def test_area_with_tgr_mfd(self):
trunc_mfd = mfd.TruncatedGRMFD(a_val=2.1,
b_val=4.2,
bin_width=0.1,
min_mag=6.55,
max_mag=8.91)
np1 = geo.NodalPlane(strike=0.0, dip=90.0, rake=0.0)
np2 = geo.NodalPlane(strike=90.0, dip=45.0, rake=90.0)
npd = pmf.PMF([(0.3, np1), (0.7, np2)])
hd = pmf.PMF([(0.5, 4.0), (0.5, 8.0)])
polygon = geo.Polygon([
geo.Point(-122.5, 37.5),
geo.Point(-121.5, 37.5),
geo.Point(-121.5, 38.5),
geo.Point(-122.5, 38.5)
])
area = source.AreaSource(
source_id="1",
name="source A",
tectonic_region_type="Active Shallow Crust",
mfd=trunc_mfd,
rupture_mesh_spacing=self.rupture_mesh_spacing,
magnitude_scaling_relationship=scalerel.PeerMSR(),
rupture_aspect_ratio=1.0,
upper_seismogenic_depth=0.0,
lower_seismogenic_depth=10.0,
nodal_plane_distribution=npd,
hypocenter_distribution=hd,
polygon=polygon,
area_discretization=10,
temporal_occurrence_model=PoissonTOM(50.))
actual = list(source.area_to_point_sources(area))
self.assertEqual(len(actual), 96) # expected 96 points
self.assertAlmostEqual(actual[0].mfd.a_val, 0.1177287669604317)
def convert_areaSource(self, node):
"""
Convert the given node into an area source object.
:param node: a node with tag areaGeometry
:returns: a :class:`openquake.hazardlib.source.AreaSource` instance
"""
geom = node.areaGeometry
coords = split_coords_2d(~geom.Polygon.exterior.LinearRing.posList)
polygon = geo.Polygon([geo.Point(*xy) for xy in coords])
msr = valid.SCALEREL[~node.magScaleRel]()
area_discretization = geom.attrib.get('discretization',
self.area_source_discretization)
if area_discretization is None:
raise ValueError(
'The source %r has no `discretization` parameter and the job.'
'ini file has no `area_source_discretization` parameter either'
% node['id'])
return source.AreaSource(
source_id=node['id'],
name=node['name'],
tectonic_region_type=node.attrib.get('tectonicRegion'),
mfd=self.convert_mfdist(node),
rupture_mesh_spacing=self.rupture_mesh_spacing,
magnitude_scaling_relationship=msr,
rupture_aspect_ratio=~node.ruptAspectRatio,
upper_seismogenic_depth=~geom.upperSeismoDepth,
lower_seismogenic_depth=~geom.lowerSeismoDepth,
nodal_plane_distribution=self.convert_npdist(node),
hypocenter_distribution=self.convert_hddist(node),
polygon=polygon,
area_discretization=area_discretization,
temporal_occurrence_model=self.get_tom(node))
def _expected_area(self):
incr_mfd = mfd.EvenlyDiscretizedMFD(
min_mag=6.55, bin_width=0.1,
occurrence_rates=[
0.0010614989, 8.8291627E-4, 7.3437777E-4, 6.108288E-4,
5.080653E-4])
np1 = geo.NodalPlane(strike=0.0, dip=90.0, rake=0.0)
np2 = geo.NodalPlane(strike=90.0, dip=45.0, rake=90.0)
npd = pmf.PMF([(0.3, np1), (0.7, np2)])
hd = pmf.PMF([(0.5, 4.0), (0.5, 8.0)])
polygon = geo.Polygon(
[geo.Point(-122.5, 37.5), geo.Point(-121.5, 37.5),
geo.Point(-121.5, 38.5), geo.Point(-122.5, 38.5)])
area = source.AreaSource(
source_id="1",
name="Quito",
tectonic_region_type="Active Shallow Crust",
mfd=incr_mfd,
rupture_mesh_spacing=self.rupture_mesh_spacing,
magnitude_scaling_relationship=scalerel.PeerMSR(),
rupture_aspect_ratio=1.5,
upper_seismogenic_depth=0.0,
lower_seismogenic_depth=10.0,
nodal_plane_distribution=npd,
hypocenter_distribution=hd,
polygon=polygon,
area_discretization=2,
temporal_occurrence_model=PoissonTOM(50.))
