Akkar et al. 2014

class openquake.hazardlib.gsim.akkar_2014.AkkarEtAlRjb2014

Implements GMPE developed by S. Akkar, M. A. Sandikkaya, and J. J. Bommer as published in “Empirical Ground-Motion Models for Point- and Extended- Source Crustal Earthquake Scenarios in Europe and the Middle East”, Bulletin of Earthquake Engineering (2014), 12(1): 359 - 387 The class implements the equations for Joyner-Boore distance and based on manuscript provided by the original authors.

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

Coefficient table (from Table 3 and 4a, page 22) Table 4.a: Period-dependent regression coefficients of the RJB ground-motion model sigma is the ‘intra-event’ standard deviation, while tau is the ‘inter-event’ standard deviation

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Average horizontal'

The supported intensity measure component is ‘average horizontal’, see section ‘A New Generation of European Ground-Motion Models’, page 8

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

The supported intensity measure types are PGA, PGV, and SA, see table 4.a, pages 22-23

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

The supported standard deviations are total, inter and intra event, see table 4.a, pages 22-23

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Active Shallow Crust'

The supported tectonic region type is active shallow crust because the equations have been developed for “all seismically- active regions bordering the Mediterranean Sea and extending to the Middle East”, see section ‘A New Generation of European Ground-Motion Models’, page 4.

REQUIRES_DISTANCES = set(['rjb'])

The required distance parameter is ‘Joyner-Boore’ distance, because coefficients in table 4.a, pages 22-23, are used.

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

The required rupture parameters are rake and magnitude, see equation 1, page 20.

REQUIRES_SITES_PARAMETERS = set(['vs30'])

The required site parameter is vs30, see equation 1, page 20.

c1 = 6.75

c1 is the reference magnitude, fixed to 6.75Mw (which happens to be the same value used in Boore and Atkinson, 2008) see paragraph ‘Functional Form of Predictive Equations and Regressions’, page 21

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

See superclass method for spec of input and result values.

Implement equation 1, page 20.

class openquake.hazardlib.gsim.akkar_2014.AkkarEtAlRepi2014

Implements GMPE developed by S. Akkar, M. A. Sandikkaya, and J. J. Bommer as published in “Empirical Ground-Motion Models for Point- and Extended- Source Crustal Earthquake Scenarios in Europe and the Middle East”, Bullettin of Earthquake Engineering (2014).

The class implements the equations for epicentral distance and based on manuscript provided by the original authors.

class openquake.hazardlib.gsim.akkar_2014.AkkarEtAlRhyp2014

Implements GMPE developed by S. Akkar, M. A. Sandikkaya, and J. J. Bommer as published in “Empirical Ground-Motion Models for Point- and Extended- Source Crustal Earthquake Scenarios in Europe and the Middle East”, Bullettin of Earthquake Engineering (2014).

The class implements the equations for hypocentral distance and based on manuscript provided by the original authors.