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_invalid_surface_polygon_case3(self):
# intermediate edge has opposite strike than top and bottom
edges = [
Line([Point(0, 0), Point(0, 2)]),
Line([Point(0.1, 2, 10), Point(0.1, 0, 10)]),
Line([Point(0.2, 0, 20), Point(0.2, 2, 20)])
]
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 setUp(self):
'''
'''
self.simple_edge = Line(
[Point(10.5, 10.5, 1.0),
Point(11.35, 11.45, 2.0)])
top_edge = Line([Point(10.5, 10.5, 1.0), Point(11.35, 11.45, 2.0)])
int_edge = Line([Point(10.5, 10.5, 20.0), Point(11.35, 11.45, 21.0)])
low_edge = Line([Point(10.5, 10.5, 40.0), Point(11.35, 11.45, 40.0)])
self.complex_edge = [top_edge, int_edge, low_edge]
def linestring_node_to_line(node, with_depth=False):
"""
Returns an instance of a Linestring node to :class:
openquake.hazardlib.geo.line.Line
"""
assert "LineString" in node.tag
crds = [float(x) for x in node.nodes[0].text.split()]
if with_depth:
return Line([Point(crds[iloc], crds[iloc + 1], crds[iloc + 2])
for iloc in range(0, len(crds), 3)])
else:
return Line([Point(crds[iloc], crds[iloc + 1])
for iloc in range(0, len(crds), 2)])
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 setUp(self):
'''
Creates a complex fault typology
'''
x0 = Point(30., 30., 0.)
x1 = x0.point_at(30., 0., 30.)
x2 = x1.point_at(30., 0., 60.)
upper_edge = Line([x0, x1, x2])
lower_edge = Line([x0.point_at(40., 20., 130.),
x1.point_at(42., 25., 130.),
x2.point_at(41., 22., 130.)])
self.edges = [upper_edge, lower_edge]
self.fault = None
def test_non_positive_mesh_spacing(self):
edges = [
Line([Point(0, 0), Point(0, 1)]),
Line([Point(0, 0, 1), Point(0, 1, 1)])
]
self.assertRaises(ValueError,
ComplexFaultSurface.from_fault_data,
edges,
mesh_spacing=0)
self.assertRaises(ValueError,
ComplexFaultSurface.from_fault_data,
edges,
mesh_spacing=-1)
def get_target_sites_mesh(self, maximum_distance, spacing, vs30,
vs30measured=True, z1pt0=None, z2pt5=None,
backarc=False):
"""
Renders a two dimensional mesh of points over the rupture surface
"""
# Get bounding box of dilated rupture
lowx, highx, lowy, highy = self._get_limits_maximum_rjb(
maximum_distance)
# Create bounding box lines and then resample at spacing
ewline = Line([Point(lowx, highy, 0.), Point(highx, highy, 0.)])
nsline = Line([Point(lowx, highy, 0.), Point(lowx, lowy, 0.)])
ewline = ewline.resample(spacing)
nsline = nsline.resample(spacing)
xvals = np.array([pnt.longitude for pnt in ewline.points])
yvals = np.array([pnt.latitude for pnt in nsline.points])
gridx, gridy = np.meshgrid(xvals, yvals)
numx, numy = np.shape(gridx)
npts = numx * numy
gridx = (np.reshape(gridx, npts, 1)).flatten()
gridy = (np.reshape(gridy, npts, 1)).flatten()
site_list = []
if not z1pt0:
#z1pt0 = vs30_to_z1pt0_as08(vs30)
z1pt0 = vs30_to_z1pt0_cy14(vs30)
if not z2pt5:
#z2pt5 = z1pt0_to_z2pt5(z1pt0)
z2pt5 = vs30_to_z2pt5_cb14(vs30)
for iloc in range(0, npts):
site_list.append(Site(Point(gridx[iloc], gridy[iloc], 0.),
vs30,
vs30measured,
z1pt0,
z2pt5,
backarc=backarc))
self.target_sites = SiteCollection(site_list)
self.target_sites_config = {
"TYPE": "Mesh",
"RMAX": maximum_distance,
"SPACING": spacing,
"VS30": vs30,
"VS30MEASURED": vs30measured,
"Z1.0": z1pt0,
"Z2.5": z2pt5,
"BACKARC": backarc}
return self.target_sites
