Allen, Wald & Worden 2012 (MMI)

class openquake.hazardlib.gsim.allen_2012_ipe.AllenEtAl2012

Implements the Intensity Prediction Equation of Allen, Wald and Worden (2012) for Modified Mercalli Intensity in Active Crustal Regions Allen, T. I., Wald, D. J. and Worden, C. B. (2012) Intensity attenuation in active crustal regions, J. Seismology, 16: 409 - 433

This class implements the version using rupture distance, neglecting site amplification

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Average horizontal'

Supported intensity measure component is not considered for IPEs, so we assume equivalent to ‘average horizontal’

DEFINED_FOR_INTENSITY_MEASURE_TYPES = set([<class 'openquake.hazardlib.imt.MMI'>])

Supported intensity measure types are peak ground acceleration and peak ground velocity

DEFINED_FOR_STANDARD_DEVIATION_TYPES = set(['Total'])

Supported standard deviation types is total.

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Active Shallow Crust'

The GMPE is derived from induced earthquakes

REQUIRES_DISTANCES = set(['rrup'])

Required distance measure is rupture distance

REQUIRES_RUPTURE_PARAMETERS = set(['mag'])

Required rupture parameters are magnitude (ML is used)

REQUIRES_SITES_PARAMETERS = set([])

No required site parameters (in the present version)

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

See superclass method for spec of input and result values.

class openquake.hazardlib.gsim.allen_2012_ipe.AllenEtAl2012Rhypo

Version of the Allen, Wald and Worden (2012) IPE for hypocentral distance

REQUIRES_DISTANCES = set(['rhypo'])

Required distance measure is hypocentral distance

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

See superclass method for spec of input and result values.