McVerry et al. 2006

class openquake.hazardlib.gsim.mcverry_2006.McVerry2006Asc

Implements GMPE developed by G. McVerry, J. Zhao, N.A. Abrahamson, P. Somerville published as “New Zealand Acceleration Response Spectrum Attenuation Relations for Crustal and Subduction Zone Earthquakes”, Bulletin of the New Zealand Society for Earthquake Engineering, v.39, no. 1, p. 1-58, March 2006.

URL: http://www.nzsee.org.nz/db/Bulletin/Archive/39(1)0001.pdf Last accessed 10 September 2014.

This class implements the GMPE for Active Shallow Crust earthquakes (Asc suffix).

The GMPE distinguishes between rock (vs30 >= 760) and stiff soil (360 <= vs30 < 760) and soft soil (vs < 360) which equates to the New Zealand site class A and B (rock) and C,D and E (soil). The rake angle is also taken into account to distinguish between faulting mechanisms. A hanging-wall term is noted in the functional form of the model in the paper but is not used at present. Furthermore, a Rvolc (volcanic path distance) is noted in the functional form but this is not implemented in the McVerry2006Asc model, it is implemented in a seperate GMPE McVerry2006Volc where Rvol=Rrup as this is how it is implemented in the NZ Seismic Hazard Model (Stirling 2012)

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

Coefficient table (table 3, page 108)

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

Coefficient table for standard deviation calculation (table 4, page 109)

DEFINED_FOR_INTENSITY_MEASURE_COMPONENT = 'Greater of two horizontal'

Supported intensity measure component is the stronger of two horizontal components (see Section 6 paragraph 2, page 21)

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

Supported intensity measure types are PGA and SA. PGA is assumed to have same coefficients as SA(0.00)

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

Supported standard deviation types are Inter, Intra and Total

DEFINED_FOR_TECTONIC_REGION_TYPE = 'Active Shallow Crust'

Supported tectonic region type for base class is ‘active shallow crust’

REQUIRES_DISTANCES = set(['rrup'])

Required distance measure is RRup (paragraphy 3, page 26) which is

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

Required rupture parameters are magnitude, and rake and hypocentral

REQUIRES_SITES_PARAMETERS = set(['vs30'])

The only site parameter is vs30 used to map to site class to distinguish

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

See superclass method for spec of input and result values.

class openquake.hazardlib.gsim.mcverry_2006.McVerry2006SInter

Extend McVerry2006Asc for Subduction Interface events (SInter)

Implements GMPE developed by G. McVerry, J. Zhao, N.A. Abrahamson, P. Somerville published as “New Zealand Acceleration Response Spectrum Attenuation Relations for Crustal and Subduction Zone Earthquakes”, Bulletin of the New Zealand Society for Earthquake Engineering, v.39, no. 1, p. 1-58, March 2006.

URL: http://www.nzsee.org.nz/db/Bulletin/Archive/39(1)0001.pdf Last accessed 10 September 2014.

This class implements the GMPE for Subduction Interface earthquakes (SInter suffix).

The GMPE distinguishes between rock (vs30 >= 760) and deep soil (vs30 < 760) which equation to the New Zealand site class A and B (rock) and C,D and E (soil). The rake angle is also taken into account to distinguish between faulting mechanisms. A hanging-wall term is noted in the functional form of the model in the paper but is not used at present.

class openquake.hazardlib.gsim.mcverry_2006.McVerry2006SSlab

Extend McVerry2006Asc for Subduction Intraslab events (SSlab)

Implements GMPE developed by G. McVerry, J. Zhao, N.A. Abrahamson, P. Somerville published as “New Zealand Acceleration Response Spectrum Attenuation Relations for Crustal and Subduction Zone Earthquakes”, Bulletin of the New Zealand Society for Earthquake Engineering, v.39, no. 1, p. 1-58, March 2006.

URL: http://www.nzsee.org.nz/db/Bulletin/Archive/39(1)0001.pdf Last accessed 10 September 2014.

This class implements the GMPE for Subduction Intraslab earthquakes (SSlab suffix).

The GMPE distinguishes between rock (vs30 >= 760) and deep soil (vs30 < 760) which equation to the New Zealand site class A and B (rock) and C,D and E (soil). The rake angle is also taken into account to distinguish between faulting mechanisms. A hanging-wall term is noted in the functional form of the model in the paper but is not used at present.

class openquake.hazardlib.gsim.mcverry_2006.McVerry2006Volc

Extend McVerry2006Asc for earthquakes with Volcanic paths (Volc)

Implements GMPE developed by G. McVerry, J. Zhao, N.A. Abrahamson, P. Somerville published as “New Zealand Acceleration Response Spectrum Attenuation Relations for Crustal and Subduction Zone Earthquakes”, Bulletin of the New Zealand Society for Earthquake Engineering, v.39, no. 1, p. 1-58, March 2006.

URL: http://www.nzsee.org.nz/db/Bulletin/Archive/39(1)0001.pdf Last accessed 10 September 2014.

This class implements the GMPE for earthquakes with Volcanic paths

The GMPE distinguishes between rock (vs30 >= 760) and deep soil (vs30 < 760) which equation to the New Zealand site class A and B (rock) and C,D and E (soil). The rake angle is also taken into account to distinguish between faulting mechanisms. A hanging-wall term is noted in the functional form of the model in the paper but is not used at present.

rvolc is equal to rrup