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_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_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_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 get_grd_nodes_within_buffer(self, x, y, buffer_distance, minlo, maxlo,
minla, maxla):
"""
:parameter x:
An iterable containing the longitudes of the points defining the
polyline
:parameter y:
An iterable containing the latitudes of the points defining the
polyline
:parameter buffer_distance:
Horizontal buffer_distance used to select earthquakes included in
the catalogue [in km]
:parameter minlo:
:parameter minla:
:parameter maxlo:
:parameter maxla:
"""
line = Line([Point(lo, la) for lo, la in zip(self.plo, self.pla)])
idxs = numpy.nonzero((x > minlo) & (x < maxlo) & (y > minla)
& (y < maxla))
xs = x[idxs[0]]
ys = y[idxs[0]]
coo = [(lo, la) for lo, la in zip(list(xs), list(ys))]
if len(coo):
dst = get_min_distance(line, numpy.array(coo))
return idxs[0][abs(dst) <= buffer_distance]
else:
print(' Warning: no nodes found around the cross-section')
return None
def _parse_edge_to_line(cls, edge_string, dimension=2):
'''
For a string returned from the _xpath function, convert to an
instance of a line class
:param edge_string:
List of nodes in format returned from _xpath
:param int dimension:
Number of dimenions - 2 (Long, Lat) or 3 (Long, Lat, Depth)
'''
coords = edge_string.text.split()
if dimension == 3:
# Long lat and depth
edge = [
Point(float(coords[iloc]), float(coords[iloc + 1]),
float(coords[iloc + 2]))
for iloc in range(0, len(coords), dimension)
]
else:
# Only long & lat
edge = [
Point(float(coords[iloc]), float(coords[iloc + 1]))
for iloc in range(0, len(coords), dimension)
]
return Line(edge)
def make_rupture(self):
# Create the rupture surface.
upper_seismogenic_depth = 3.
lower_seismogenic_depth = 15.
dip = 90.
mesh_spacing = 1.
fault_trace_start = Point(28.531397, 40.8790859336)
fault_trace_end = Point(28.85, 40.9)
fault_trace = Line([fault_trace_start, fault_trace_end])
default_arguments = {
'mag':
6.5,
'rake':
180.,
'tectonic_region_type':
const.TRT.STABLE_CONTINENTAL,
'hypocenter':
Point(28.709146553353872, 40.890863701462457, 11.0),
'surface':
SimpleFaultSurface.from_fault_data(fault_trace,
upper_seismogenic_depth,
lower_seismogenic_depth,
dip=dip,
mesh_spacing=mesh_spacing),
'rupture_slip_direction':
0.,
'occurrence_rate':
0.01,
'temporal_occurrence_model':
PoissonTOM(50)
}
kwargs = default_arguments
rupture = ParametricProbabilisticRupture(**kwargs)
return rupture
def test_fault_trace_points(self):
"""
The fault trace must have at least two points.
"""
fault_trace = Line([Point(0.0, 0.0)])
self.assertRaises(ValueError, SimpleFaultSurface.check_fault_data,
fault_trace, 0.0, 1.0, 90.0, 1.0)
def test_get_dip_2(self):
p1 = Point(0.0, 0.0)
p2 = Point(0.0635916966572, 0.0635916574897)
surface = SimpleFaultSurface.from_fault_data(Line([p1, p2]), 1.0, 6.0,
30.0, 1.0)
self.assertAlmostEquals(30.0, surface.get_dip(), 1)
def test_get_strike_1(self):
p1 = Point(0.0, 0.0)
p2 = Point(0.0635916966572, 0.0635916574897)
surface = SimpleFaultSurface.from_fault_data(Line([p1, p2]), 1.0, 6.0,
89.9, 1.0)
self.assertAlmostEquals(45.0, surface.get_strike(), delta=1e-4)
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_inclined_non_planar_surface(self):
