def iter_ruptures(self):
"""
See :meth:
`openquake.hazardlib.source.base.BaseSeismicSource.iter_ruptures`.
Uses :func:`_float_ruptures` for finding possible rupture locations
on the whole fault surface.
"""
whole_fault_surface = ComplexFaultSurface.from_fault_data(
self.edges, self.rupture_mesh_spacing)
whole_fault_mesh = whole_fault_surface.mesh
cell_center, cell_length, cell_width, cell_area = (
whole_fault_mesh.get_cell_dimensions())
for mag, mag_occ_rate in self.get_annual_occurrence_rates():
rupture_area = self.magnitude_scaling_relationship.get_median_area(
mag, self.rake)
rupture_length = numpy.sqrt(
rupture_area * self.rupture_aspect_ratio)
rupture_slices = _float_ruptures(
rupture_area, rupture_length, cell_area, cell_length)
occurrence_rate = mag_occ_rate / float(len(rupture_slices))
for rupture_slice in rupture_slices[self.start:self.stop]:
mesh = whole_fault_mesh[rupture_slice]
# XXX: use surface centroid as rupture's hypocenter
# XXX: instead of point with middle index
hypocenter = mesh.get_middle_point()
try:
surface = ComplexFaultSurface(mesh)
except ValueError as e:
raise ValueError("Invalid source with id=%s. %s" % (
self.source_id, str(e)))
yield ParametricProbabilisticRupture(
mag, self.rake, self.tectonic_region_type, hypocenter,
surface, occurrence_rate, self.temporal_occurrence_model)
def modify_set_geometry(self, edges, spacing):
"""
Modifies the complex fault geometry
"""
ComplexFaultSurface.check_fault_data(edges, spacing)
self.edges = edges
self.rupture_mesh_spacing = spacing
def __init__(
self,
source_id,
name,
tectonic_region_type,
mfd,
rupture_mesh_spacing,
magnitude_scaling_relationship,
rupture_aspect_ratio,
temporal_occurrence_model,
# complex fault specific parameters
edges,
rake,
):
super(ComplexFaultSource, self).__init__(
source_id,
name,
tectonic_region_type,
mfd,
rupture_mesh_spacing,
magnitude_scaling_relationship,
rupture_aspect_ratio,
temporal_occurrence_model,
)
NodalPlane.check_rake(rake)
ComplexFaultSurface.check_fault_data(edges, rupture_mesh_spacing)
self.edges = edges
self.rake = rake
def modify_set_geometry(self, edges, spacing):
"""
Modifies the complex fault geometry
"""
ComplexFaultSurface.check_fault_data(edges, spacing)
self.edges = edges
self.rupture_mesh_spacing = spacing
def test_mesh_spacing_more_than_two_widthss(self):
edge1 = Line([Point(0, 0, 0), Point(0, 0.2, 0)])
edge2 = Line([Point(0, 0, 10), Point(0, 0.2, 20)])
with self.assertRaises(ValueError) as ar:
ComplexFaultSurface.from_fault_data([edge1, edge2],
mesh_spacing=30.1)
self.assertEqual(
str(ar.exception),
'mesh spacing 30.1 km is too big for mean width 15.0 km')
def test_mesh_spacing_more_than_two_widthss(self):
edge1 = Line([Point(0, 0, 0), Point(0, 0.2, 0)])
edge2 = Line([Point(0, 0, 10), Point(0, 0.2, 20)])
with self.assertRaises(ValueError) as ar:
ComplexFaultSurface.from_fault_data([edge1, edge2],
mesh_spacing=30.1)
self.assertEqual(
str(ar.exception),
'mesh spacing 30.1 km is too big for mean width 15.0 km'
)
def test_invalid_surface_polygon_topo(self):
# intermediate edge has opposite strike than top and bottom
edges = [
