Garcia et al. 2005

class openquake.hazardlib.gsim.garcia_2005.GarciaEtAl2005SSlab

Implements GMPE developed by Garcia, D., Singh, S. K., Harraiz, M, Ordaz, M., and Pacheco, J. F. and published in BSSA as:

“Inslab earthquakes of Central Mexico: Peak ground-motion parameters and response spectra”, vol. 95, No. 6, pp. 2272-2282.”

The original formulation predict peak ground acceleration (PGA), in cm/s*s, peak ground velocity PGV (cm/s) and 5% damped pseudo-acceleration response spectra (PSA) in cm/s*s for the geometric average of the maximum component of the two horizontal component of ground motion (see last paragraph of Summary in pag. 2272

The GMPE predicted values for Mexican inslab events and NEHRP B site condition

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

Equation coefficients for geometric average of the maximum of the two horizontal components, as described in Table 2 on pp. 2275, but generated from a Fortran implementation code provided by Daniel Garcia (higher precision than in the paper). The original IMT values are defined as frequencies values.

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Average horizontal'

Supported intensity measure component is the geometric average of openquake.hazardlib.const.IMC.AVERAGE_HORIZONTAL, see Data processing in page 2274.

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

Supported intensity measure types are spectral acceleration, and peak ground acceleration. See Table 2 in page 1865

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

Supported standard deviation types are inter-event, intra-event and total See Tables 2 and 3, page 2275.

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Subduction IntraSlab'

Supported tectonic region type is subduction intraslab, given that the equations have been derived using Mexican inslab events

REQUIRES_DISTANCES = set(['rhypo', 'rrup'])

Required distance measure is Rrup (closest distance to fault surface for the larger events, Mw > 6.5) or Rhypo (hypocentral distance for the rest (both in kilometers) as explained in page 2274

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

Required rupture parameters are magnitude and focal depth See equation (1) in pag 2274

REQUIRES_SITES_PARAMETERS = set(['vs30'])

No site parameters required All data from 51 hard (NEHRP B) sites.

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

See superclass method for spec of input and result values.

class openquake.hazardlib.gsim.garcia_2005.GarciaEtAl2005SSlabVert

Extend GarciaEtAl2005SSlab

Implements GMPE developed by Garcia, D., Singh, S. K., Harraiz, M, Ordaz, M., and Pacheco, J. F. and published in BSSA as:

“Inslab earthquakes of Central Mexico: Peak ground-motion parameters and r esponse spectra”, vol. 95, No. 6, pp. 2272-2282.”

The original formulation predict peak ground acceleration (PGA), in cm/s*s, peak ground velocity PGV (cm/s) and 5% damped pseudo-acceleration response spectra (PSA) in cm/s*s for the vertical component of ground motion (see last paragraph of Summary in pag. 2272

The GMPE predicted values for Mexican inslab events and NEHRP B site

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

Equation coefficients for Vertical Component, as described in Table 3 on pp 2275. The original imt values are defined as frequencies values