p1 = Point(0.1, 0.1, 0.0)
p2 = Point(0.1, 0.117986432118, 0.0)
p3 = Point(0.117986470254, 0.117986426305, 0.0)
p4 = Point(0.117986470254, 0.0999999941864, 0.0)
surface = SimpleFaultSurface.from_fault_data(Line([p1, p2, p3, p4]),
2.0, 4.0, 30.0, 1.0)
self.assertAlmostEqual(surface.get_width(), 4.0, places=2)
def test_get_strike_2(self):
p1 = Point(0.0, 0.0)
p2 = Point(0.0635916966572, 0.0635916574897)
p3 = Point(0.0860747816618, 0.102533437776)
surface = SimpleFaultSurface.from_fault_data(Line([p1, p2, p3]), 1.0,
6.0, 89.9, 1.0)
self.assertAlmostEqual(40.0, surface.get_strike(), delta=0.02)
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_get_dip_1(self):
p1 = Point(0.0, 0.0)
p2 = Point(0.0635916966572, 0.0635916574897)
p3 = Point(0.0860747816618, 0.102533437776)
surface = SimpleFaultSurface.from_fault_data(Line([p1, p2, p3]), 1.0,
6.0, 90.0, 1.0)
self.assertAlmostEquals(90.0, surface.get_dip(), delta=1e-6)
def test_get_mesh_5(self):
p1 = Point(179.9, 0.0)
p2 = Point(180.0, 0.0)
p3 = Point(-179.9, 0.0)
fault = SimpleFaultSurface.from_fault_data(Line([p1, p2, p3]), 1.0,
6.0, 90.0, 1.0)
self.assert_mesh_is(fault, test_data.TEST_5_MESH)
def test_get_fault_vertices_3d(self):
p0, p1, p2, p3 = SimpleFaultSurface.get_fault_patch_vertices(
Line([Point(10., 45.2),
Point(10.5, 45.3),
Point(10., 45.487783)]),
upper_seismogenic_depth=0.,
lower_seismogenic_depth=14.,
dip=30,
index_patch=1.)
p4, p5, p6, p7 = SimpleFaultSurface.get_fault_patch_vertices(
Line([Point(10., 45.2),
Point(10.5, 45.3),
Point(10., 45.487783)]),
upper_seismogenic_depth=0.,
lower_seismogenic_depth=14.,
dip=30,
index_patch=2.)
# Test for the first patch
self.assertAlmostEqual(p0.longitude, 10., delta=0.1)
self.assertAlmostEqual(p0.latitude, 45.2, delta=0.1)
self.assertAlmostEqual(p0.depth, 0., delta=0.1)
self.assertAlmostEqual(p1.longitude, 10.5, delta=0.1)
self.assertAlmostEqual(p1.latitude, 45.3, delta=0.1)
self.assertAlmostEqual(p1.depth, 0., delta=0.1)
self.assertAlmostEqual(p2.longitude, 10.81, delta=0.1)
self.assertAlmostEqual(p2.latitude, 45.2995, delta=0.1)
self.assertAlmostEqual(p2.depth, 14., delta=0.1)
self.assertAlmostEqual(p3.longitude, 10.31, delta=0.1)
self.assertAlmostEqual(p3.latitude, 45.1995, delta=0.1)
self.assertAlmostEqual(p3.depth, 14., delta=0.1)
# Test for the second patch
self.assertAlmostEqual(p4.longitude, 10.5, delta=0.1)
self.assertAlmostEqual(p4.latitude, 45.3, delta=0.1)
self.assertAlmostEqual(p4.depth, 0., delta=0.1)
self.assertAlmostEqual(p5.longitude, 10.0, delta=0.1)
self.assertAlmostEqual(p5.latitude, 45.4877, delta=0.1)
self.assertAlmostEqual(p5.depth, 0., delta=0.1)
self.assertAlmostEqual(p6.longitude, 10.311, delta=0.1)
self.assertAlmostEqual(p6.latitude, 45.4873, delta=0.1)
self.assertAlmostEqual(p6.depth, 14., delta=0.1)
self.assertAlmostEqual(p7.longitude, 10.81, delta=0.1)
self.assertAlmostEqual(p7.latitude, 45.2995, delta=0.1)
self.assertAlmostEqual(p7.depth, 14., delta=0.1)
def test_dip_90_three_points(self):
polygon = SimpleFaultSurface.surface_projection_from_fault_data(
Line([Point(1, -20), Point(1, -20.2), Point(2, -19.7)]),
dip=90,
upper_seismogenic_depth=30, lower_seismogenic_depth=50,
)
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_self_intersection(self):