Line([Point(0, 0, -5), Point(0, 2, -5)]),
Line([Point(0, 2, 5), Point(0, 0, 5)])
]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=1)
self.assertEqual('Edges points are not in the right order',
str(cm.exception))
def test_invalid_surface_polygon_case2(self):
# inclined complex fault with top and bottom edges inverted
edges = [
Line([Point(0, 0), Point(0, 2)]),
Line([Point(0.2, 2, 10), Point(0.6, 0, 10)])
]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=10)
self.assertEqual('Edges points are not in the right order',
str(cm.exception))
def test_invalid_surface_polygon_case2(self):
# inclined complex fault with top and bottom edges inverted
edges = [Line([Point(0, 0), Point(0, 2)]),
Line([Point(0.2, 2, 10), Point(0.6, 0, 10)])]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=10)
self.assertEqual(
'Edges points are not in the right order',
str(cm.exception)
)
def test_invalid_surface_polygon_topo(self):
# intermediate edge has opposite strike than top and bottom
edges = [Line([Point(0, 0, -5), Point(0, 2, -5)]),
Line([Point(0, 2, 5), Point(0, 0, 5)])]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=1)
self.assertEqual(
'Edges points are not in the right order',
str(cm.exception)
)
def test_dip_left_of_fault_strike_topo(self):
# when the fault is above sea level
edges = [
Line([Point(0, 1, -1), Point(0, 0, -1)]),
Line([Point(1, 1, 0), Point(1, 0, 0)])
]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=1)
self.assertEqual(
'Surface does not conform with Aki & Richards convention',
str(cm.exception))
def __init__(self, source_id, name, tectonic_region_type, mfd,
rupture_mesh_spacing, magnitude_scaling_relationship,
rupture_aspect_ratio, temporal_occurrence_model,
# complex fault specific parameters
edges, rake):
super().__init__(
source_id, name, tectonic_region_type, mfd, rupture_mesh_spacing,
magnitude_scaling_relationship, rupture_aspect_ratio,
temporal_occurrence_model)
NodalPlane.check_rake(rake)
ComplexFaultSurface.check_fault_data(edges, rupture_mesh_spacing)
self.edges = edges
self.rake = rake
def test_dip_left_of_fault_strike_case1(self):
# checks that an error is raised when fault surface dips left of
# fault strike (i.e. does not obey to Aki & Richards convention)
# simple case of planar surface with strike 0 (pointing towards
# north) but with surface dipping to the west
edges = [Line([Point(0, 0), Point(0, 1)]),
Line([Point(-1, 0, 10), Point(-1, 1, 10)])]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=10)
self.assertEqual(
'Surface does not conform with Aki & Richards convention',
str(cm.exception)
)
def test_dip_left_of_fault_strike_case1(self):
# checks that an error is raised when fault surface dips left of
# fault strike (i.e. does not obey to Aki & Richards convention)
# simple case of planar surface with strike 0 (pointing towards
# north) but with surface dipping to the west
edges = [Line([Point(0, 0), Point(0, 1)]),
Line([Point(-1, 0, 10), Point(-1, 1, 10)])]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=10)
self.assertEqual(
'Surface does not conform with Aki & Richards convention',
str(cm.exception)
)
def test_2(self):
