def test_equality_methods():
"""
Tests the (in)equality methods of source and receiver objects. They both
inherit from the same base class thus they are tested here - but it
would also be suitable for the receiver tests.
"""
src1 = Source(latitude=1, longitude=2)
src2 = Source(latitude=3, longitude=3)
rec1 = Receiver(latitude=1, longitude=2)
rec2 = Receiver(latitude=3, longitude=3)
assert src1 == src1
assert src2 == src2
assert rec1 == rec1
assert rec2 == rec2
assert src1 != src2
assert src1 != rec1
assert src1 != rec2
assert src2 != src1
assert src2 != rec1
assert src2 != rec2
assert rec1 != rec2
assert rec1 != src1
assert rec1 != src2
assert rec2 != src1
assert rec2 != src1
assert rec2 != src2
def test_parse_obspy_objects():
"""
Tests parsing from ObsPy objects.
"""
cat = obspy.read_events(EVENT_FILE)
ev = cat[0]
_assert_src(Source.parse(cat))
_assert_src(Source.parse(ev))
def test_parse_obspy_objects():
"""
Tests parsing from ObsPy objects.
"""
cat = obspy.read_events(EVENT_FILE)
ev = cat[0]
_assert_src(Source.parse(cat))
_assert_src(Source.parse(ev))
def test_parse_CMTSOLUTIONS_file(tmpdir):
"""
Tests parsing from a CMTSOLUTIONS file.
"""
filename = os.path.join(str(tmpdir), "CMTSOLUTIONS")
lines = (
"PDEW2011 8 23 17 51 4.60 37.9400 -77.9300 6.0 5.9 5.8 VIRGINIA",
"event name: 201108231751A",
"time shift: 1.1100",
"half duration: 1.8000",
"latitude: 37.9100",
"longitude: -77.9300",
"depth: 12.0000",
"Mrr: 4.710000e+24",
"Mtt: 3.810000e+22",
"Mpp: -4.740000e+24",
"Mrt: 3.990000e+23",
"Mrp: -8.050000e+23",
"Mtp: -1.230000e+24")
with open(filename, "wt") as fh:
fh.write("\n".join(lines))
origin_time = obspy.UTCDateTime(2011, 8, 23, 17, 51, 4.6)
src = Source.parse(filename)
src_params = np.array([src.latitude, src.longitude, src.depth_in_m,
src.m_rr, src.m_tt, src.m_pp, src.m_rt, src.m_rp,
src.m_tp], dtype="float64")
# Latitude will have assumed to be WGS84 and converted to geocentric
# latitude.
np.testing.assert_allclose(src_params, np.array(
(elliptic_to_geocentric_latitude(37.91), -77.93, 12000, 4.71E17,
3.81E15, -4.74E17, 3.99E16, -8.05E16,
-1.23E17), dtype="float64"))
assert src.origin_time == origin_time
# Write again. Reset latitude beforehand.
filename = os.path.join(str(tmpdir), "CMTSOLUTIONS2")
src.latitude = 37.91
src.write_CMTSOLUTION_file(filename)
# This time there is no need to convert latitudes. Writing will convert
# to WGS84 and reading will convert back.
src = Source.parse(filename)
src_params = np.array([src.latitude, src.longitude, src.depth_in_m,
src.m_rr, src.m_tt, src.m_pp, src.m_rt, src.m_rp,
src.m_tp], dtype="float64")
np.testing.assert_allclose(src_params, np.array(
(37.91, -77.93, 12000, 4.71E17, 3.81E15, -4.74E17, 3.99E16, -8.05E16,
-1.23E17), dtype="float64"), rtol=1E-5)
assert src.origin_time == origin_time
def test_print_regressions():
"""
Guard against a regression for printing a source object.
"""
src = Source.from_strike_dip_rake(
latitude=27.77,
longitude=85.37,
depth_in_m=12000.0,
M0=1e21,
strike=32.0,
dip=62.0,
rake=90.0,
)
assert (str(src)) == ("Instaseis Source:\n"
"\tOrigin Time : 1970-01-01T00:00:00.000000Z\n"
"\tLongitude : 85.4 deg\n"
"\tLatitude : 27.8 deg\n"
"\tDepth : 1.2e+01 km km\n"
"\tMoment Magnitude : 7.93\n"
"\tScalar Moment : 1.00e+21 Nm\n"
"\tMrr : 8.29e+20 Nm\n"
"\tMtt : -2.33e+20 Nm\n"
"\tMpp : -5.96e+20 Nm\n"
"\tMrt : 2.96e+20 Nm\n"
"\tMrp : 4.74e+20 Nm\n"
"\tMtp : -3.73e+20 Nm\n")
def test_parse_cmtsolutions_file(tmpdir):
"""
Tests parsing from a CMTSOLUTIONS file.