polygon = SimpleFaultSurface.surface_projection_from_fault_data(
Line([Point(1, -2), Point(2, -1.9), Point(3, -2.1), Point(4, -2)]),
dip=90,
upper_seismogenic_depth=10, lower_seismogenic_depth=20,
)
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_get_mesh_topo(self):
p1 = Point(0.0, 0.0, -2.0)
p2 = Point(0.0, 0.0359728811759, -2.0)
p3 = Point(0.0190775080917, 0.0550503815182, -2.0)
p4 = Point(0.03974514139, 0.0723925718856, -2.0)
fault = SimpleFaultSurface.from_fault_data(Line([p1, p2, p3, p4]),
-2.0, 2.0, 90.0, 1.0)
self.assert_mesh_is(fault, test_data.TEST_TOPO_MESH)
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_get_mesh_1(self):
p1 = Point(0.0, 0.0, 0.0)
p2 = Point(0.0, 0.0359728811759, 0.0)
p3 = Point(0.0190775080917, 0.0550503815182, 0.0)
p4 = Point(0.03974514139, 0.0723925718856, 0.0)
fault = SimpleFaultSurface.from_fault_data(
Line([p1, p2, p3, p4]), 0.0, 4.2426406871192848, 45.0, 1.0)
self.assert_mesh_is(fault, test_data.TEST_1_MESH)
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 get_target_sites_mesh(self, maximum_distance, spacing, vs30,
vs30measured=True, z1pt0=None, z2pt5=None):
"""
Renders a two dimensional mesh of points over the rupture surface
"""
# Get bounding box of dilated rupture
lowx, highx, lowy, highy = self._get_limits_maximum_rjb(
maximum_distance)
# Create bounding box lines and then resample at spacing
ewline = Line([Point(lowx, highy, 0.), Point(highx, highy, 0.)])
nsline = Line([Point(lowx, highy, 0.), Point(lowx, lowy, 0.)])
ewline = ewline.resample(spacing)
nsline = nsline.resample(spacing)
xvals = np.array([pnt.longitude for pnt in ewline.points])
yvals = np.array([pnt.latitude for pnt in nsline.points])
gridx, gridy = np.meshgrid(xvals, yvals)
numx, numy = np.shape(gridx)
npts = numx * numy
gridx = (np.reshape(gridx, npts, 1)).flatten()
gridy = (np.reshape(gridy, npts, 1)).flatten()
site_list = []
if not z1pt0:
z1pt0 = vs30_to_z1pt0_as08(vs30)
if not z2pt5:
z2pt5 = z1pt0_to_z2pt5(z1pt0)
for iloc in range(0, npts):
site_list.append(Site(Point(gridx[iloc], gridy[iloc], 0.),
vs30,
vs30measured,
z1pt0,
z2pt5))
self.target_sites = SiteCollection(site_list)
return self.target_sites
def read_fault_geometry(self, geo_dict, mesh_spacing=1.0):
'''
Creates the fault geometry from the parameters specified in the
dictionary.
:param dict geo_dict:
Sub-dictionary of main fault dictionary containing only
the geometry attributes
:param float mesh_spacing:
Fault mesh spacing (km)
:returns:
Instance of SimpleFaultGeometry or ComplexFaultGeometry, depending
on typology
'''
if geo_dict['Fault_Typology'] == 'Simple':
# Simple fault geometry
raw_trace = geo_dict['Fault_Trace']
trace = Line([Point(raw_trace[ival], raw_trace[ival + 1])
for ival in range(0, len(raw_trace), 2)])
geometry = SimpleFaultGeometry(trace,
geo_dict['Dip'],
geo_dict['Upper_Depth'],
geo_dict['Lower_Depth'],
mesh_spacing)
elif geo_dict['Fault_Typology'] == 'Complex':
# Complex Fault Typology
trace = []
for raw_trace in geo_dict['Fault_Trace']:
fault_edge = Line(
[Point(raw_trace[ival], raw_trace[ival + 1],
raw_trace[ival + 2]) for ival in range(0, len(raw_trace),
3)])
trace.append(fault_edge)
geometry = ComplexFaultGeometry(trace, mesh_spacing)
else:
raise ValueError('Unrecognised or unsupported fault geometry!')
return geometry