# this is a regression test. Reference values have been obtained
# by extracting mesh from complex surface.
edge1 = Line([Point(0, 0, 1), Point(0, 0.02, 1)])
edge2 = Line([Point(0.02, 0, 1.5), Point(0.02, 0.01, 1.5)])
edge3 = Line([Point(0, 0, 2), Point(0, 0.02, 2)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2, edge3],
mesh_spacing=1)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(0.0, 0.0, 1.0),
(0.0, 0.01, 1.0),
(0.0, 0.02, 1.0)],
[(0.008, 0.0, 1.2),
(0.008, 0.008, 1.2),
(0.008, 0.016, 1.2)],
[(0.016, 0.0, 1.4),
(0.016, 0.006, 1.4),
(0.016, 0.012, 1.4)],
[(0.016, 0.0, 1.6),
(0.016, 0.006, 1.6),
(0.016, 0.012, 1.6)],
[(0.008, 0, 1.8),
(0.008, 0.008, 1.8),
(0.008, 0.016, 1.8)],
[(0.0, 0.0, 2.0),
(0.0, 0.01, 2.0),
(0.0, 0.02, 2.0)],
])
def test_2(self):
edge1 = Line([Point(0, 0, 1), Point(0, 0.02, 1)])
edge2 = Line([Point(0.02, 0, 0.5), Point(0.02, 0.01, 0.5)])
edge3 = Line([Point(0, 0, 2), Point(0, 0.02, 2)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2, edge3],
mesh_spacing=1)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(0.00000000e+00, 0.00000000e+00, 1.00000000e+00),
(0.00000000e+00, 1.00000000e-02, 1.00000000e+00),
(0.00000000e+00, 2.00000000e-02, 1.00000000e+00)],
[(8.70732572e-03, 5.33152318e-19, 7.82316857e-01),
(8.67044753e-03, 7.83238825e-03, 7.83238813e-01),
(8.57984833e-03, 1.57100762e-02, 7.85503798e-01)],
[(1.74146514e-02, 1.06630462e-18, 5.64633714e-01),
(1.73408950e-02, 5.66477632e-03, 5.66477626e-01),
(1.71596963e-02, 1.14201520e-02, 5.71007595e-01)],
[(1.47979150e-02, 3.18525318e-19, 8.90156376e-01),
(1.48515919e-02, 6.28710212e-03, 8.86130608e-01),
(1.49871315e-02, 1.25064345e-02, 8.75965152e-01)],
[(7.39895749e-03, 7.71565830e-19, 1.44507819e+00),
(7.42579599e-03, 8.14355113e-03, 1.44306530e+00),
(7.49356586e-03, 1.62532174e-02, 1.43798258e+00)],
[(0.00000000e+00, 0.00000000e+00, 2.00000000e+00),
(0.00000000e+00, 1.00000000e-02, 2.00000000e+00),
(0.00000000e+00, 2.00000000e-02, 2.00000000e+00)],
])
def test_2(self):
edge1 = Line([Point(0, 0, 1), Point(0, 0.02, 1)])
edge2 = Line([Point(0.02, 0, 0.5), Point(0.02, 0.01, 0.5)])
edge3 = Line([Point(0, 0, 2), Point(0, 0.02, 2)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2, edge3],
mesh_spacing=1)
self.assert_mesh_is(
surface=surface,
expected_mesh=[
[(0.00000000e+00, 0.00000000e+00, 1.00000000e+00),
(0.00000000e+00, 1.00000000e-02, 1.00000000e+00),
(0.00000000e+00, 2.00000000e-02, 1.00000000e+00)],
[(8.70732572e-03, 5.33152318e-19, 7.82316857e-01),
(8.67044753e-03, 7.83238825e-03, 7.83238813e-01),
(8.57984833e-03, 1.57100762e-02, 7.85503798e-01)],
[(1.74146514e-02, 1.06630462e-18, 5.64633714e-01),
(1.73408950e-02, 5.66477632e-03, 5.66477626e-01),
(1.71596963e-02, 1.14201520e-02, 5.71007595e-01)],
[(1.47979150e-02, 3.18525318e-19, 8.90156376e-01),
(1.48515919e-02, 6.28710212e-03, 8.86130608e-01),
(1.49871315e-02, 1.25064345e-02, 8.75965152e-01)],
[(7.39895749e-03, 7.71565830e-19, 1.44507819e+00),
(7.42579599e-03, 8.14355113e-03, 1.44306530e+00),
(7.49356586e-03, 1.62532174e-02, 1.43798258e+00)],
[(0.00000000e+00, 0.00000000e+00, 2.00000000e+00),
(0.00000000e+00, 1.00000000e-02, 2.00000000e+00),
(0.00000000e+00, 2.00000000e-02, 2.00000000e+00)],
])
def test_2(self):