area.num_ruptures = area.count_ruptures()
return area
def test_area_with_incr_mfd(self):
incr_mfd = mfd.EvenlyDiscretizedMFD(
min_mag=6.55, bin_width=0.1,
occurrence_rates=[
0.0010614989, 8.8291627E-4, 7.3437777E-4, 6.108288E-4,
5.080653E-4])
np1 = geo.NodalPlane(strike=0.0, dip=90.0, rake=0.0)
np2 = geo.NodalPlane(strike=90.0, dip=45.0, rake=90.0)
npd = pmf.PMF([(0.3, np1), (0.7, np2)])
hd = pmf.PMF([(0.5, 4.0), (0.5, 8.0)])
polygon = geo.Polygon(
[geo.Point(-122.5, 37.5), geo.Point(-121.5, 37.5),
geo.Point(-121.5, 38.5), geo.Point(-122.5, 38.5)])
area = source.AreaSource(
source_id="1",
name="source A",
tectonic_region_type="Active Shallow Crust",
mfd=incr_mfd,
rupture_mesh_spacing=self.rupture_mesh_spacing,
magnitude_scaling_relationship=scalerel.PeerMSR(),
rupture_aspect_ratio=1.0,
upper_seismogenic_depth=0.0,
lower_seismogenic_depth=10.0,
nodal_plane_distribution=npd,
hypocenter_distribution=hd,
polygon=polygon,
area_discretization=10,
temporal_occurrence_model=PoissonTOM(50.0),
)
actual = list(area)
self.assertEqual(len(actual), 96) # expected 96 points
assert_allclose(
actual[0].mfd.occurrence_rates,
[1.10572802083e-05, 9.197044479166666e-06, 7.6497684375e-06,
6.3627999999999995e-06, 5.292346875e-06])
def _area_to_hazardlib(src, mesh_spacing, bin_width, area_src_disc):
"""Convert a NRML area source to the HazardLib equivalent.
See :mod:`openquake.nrmllib.models` and :mod:`openquake.hazardlib.source`.
:param src:
:class:`openquake.nrmllib.models.PointSource` instance.
:param float mesh_spacing:
Rupture mesh spacing, in km.
:param float bin_width:
Truncated Gutenberg-Richter MFD (Magnitude Frequency Distribution) bin
width.
:param float area_src_disc:
Area source discretization, in km. Applies only to area sources.
:returns:
The HazardLib representation of the input source.
"""
shapely_polygon = wkt.loads(src.geometry.wkt)
hazardlib_polygon = geo.Polygon(
# We ignore the last coordinate in the sequence here, since it is a
# duplicate of the first. hazardlib will close the loop for us.
[geo.Point(*x) for x in list(shapely_polygon.exterior.coords)[:-1]])
mf_dist = _mfd_to_hazardlib(src.mfd, bin_width)
# nodal plane distribution:
npd = pmf.PMF([(x.probability,
geo.NodalPlane(strike=x.strike, dip=x.dip, rake=x.rake))
for x in src.nodal_plane_dist])
# hypocentral depth distribution:
hd = pmf.PMF([(x.probability, x.depth) for x in src.hypo_depth_dist])
msr = scalerel.get_available_magnitude_scalerel()[src.mag_scale_rel]()
area = source.AreaSource(
source_id=src.id,
name=src.name,
tectonic_region_type=src.trt,
mfd=mf_dist,
rupture_mesh_spacing=mesh_spacing,
magnitude_scaling_relationship=msr,
rupture_aspect_ratio=src.rupt_aspect_ratio,
upper_seismogenic_depth=src.geometry.upper_seismo_depth,
lower_seismogenic_depth=src.geometry.lower_seismo_depth,
nodal_plane_distribution=npd,
hypocenter_distribution=hd,
polygon=hazardlib_polygon,
area_discretization=area_src_disc)
return area