"""
filename = os.path.join(str(tmpdir), "CMTSOLUTIONS")
lines = (" PDE 2011 8 23 17 51 4.60 37.9400 -77.9300 6.0 5.9 5.8 "
"VIRGINIA", "event name: 201108231751A",
"time shift: 1.00", "half duration: 1.8000",
"latitude: 37.9100", "longitude: -77.9300",
"depth: 12.0000", "Mrr: 4.710000e+24",
"Mtt: 3.810000e+22", "Mpp: -4.740000e+24",
"Mrt: 3.990000e+23", "Mrp: -8.050000e+23",
"Mtp: -1.230000e+24")
with open(filename, "wt") as fh:
fh.write("\n".join(lines))
# This is the hypocentral time + 1 seconds (the time shift in the
# CMTSOLUTION file).
origin_time = obspy.UTCDateTime(2011, 8, 23, 17, 51, 5.6)
src = Source.parse(filename)
src_params = np.array([
src.latitude, src.longitude, src.depth_in_m, src.m_rr, src.m_tt,
src.m_pp, src.m_rt, src.m_rp, src.m_tp
],
dtype="float64")
# Latitude will have assumed to be WGS84 and converted to geocentric
# latitude. The import machinery should do that.
np.testing.assert_allclose(
src_params,
np.array((elliptic_to_geocentric_latitude(37.91), -77.93, 12000,
4.71E17, 3.81E15, -4.74E17, 3.99E16, -8.05E16, -1.23E17),
dtype="float64"))
assert src.origin_time == origin_time
def focmec(self):
if self.ui.source_tab.currentIndex() == 0:
return [
float(self.ui.m_rr.value()),
float(self.ui.m_tt.value()),
float(self.ui.m_pp.value()),
float(self.ui.m_rt.value()),
float(self.ui.m_rp.value()),
float(self.ui.m_tp.value()),
]
elif self.ui.source_tab.currentIndex() == 1:
source = Source.from_strike_dip_rake(
latitude=float(self.ui.source_latitude.value()),
longitude=float(self.ui.source_longitude.value()),
depth_in_m=float(self.source_depth) * 1000.0,
strike=float(self.ui.strike_slider.value()),
dip=float(self.ui.dip_slider.value()),
rake=float(self.ui.rake_slider.value()),
M0=1e16,
)
return [
source.m_rr,
source.m_tt,
source.m_pp,
source.m_rt,
source.m_rp,
source.m_tp,
]
def test_finite_source():
"""
incremental tests of bwd mode with source force
"""
from obspy.signal.filter import lowpass
instaseis_bwd = InstaSeisDB(os.path.join(DATA, "100s_db_bwd_displ_only"))
receiver = Receiver(latitude=42.6390, longitude=74.4940)
source = Source(
latitude=89.91, longitude=0.0, depth_in_m=12000,
m_rr=4.710000e+24 / 1E7,
m_tt=3.810000e+22 / 1E7,
m_pp=-4.740000e+24 / 1E7,
m_rt=3.990000e+23 / 1E7,
m_rp=-8.050000e+23 / 1E7,
m_tp=-1.230000e+24 / 1E7)
dt = instaseis_bwd.dt
sliprate = np.zeros(1000)
sliprate[0] = 1.
sliprate = lowpass(sliprate, 1./100., 1./dt, corners=4)
source.set_sliprate(sliprate, dt, time_shift=0., normalize=True)
st_fin = instaseis_bwd.get_seismograms_finite_source(
sources=[source], receiver=receiver,
components=('Z', 'N', 'E', 'R', 'T'), dt=0.1)
st_ref = instaseis_bwd.get_seismograms(
source=source, receiver=receiver,
components=('Z', 'N', 'E', 'R', 'T'), dt=0.1, reconvolve_stf=True)
np.testing.assert_allclose(st_fin.select(component='Z')[0].data,
st_ref.select(component='Z')[0].data,
rtol=1E-7, atol=1E-12)
np.testing.assert_allclose(st_fin.select(component='N')[0].data,
st_ref.select(component='N')[0].data,
rtol=1E-7, atol=1E-12)
np.testing.assert_allclose(st_fin.select(component='E')[0].data,
st_ref.select(component='E')[0].data,
rtol=1E-7, atol=1E-12)
np.testing.assert_allclose(st_fin.select(component='R')[0].data,
st_ref.select(component='R')[0].data,
rtol=1E-7, atol=1E-12)
np.testing.assert_allclose(st_fin.select(component='T')[0].data,
st_ref.select(component='T')[0].data,
rtol=1E-7, atol=1E-12)
def iterate(self):
rec = Receiver(latitude=20, longitude=20)
lat = random.random() * 0.5
lat += 44
lng = random.random() * 0.5
lng += 44
depth_in_m = random.random() * 50000
src = Source(latitude=lat, longitude=lng, depth_in_m=depth_in_m)
self.db.get_seismograms(source=src, receiver=rec)
def test_m0():
"""
Tests computation of scalar Moment.