# this is a regression test. Reference values have been obtained
# by extracting mesh from complex surface.
edge1 = Line([Point(0, 0, 1), Point(0, 0.02, 1)])
edge2 = Line([Point(0.02, 0, 1.5), Point(0.02, 0.01, 1.5)])
edge3 = Line([Point(0, 0, 2), Point(0, 0.02, 2)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2, edge3],
mesh_spacing=1)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(0.0, 0.0, 1.0),
(0.0, 0.01, 1.0),
(0.0, 0.02, 1.0)],
[(0.008, 0.0, 1.2),
(0.008, 0.008, 1.2),
(0.008, 0.016, 1.2)],
[(0.016, 0.0, 1.4),
(0.016, 0.006, 1.4),
(0.016, 0.012, 1.4)],
[(0.016, 0.0, 1.6),
(0.016, 0.006, 1.6),
(0.016, 0.012, 1.6)],
[(0.008, 0, 1.8),
(0.008, 0.008, 1.8),
(0.008, 0.016, 1.8)],
[(0.0, 0.0, 2.0),
(0.0, 0.01, 2.0),
(0.0, 0.02, 2.0)],
])
def test(self):
edges = [Line([Point(-3.4, 5.5, 0), Point(-3.9, 5.3, 0)]),
Line([Point(-2.4, 4.6, 10), Point(-3.6, 4.9, 20)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [-2.4, -3.6, -3.9, -3.4]
elats = [4.6, 4.9, 5.3, 5.5]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test(self):
edges = [Line([Point(-3.4, 5.5, 0), Point(-3.9, 5.3, 0)]),
Line([Point(-2.4, 4.6, 10), Point(-3.6, 4.9, 20)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [-2.4, -3.6, -3.9, -3.4]
elats = [4.6, 4.9, 5.3, 5.5]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_surface_with_variable_width(self):
edges = [Line([Point(0.1, 0.1, 0),
Point(0.459729190252, 0.0999980290582, 0.0),
Point(0.819458380482, 0.0999960581553, 0.0)]),
Line([Point(0.1, 0.1, 20.0),
Point(0.459729190252, 0.0999980290582, 20.0),
Point(0.819458380482, 0.0999960581553, 43.0940107676)])]
surface = ComplexFaultSurface.from_fault_data(edges, mesh_spacing=5.0)
self.assertAlmostEqual(surface.get_width(), 26.0, places=0)
def test_surface_with_variable_width(self):
edges = [Line([Point(0.1, 0.1, 0),
Point(0.459729190252, 0.0999980290582, 0.0),
Point(0.819458380482, 0.0999960581553, 0.0)]),
Line([Point(0.1, 0.1, 20.0),
Point(0.459729190252, 0.0999980290582, 20.0),
Point(0.819458380482, 0.0999960581553, 43.0940107676)])]
surface = ComplexFaultSurface.from_fault_data(edges, mesh_spacing=5.0)
self.assertAlmostEqual(surface.get_width(), 26.0, places=0)
def test_surface_crossing_international_date_line(self):
edge1 = Line([Point(179.95, 0., 0.), Point(-179.95, 0., 0.)])
edge2 = Line([Point(179.95, 0., 10.), Point(-179.95, 0., 10.)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2],
mesh_spacing=10.)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(179.95, 0., 0.), (-179.95, 0., 0.)],
[(179.95, 0., 10.), (-179.95, 0., 10.)]
])
def test_surface_crossing_international_date_line(self):
edge1 = Line([Point(179.95, 0., 0.), Point(-179.95, 0., 0.)])
edge2 = Line([Point(179.95, 0., 10.), Point(-179.95, 0., 10.)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2],
mesh_spacing=10.)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(179.95, 0., 0.), (-179.95, 0., 0.)],
[(179.95, 0., 10.), (-179.95, 0., 10.)]
