Atkinson and Boore 1995

class openquake.hazardlib.gsim.atkinson_boore_1995.AtkinsonBoore1995GSCBest

Implement equation used by the Geological Survey of Canada (GSC) for the 2010 Eastern Canada National Seismic Hazard Model. The equation fits the table values defined by Gail M. Atkinson and David M. Boore in “Ground-Motion Relations for Eastern North America”, Bullettin of the Seismological Society of America, Vol. 85, No. 1, pp. 17-30, February 1995. Table of coefficients were provided by GSC and are associated to the ‘Best’ case (that is mean value unaffected).

The class assumes magnitude to be in Mblg scale. The Atkinson 1993 conversion equation is used to obtain Mw values.

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

coefficient table provided by GSC

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Random horizontal'

Supported intensity measure component is random horizontal RANDOM_HORIZONTAL, see page 22 in Atkinson and Boore’s manuscript

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

Supported intensity measure types are spectral acceleration, and peak ground acceleration

DEFINED_FOR_STANDARD_DEVIATION_TYPES = set(['Total'])

Supported standard deviation type is total

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Stable Shallow Crust'

Supported tectonic region type is stable continental, given that the equations have been derived for Eastern North America

REQUIRES_DISTANCES = set(['rhypo'])

Required distance measure is hypocentral distance see page 18 in Atkinson and Boore’s manuscript

REQUIRES_RUPTURE_PARAMETERS = set(['mag'])

Required rupture parameter is magnitude

REQUIRES_SITES_PARAMETERS = set([])

site params are not required

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

See superclass method for spec of input and result values.

class openquake.hazardlib.gsim.atkinson_boore_1995.AtkinsonBoore1995GSCUpperLimit

Implement equation used by the Geological Survey of Canada (GSC) for the 2010 Eastern Canada National Seismic Hazard Model. The equation fits the table values defined by Gail M. Atkinson and David M. Boore in “Ground-Motion Relations for Eastern North America”, Bullettin of the Seismological Society of America, Vol. 85, No. 1, pp. 17-30, February 1995. Table of coefficients were provided by GSC and are associated to the ‘Upper Limit’ case (that is mean value increased).

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

coefficient table provided by GSC

class openquake.hazardlib.gsim.atkinson_boore_1995.AtkinsonBoore1995GSCLowerLimit

Implement equation used by the Geological Survey of Canada (GSC) for the 2010 Eastern Canada National Seismic Hazard Model. The equation fits the table values defined by Gail M. Atkinson and David M. Boore in “Ground-Motion Relations for Eastern North America”, Bullettin of the Seismological Society of America, Vol. 85, No. 1, pp. 17-30, February 1995. Table of coefficients were provided by GSC and are associated to the ‘Lower Limit’ case (that is mean value decreased).

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

coefficient table provided by GSC