenneth W. Campbell and Yousef Bozorgnia and published as “Updated Near-Source Ground-Motion (Attenuation) Relations for the Horizontal and Vertical Components of Peak Ground Acceleration and Acceleration Responce Spectra”, Bulletin of the Seismological Society of America, Vol. 93, No. 1, pp. 314-331, 2003.
The class implement the equation as modified by the United States Geological Survey - National Seismic Hazard Mapping Project (USGS-NSHMP) for the 2007 Alaska model (http://earthquake.usgs.gov/hazards/products/ak/2007/).
The class replicates the equation as coded in
hazFXv7.favailable from http://earthquake.usgs.gov/hazards/products/ak/2007/software/.
The equation compute mean value for the ‘firm rock’ conditon.
COEFFS= <openquake.hazardlib.gsim.base.CoeffsTable object>¶
Coefficient table (table 4, page 321. Coefficients for horizontal component and for corrected PGA)
DEFINED_FOR_INTENSITY_MEASURE_COMPONENT= 'Average horizontal'¶
Supported intensity measure component is the geometric mean of two horizontal components (see paragraph ‘Strong-Motion Database’, page 316)
DEFINED_FOR_INTENSITY_MEASURE_TYPES= set([<class 'openquake.hazardlib.imt.PGA'>, <class 'openquake.hazardlib.imt.SA'>])¶
Supported intensity measure types are PGA and SA (see Abstract)
Supported standard deviation type is Total (see equations 11, 12 pp. 319 320)
DEFINED_FOR_TECTONIC_REGION_TYPE= 'Active Shallow Crust'¶
Supported tectonic region type is ‘active shallow crust’ (see Abstract)
REQUIRES_DISTANCES= set(['rjb', 'rrup'])¶
Required distance measure are RRup and Rjb (eq. 1 and following, page 319).
REQUIRES_RUPTURE_PARAMETERS= set(['rake', 'dip', 'mag'])¶
Required rupture parameters are magnitude, rake and dip (eq. 1 and following, page 319).
No sites parameters are required. Mean value is computed for ‘firm rock’.