])
def test_dip_left_of_fault_strike_topo(self):
# when the fault is above sea level
edges = [
Line([
Point(0, 1, -1),
Point(0, 0, -1)
]),
Line([
Point(1, 1, 0),
Point(1, 0, 0)]
)]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=1)
self.assertEqual(
'Surface does not conform with Aki & Richards convention',
str(cm.exception)
)
def test_dip_90_three_points(self):
edges = [Line([Point(1, -20, 30), Point(1, -20.2, 30),
Point(2, -19.7, 30)]),
Line([Point(1, -20, 50), Point(1, -20.2, 50),
Point(2, -19.7, 50)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [1, 1, 2]
elats = [-20.2, -20., -19.7]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_dip_90_two_points(self):
edges = [Line([Point(2, 2, 10), Point(1, 1, 10)]),
Line([Point(2, 2, 20), Point(1, 1, 20)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [1.00003181, 0.99996821, 0.99996819, 1.99996819, 2.00003182,
2.00003181]
elats = [0.99996822, 0.99996819, 1.00003178, 2.0000318, 2.0000318,
1.9999682]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_dip_90_self_intersection(self):
edges = [Line([Point(1, -2, 10), Point(2, -1.9, 10),
Point(3, -2.1, 10), Point(4, -2, 10)]),
Line([Point(1, -2, 20), Point(2, -1.9, 20),
Point(3, -2.1, 20), Point(4, -2, 20)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [3., 1., 2., 4.]
elats = [-2.1, -2., -1.9, -2.]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_edges_with_nonuniform_length(self):
edges = [Line([Point(1, -20, 30), Point(1, -20.2, 30),
Point(2, -19.7, 30), Point(3, -19.5, 30)]),
Line([Point(1, -20, 50), Point(1, -20.2, 50),
Point(2, -19.7, 50)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [1, 1, 2, 3]
elats = [-20.2, -20., -19.7, -19.5]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_dip_90_three_points(self):
edges = [Line([Point(1, -20, 30), Point(1, -20.2, 30),
Point(2, -19.7, 30)]),
Line([Point(1, -20, 50), Point(1, -20.2, 50),
Point(2, -19.7, 50)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [1, 1, 2]
elats = [-20.2, -20., -19.7]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_dip_90_two_points(self):
edges = [Line([Point(2, 2, 10), Point(1, 1, 10)]),
Line([Point(2, 2, 20), Point(1, 1, 20)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [1.00003181, 0.99996821, 0.99996819, 1.99996819, 2.00003182,
2.00003181]
elats = [0.99996822, 0.99996819, 1.00003178, 2.0000318, 2.0000318,
1.9999682]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_dip_left_of_fault_strike_case2(self):
# real example taken from wrong fault for japan model
# ('Kanto earthquake')
edges = [
Line([
Point(139.268, 35.3649682834, 10.6),
Point(139.579014512, 35.1780000001, 10.6)
]),
Line([
Point(139.541937161, 35.378, 19.5999999911),
Point(139.867999999, 35.2135133354, 19.6000000095)]
)]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=10)
self.assertEqual(
'Surface does not conform with Aki & Richards convention',
str(cm.exception)
)
def test_dip_left_of_fault_strike_case2(self):
# real example taken from wrong fault for japan model
# ('Kanto earthquake')
edges = [
Line([
Point(139.268, 35.3649682834, 10.6),
Point(139.579014512, 35.1780000001, 10.6)
]),
Line([
Point(139.541937161, 35.378, 19.5999999911),
Point(139.867999999, 35.2135133354, 19.6000000095)
])
]
with self.assertRaises(ValueError) as cm:
ComplexFaultSurface.from_fault_data(edges, mesh_spacing=10)
self.assertEqual(
'Surface does not conform with Aki & Richards convention',
str(cm.exception))
def test_dip_90_self_intersection(self):
edges = [Line([Point(1, -2, 10), Point(2, -1.9, 10),
Point(3, -2.1, 10), Point(4, -2, 10)]),
Line([Point(1, -2, 20), Point(2, -1.9, 20),
Point(3, -2.1, 20), Point(4, -2, 20)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [3., 1., 2., 4.]
elats = [-2.1, -2., -1.9, -2.]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def test_edges_with_nonuniform_length(self):
edges = [Line([Point(1, -20, 30), Point(1, -20.2, 30),
Point(2, -19.7, 30), Point(3, -19.5, 30)]),
Line([Point(1, -20, 50), Point(1, -20.2, 50),
Point(2, -19.7, 50)])]
polygon = ComplexFaultSurface.surface_projection_from_fault_data(edges)
elons = [1, 1, 2, 3]
elats = [-20.2, -20., -19.7, -19.5]
numpy.testing.assert_allclose(polygon.lons, elons)
numpy.testing.assert_allclose(polygon.lats, elats)
def get_fault_surface_area(self):
"""
Computes the area covered by the surface of the fault.
