Boore, Joyner and Fumal 1997

class openquake.hazardlib.gsim.boore_1997.BooreEtAl1997GeometricMean

Implements GMPE developed by David M. Boore and William B. Joyner and Thomas E. Fumal (1997). “Equations for Estimating Horizontal Response Spectra and Peak Acceleration form Western North American Earthquakes: A Summary of Recent Work”. Seismological Research Letters. 68(1). 128 - 153

COEFFS = <openquake.hazardlib.gsim.base.CoeffsTable object>

Coefficient table is constructed from values in Table 8 Note that for periods between 0.1 s and 0.18s the inter-event term is originally 0. As this was causing test warnings we have set this to an arbitrarily infinitesimal number

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Average horizontal'

Supported intensity measure component is geometric mean

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

Supported intensity measure types are spectral acceleration, peak ground velocity and peak ground acceleration, see table 3 pag. 110

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

Supported standard deviation types are inter-event, intra-event and total

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Active Shallow Crust'

Supported tectonic region type is active shallow crust, see paragraph ‘Introduction’, page 99.

REQUIRES_DISTANCES = set(['rjb'])

Required distance measure is Rjb.

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

Required rupture parameters are magnitude, and rake.

REQUIRES_SITES_PARAMETERS = set(['vs30'])

Required site parameters is Vs30.

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

See superclass method for spec of input and result values.

class openquake.hazardlib.gsim.boore_1997.BooreEtAl1997GeometricMeanUnspecified

Where the faulting mechanism need not be specified it is preferable to use this instance of the Boore et al (1997) GMPE, which omits the need for rake to be defined.

REQUIRES_RUPTURE_PARAMETERS = set(['mag'])

Required rupture parameters are magnitude

class openquake.hazardlib.gsim.boore_1997.BooreEtAl1997ArbitraryHorizontal

Returns the ground motion values for the arbitrary horizontal component, rather than the geometric mean. This version includes the corrected intra-event terms, as defined in an erratum to the original paper: Boore, DM (2005). “Erratum: Equations for Estimating Horizontal Response Spectra and Peak Acceleration from Western North American Earthquakes: A Summary of Recent Work.” Seismological Research Letters, 76(3), 368-369

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Horizontal'

Supported intensity measure component is the arbitrary horizontal

class openquake.hazardlib.gsim.boore_1997.BooreEtAl1997ArbitraryHorizontalUnspecified

As for the :class:’BooreEtAl1997Arbitrary’, here defined for the case when the style of faulting is not specified

REQUIRES_RUPTURE_PARAMETERS = set(['mag'])

Required rupture parameters are magnitude