"""
strike = 10.0
dip = 20.0
rake = 30.0
m0 = 1e16
source = Source.from_strike_dip_rake(0.0, 0.0, 0.0, strike, dip, rake, m0)
assert source.M0 == m0
def test_m0():
"""
Tests computation of scalar Moment.
"""
strike = 10.
dip = 20.
rake = 30.
m0 = 1e16
source = Source.from_strike_dip_rake(0., 0., 0., strike, dip, rake, m0)
assert source.M0 == m0
def source(self):
fm = self.focmec
return Source(latitude=float(self.ui.source_latitude.value()),
longitude=float(self.ui.source_longitude.value()),
depth_in_m=float(self.source_depth) * 1000.0,
m_rr=fm[0],
m_tt=fm[1],
m_pp=fm[2],
m_rt=fm[3],
m_rp=fm[4],
m_tp=fm[5])
def test_M0():
"""
Tests computation of scalar Moment.
"""
strike = 10.
dip = 20.
rake = 30.
M0 = 1e16
source = Source.from_strike_dip_rake(0., 0., 0., strike, dip, rake, M0)
assert source.M0 == M0
def iterate(self):
# Random points on a sphere.
lat = np.rad2deg(np.arcsin(2 * random.random() - 1))
lng = random.random() * 360.0 - 180.0
rec = Receiver(latitude=lat, longitude=lng)
lat = np.rad2deg(np.arcsin(2 * random.random() - 1))
lng = random.random() * 360.0 - 180.0
depth_in_m = random.random() * self.max_depth
src = Source(latitude=lat, longitude=lng, depth_in_m=depth_in_m)
self.db.get_seismograms(source=src, receiver=rec)
def test_sliprate_convenience_methods_finite_source():
"""
Tests some convenience methods of sliprates for finite sources.
"""
src = Source(latitude=0.0, longitude=90.0)
fs = FiniteSource(pointsources=[src])
fs.set_sliprate_dirac(2.0, 5)
np.testing.assert_allclose(np.array([0.5, 0, 0, 0, 0]), src.sliprate)
src = Source(latitude=0.0, longitude=90.0)
fs = FiniteSource(pointsources=[src])
fs.set_sliprate_lp(2.0, 5, 0.1)
np.testing.assert_allclose(np.array(
[0.023291, 0.111382, 0.211022, 0.186723, 0.045481]), src.sliprate,
rtol=1E-3)
src = Source(latitude=0.0, longitude=90.0)
src.sliprate = np.ones(5)
src.dt = 0.25
fs = FiniteSource(pointsources=[src])
fs.normalize_sliprate()
np.testing.assert_allclose(np.ones(5), src.sliprate)
def iterate(self):
if self.current_depth_counter >= self.depth_count:
self.counter += 1
self.current_depth_counter = 0
# Fix latitude.
lat = 0.0
# Longitude values increase in 1 km steps.
lng = self.counter * 0.01
src = Source(latitude=lat,
longitude=lng,
depth_in_m=self.depths[self.current_depth_counter])
self.db.get_seismograms(source=src, receiver=self.rec)
self.current_depth_counter += 1
def test_str_method_of_src():
src = Source(latitude=0.0, longitude=90.0)
assert str(src) == ("Instaseis Source:\n"
"\tOrigin Time : 1970-01-01T00:00:00.000000Z\n"
"\tLongitude : 90.0 deg\n"
"\tLatitude : 0.0 deg\n"
"\tDepth : not set km\n"
"\tMoment Magnitude : -inf\n"
"\tScalar Moment : 0.00e+00 Nm\n"
"\tMrr : 0.00e+00 Nm\n"
"\tMtt : 0.00e+00 Nm\n"
"\tMpp : 0.00e+00 Nm\n"
"\tMrt : 0.00e+00 Nm\n"
"\tMrp : 0.00e+00 Nm\n"
"\tMtp : 0.00e+00 Nm\n")
def focmec(self):
if self.ui.source_tab.currentIndex() == 0:
return [float(self.ui.m_rr.value()), float(self.ui.m_tt.value()),
float(self.ui.m_pp.value()), float(self.ui.m_rt.value()),
float(self.ui.m_rp.value()), float(self.ui.m_tp.value())]
elif self.ui.source_tab.currentIndex() == 1:
source = Source.from_strike_dip_rake(
latitude=float(self.ui.source_latitude.value()),
longitude=float(self.ui.source_longitude.value()),
depth_in_m=float(self.source_depth) * 1000.0,
strike=float(self.ui.strike_slider.value()),
dip=float(self.ui.dip_slider.value()),
rake=float(self.ui.rake_slider.value()),
M0=1E16)
return [source.m_rr, source.m_tt,
source.m_pp, source.m_rt,
source.m_rp, source.m_tp]
def on_load_source_button_released(self):
pwd = os.getcwd()
self.source_file = str(QtGui.QFileDialog.getOpenFileName(self, "Choose Source File", pwd))
if not self.source_file:
return
s = Source.parse(self.source_file)
self.ui.m_rr.setValue(s.m_rr)
self.ui.m_pp.setValue(s.m_pp)
self.ui.m_rp.setValue(s.m_rp)
self.ui.m_tt.setValue(s.m_tt)
self.ui.m_rt.setValue(s.m_rt)
self.ui.m_tp.setValue(s.m_tp)
self.ui.source_longitude.setValue(s.longitude)
self.ui.source_latitude.setValue(s.latitude)
self.ui.depth_slider.setValue(-s.depth_in_m / 1e3)
self.set_info()
def on_load_source_button_released(self):
pwd = os.getcwd()
self.source_file = str(
QtGui.QFileDialog.getOpenFileName(self, "Choose Source File", pwd))
if not self.source_file:
return
s = Source.parse(self.source_file)
self.ui.m_rr.setValue(s.m_rr)
self.ui.m_pp.setValue(s.m_pp)
self.ui.m_rp.setValue(s.m_rp)
self.ui.m_tt.setValue(s.m_tt)
self.ui.m_rt.setValue(s.m_rt)
self.ui.m_tp.setValue(s.m_tp)
self.ui.source_longitude.setValue(s.longitude)
self.ui.source_latitude.setValue(s.latitude)
self.ui.depth_slider.setValue(-s.depth_in_m / 1e3)
self.set_info()
def test_sliprate_convenience_methods_finite_source():
"""
Tests some convenience methods of sliprates for finite sources.
"""
src = Source(latitude=0.0, longitude=90.0)
fs = FiniteSource(pointsources=[src])
fs.set_sliprate_dirac(2.0, 5)
np.testing.assert_allclose(np.array([0.5, 0, 0, 0, 0]), src.sliprate)
src = Source(latitude=0.0, longitude=90.0)
fs = FiniteSource(pointsources=[src])
fs.set_sliprate_lp(2.0, 5, 0.1)
np.testing.assert_allclose(np.array(
[0.023291, 0.111382, 0.211022, 0.186723, 0.045481]), src.sliprate,
rtol=1E-3)
src = Source(latitude=0.0, longitude=90.0)
src.sliprate = np.ones(5)
src.dt = 0.25
fs = FiniteSource(pointsources=[src])
fs.normalize_sliprate()
np.testing.assert_allclose(np.ones(5), src.sliprate)
def test_print_regressions():
"""
Guard against a regression for printing a source object.
"""
src = Source.from_strike_dip_rake(
latitude=27.77, longitude=85.37, depth_in_m=12000.0,
M0=1e+21, strike=32., dip=62., rake=90.)
assert(str(src)) == (
"Instaseis Source:\n"
"\tOrigin Time : 1970-01-01T00:00:00.000000Z\n"
"\tLongitude : 85.4 deg\n"
"\tLatitude : 27.8 deg\n"
"\tDepth : 1.2e+01 km km\n"
"\tMoment Magnitude : 7.93\n"
"\tScalar Moment : 1.00e+21 Nm\n"
"\tMrr : 8.29e+20 Nm\n"
"\tMtt : -2.33e+20 Nm\n"
"\tMpp : -5.96e+20 Nm\n"
"\tMrt : 2.96e+20 Nm\n"
"\tMrp : 4.74e+20 Nm\n"
"\tMtp : -3.73e+20 Nm\n")
def test_parse_cmtsolutions_file(tmpdir):
"""
Tests parsing from a CMTSOLUTIONS file.