:returns:
A float defining the area of the surface of the fault [km^2]
"""
# The mesh spacing is hardcoded to guarantee stability in the values
# computed
sfc = ComplexFaultSurface.from_fault_data(self.edges, 2.0)
return sfc.get_area()
def __init__(self, id, trt, mag=5.0, rake=90.):
hypocenter = Point(17.788328, -77.219496, 7.8125)
lons = numpy.array(
[-78.18106621, -78.18013243, -78.17919864, -78.15399318,
-78.15305962, -78.15212606])
lats = numpy.array(
[15.615, 15.615, 15.615, 15.56553731,
15.56553731, 15.56553731])
surface = ComplexFaultSurface(Mesh(lons, lats, None))
self.rupture = Rupture(mag, rake, trt, hypocenter,
surface, ComplexFaultSource)
self.id = id
def test_1(self):
edge1 = Line([Point(0, 0), Point(0.03, 0)])
edge2 = Line([Point(0, 0, 2.224), Point(0.03, 0, 2.224)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2],
mesh_spacing=1.112)
self.assertIsInstance(surface, ComplexFaultSurface)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(0, 0, 0), (0.01, 0, 0), (0.02, 0, 0), (0.03, 0, 0)],
[(0, 0, 1.112), (0.01, 0, 1.112),
(0.02, 0, 1.112), (0.03, 0, 1.112)],
[(0, 0, 2.224), (0.01, 0, 2.224),
(0.02, 0, 2.224), (0.03, 0, 2.224)],
])
def test_1(self):
edge1 = Line([Point(0, 0), Point(0.03, 0)])
edge2 = Line([Point(0, 0, 2.224), Point(0.03, 0, 2.224)])
surface = ComplexFaultSurface.from_fault_data([edge1, edge2],
mesh_spacing=1.112)
self.assertIsInstance(surface, ComplexFaultSurface)
self.assert_mesh_is(surface=surface, expected_mesh=[
[(0, 0, 0), (0.01, 0, 0), (0.02, 0, 0), (0.03, 0, 0)],
[(0, 0, 1.112), (0.01, 0, 1.112),
(0.02, 0, 1.112), (0.03, 0, 1.112)],
[(0, 0, 2.224), (0.01, 0, 2.224),
(0.02, 0, 2.224), (0.03, 0, 2.224)],
])
def __init__(self, id, trt, mag=5.0, rake=90.):
self.hypocenter = Point(17.788328, -77.219496, 7.8125)
lons = numpy.array(
[-78.18106621, -78.18013243, -78.17919864, -78.15399318,
-78.15305962, -78.15212606])
lats = numpy.array(
[15.615, 15.615, 15.615, 15.56553731,
15.56553731, 15.56553731])
self.surface = ComplexFaultSurface(Mesh(lons, lats, None))
self.mag = mag
self.rake = rake
self.id = id
self.site_indices = None
def count_ruptures(self):
"""
See :meth:
`openquake.hazardlib.source.base.BaseSeismicSource.count_ruptures`.
"""
whole_fault_surface = ComplexFaultSurface.from_fault_data(self.edges, self.rupture_mesh_spacing)
whole_fault_mesh = whole_fault_surface.get_mesh()
cell_center, cell_length, cell_width, cell_area = whole_fault_mesh.get_cell_dimensions()
counts = 0
for (mag, mag_occ_rate) in self.get_annual_occurrence_rates():
rupture_area = self.magnitude_scaling_relationship.get_median_area(mag, self.rake)
rupture_length = numpy.sqrt(rupture_area * self.rupture_aspect_ratio)
rupture_slices = _float_ruptures(rupture_area, rupture_length, cell_area, cell_length)
counts += len(rupture_slices)
return counts
def get_rupture_enclosing_polygon(self, dilation=0):
"""
Uses :meth:`openquake.hazardlib.geo.surface.complex_fault.ComplexFaultSurface.surface_projection_from_fault_data`
for getting the fault's surface projection and then calls
its :meth:`~openquake.hazardlib.geo.polygon.Polygon.dilate`
method passing in ``dilation`` parameter.
See :meth:`superclass method
<openquake.hazardlib.source.base.BaseSeismicSource.get_rupture_enclosing_polygon>`
for parameter and return value definition.
"""
polygon = ComplexFaultSurface.surface_projection_from_fault_data(self.edges)
if dilation:
return polygon.dilate(dilation)
else:
return polygon
def get_rupture_enclosing_polygon(self, dilation=0):
"""
Uses :meth:`openquake.hazardlib.geo.surface.complex_fault.ComplexFaultSurface.surface_projection_from_fault_data`
for getting the fault's surface projection and then calls
its :meth:`~openquake.hazardlib.geo.polygon.Polygon.dilate`
method passing in ``dilation`` parameter.
See :meth:`superclass method
<openquake.hazardlib.source.base.BaseSeismicSource.get_rupture_enclosing_polygon>`
for parameter and return value definition.
"""
polygon = ComplexFaultSurface.surface_projection_from_fault_data(
self.edges)
if dilation:
return polygon.dilate(dilation)
else:
return polygon
def __init__(self, traces, mesh_spacing=1.0):
'''
Set up function an creates complex fault surface
:param list traces:
Edges of the complex fault as a list of :class:
openquake.hazardlib.geo.line.Line. Please refer to documentation of
openquake.hazardlib.geo.surface.complex_fault.ComplexFaultSurface
for details.
:param float mesh_spacing:
Spacing (km) of the fault surface mesh
'''
self.typology = 'Complex'
self.trace = traces
self.upper_depth = None
self.lower_depth = None
self.surface = ComplexFaultSurface.from_fault_data(self.trace,
mesh_spacing)
self.dip = self.surface.get_dip()
def __init__(self, traces, mesh_spacing=1.0):
'''
Set up function an creates complex fault surface
:param list traces:
Edges of the complex fault as a list of :class:
openquake.hazardlib.geo.line.Line. Please refer to documentation of
openquake.hazardlib.geo.surface.complex_fault.ComplexFaultSurface
for details.
:param float mesh_spacing:
Spacing (km) of the fault surface mesh
'''
self.typology = 'Complex'
self.trace = traces
self.upper_depth = None
self.lower_depth = None
self.surface = ComplexFaultSurface.from_fault_data(
self.trace, mesh_spacing)
self.dip = self.surface.get_dip()
def iter_ruptures(self):
"""
See :meth:
`openquake.hazardlib.source.base.BaseSeismicSource.iter_ruptures`.
Uses :func:`_float_ruptures` for finding possible rupture locations
on the whole fault surface.
"""
whole_fault_surface = ComplexFaultSurface.from_fault_data(
self.edges, self.rupture_mesh_spacing
)
whole_fault_mesh = whole_fault_surface.get_mesh()
cell_center, cell_length, cell_width, cell_area = (
whole_fault_mesh.get_cell_dimensions()
)
for (mag, mag_occ_rate) in self.get_annual_occurrence_rates():
rupture_area = self.magnitude_scaling_relationship.get_median_area(
mag, self.rake
)
rupture_length = numpy.sqrt(
rupture_area * self.rupture_aspect_ratio)
rupture_slices = _float_ruptures(
rupture_area, rupture_length, cell_area, cell_length
)
occurrence_rate = mag_occ_rate / float(len(rupture_slices))
for rupture_slice in rupture_slices[self.start:self.stop]:
mesh = whole_fault_mesh[rupture_slice]
# XXX: use surface centroid as rupture's hypocenter
# XXX: instead of point with middle index
hypocenter = mesh.get_middle_point()
try:
surface = ComplexFaultSurface(mesh)
except ValueError as e:
raise ValueError("Invalid source with id=%s. %s" % (
self.source_id, str(e)))
yield ParametricProbabilisticRupture(
mag, self.rake, self.tectonic_region_type, hypocenter,
surface, type(self),
occurrence_rate, self.temporal_occurrence_model
)
def count_ruptures(self):
"""
See :meth:
`openquake.hazardlib.source.base.BaseSeismicSource.count_ruptures`.
"""
whole_fault_surface = ComplexFaultSurface.from_fault_data(
self.edges, self.rupture_mesh_spacing)
whole_fault_mesh = whole_fault_surface.get_mesh()
cell_center, cell_length, cell_width, cell_area = (
whole_fault_mesh.get_cell_dimensions())
counts = 0
for (mag, mag_occ_rate) in self.get_annual_occurrence_rates():
rupture_area = self.magnitude_scaling_relationship.get_median_area(
mag, self.rake)
rupture_length = numpy.sqrt(rupture_area *
self.rupture_aspect_ratio)
rupture_slices = _float_ruptures(rupture_area, rupture_length,
cell_area, cell_length)
counts += len(rupture_slices[self.start:self.stop])
return counts
def create_geometry(self, input_geometry, mesh_spacing=1.0):
'''
If geometry is defined as a numpy array then create instance of
nhlib.geo.line.Line class, otherwise if already instance of class
accept class
:param input_geometry:
List of at least two fault edges of the fault source from
shallowest to deepest. Each edge can be represented as as either
i) instance of nhlib.geo.polygon.Polygon class
ii) numpy.ndarray [Longitude, Latitude, Depth]
:param float mesh_spacing:
Spacing of the fault mesh (km) {default = 1.0}
'''
if not isinstance(input_geometry, list) or len(input_geometry) < 2:
raise ValueError('Complex fault geometry incorrectly defined')
self.fault_edges = []
for edge in input_geometry:
if not isinstance(edge, Line):
if not isinstance(edge, np.ndarray):
raise ValueError('Unrecognised or unsupported geometry '
'definition')
else:
self.fault_edges.append(Line([Point(row[0], row[1], row[2])
for row in edge]))
else:
self.fault_edges.append(edge)
# Updates the upper and lower sesmogenic depths to reflect geometry
self._get_minmax_edges(edge)
# Build fault surface
self.geometry = ComplexFaultSurface.from_fault_data(self.fault_edges,
mesh_spacing)
# Get a mean dip
self.dip = self.geometry.get_dip()
def create_geometry(self, input_geometry, mesh_spacing=1.0):
'''
If geometry is defined as a numpy array then create instance of
nhlib.geo.line.Line class, otherwise if already instance of class
accept class
:param input_geometry:
List of at least two fault edges of the fault source from
shallowest to deepest. Each edge can be represented as as either
i) instance of nhlib.geo.polygon.Polygon class
ii) numpy.ndarray [Longitude, Latitude, Depth]
:param float mesh_spacing:
Spacing of the fault mesh (km) {default = 1.0}
'''
if not isinstance(input_geometry, list) or len(input_geometry) < 2:
raise ValueError('Complex fault geometry incorrectly defined')
self.fault_edges = []
for edge in input_geometry:
if not isinstance(edge, Line):
if not isinstance(edge, np.ndarray):
raise ValueError('Unrecognised or unsupported geometry '
'definition')
else:
self.fault_edges.append(
Line([Point(row[0], row[1], row[2]) for row in edge]))
else:
self.fault_edges.append(edge)
# Updates the upper and lower sesmogenic depths to reflect geometry
self._get_minmax_edges(edge)
# Build fault surface
self.geometry = ComplexFaultSurface.from_fault_data(
self.fault_edges, mesh_spacing)
# Get a mean dip
self.dip = self.geometry.get_dip()
def polygon(self):
"""
The underlying polygon
`"""
return ComplexFaultSurface.surface_projection_from_fault_data(
self.edges)
def polygon(self):
"""
The underlying polygon
`"""
return ComplexFaultSurface.surface_projection_from_fault_data(
self.edges)