"""
filename = os.path.join(str(tmpdir), "CMTSOLUTIONS")
lines = (
" PDE 2011 8 23 17 51 4.60 37.9400 -77.9300 6.0 5.9 5.8 "
"VIRGINIA",
"event name: 201108231751A",
"time shift: 1.00",
"half duration: 1.8000",
"latitude: 37.9100",
"longitude: -77.9300",
"depth: 12.0000",
"Mrr: 4.710000e+24",
"Mtt: 3.810000e+22",
"Mpp: -4.740000e+24",
"Mrt: 3.990000e+23",
"Mrp: -8.050000e+23",
"Mtp: -1.230000e+24")
with open(filename, "wt") as fh:
fh.write("\n".join(lines))
# This is the hypocentral time + 1 seconds (the time shift in the
# CMTSOLUTION file).
origin_time = obspy.UTCDateTime(2011, 8, 23, 17, 51, 5.6)
src = Source.parse(filename)
src_params = np.array([src.latitude, src.longitude, src.depth_in_m,
src.m_rr, src.m_tt, src.m_pp, src.m_rt, src.m_rp,
src.m_tp], dtype="float64")
# Latitude will have assumed to be WGS84 and converted to geocentric
# latitude. The import machinery should do that.
np.testing.assert_allclose(src_params, np.array(
(elliptic_to_geocentric_latitude(37.91), -77.93, 12000, 4.71E17,
3.81E15, -4.74E17, 3.99E16, -8.05E16,
-1.23E17), dtype="float64"))
assert src.origin_time == origin_time
def test_parse_quakeml():
"""
Tests parsing from a QuakeML file.
"""
src = Source.parse(EVENT_FILE)
_assert_src(src)
def iterate(self):
src = Source(latitude=10, longitude=10)
rec = Receiver(latitude=20, longitude=20)
self.db.get_seismograms(source=src,
receiver=rec,
return_obspy_stream=False)
def test_event_parsing_failure_states():
"""
Tests the failures when parsing an event.
"""
# Random string.
with pytest.raises(SourceParseError) as err:
Source.parse("random strings")
assert err.value.args[0] == "Could not parse the given source."
# Empty catalog.
cat = obspy.read_events()
cat.events = []
with pytest.raises(SourceParseError) as err:
Source.parse(cat)
assert err.value.args[0] == "Event catalog contains zero events."
# Catalog with lots of events.
cat = obspy.read_events()
with pytest.raises(SourceParseError) as err:
Source.parse(cat)
assert err.value.args[0].startswith("Event catalog contains 3 events")
event = obspy.read_events(EVENT_FILE)[0]
# Event with no origin.
ev = event.copy()
ev.origins = []
with pytest.raises(SourceParseError) as err:
Source.parse(ev)
assert err.value.args[0] == "Event must contain an origin."
# Event with no focmec.
ev = event.copy()
ev.focal_mechanisms = []
with pytest.raises(SourceParseError) as err:
Source.parse(ev)
assert err.value.args[0] == "Event must contain a focal mechanism."
# Event with no moment tensor.
ev = event.copy()
ev.focal_mechanisms[0].moment_tensor = None
# Force this to None to prevent the resource id mechanism to "resurrect"
# the focal mechanism.
ev.preferred_focal_mechanism_id = None
with pytest.raises(SourceParseError) as err:
Source.parse(ev)
assert err.value.args[0] == "Event must contain a moment tensor."
def iterate(self):
src = Source(latitude=10, longitude=10)
rec = Receiver(latitude=20, longitude=20)
self.db.get_seismograms(source=src, receiver=rec)
def test_parse_QuakeML():
"""
Tests parsing from a QuakeML file.
"""
src = Source.parse(EVENT_FILE)
_assert_src(src)
def test_event_parsing_failure_states():
"""
Tests the failures when parsing an event.
"""
# Random string.
with pytest.raises(SourceParseError) as err:
Source.parse("random strings")
assert err.value.args[0] == "Could not parse the given source."
# Empty catalog.
cat = obspy.read_events()
cat.events = []
with pytest.raises(SourceParseError) as err:
Source.parse(cat)
assert err.value.args[0] == "Event catalog contains zero events."
# Catalog with lots of events.
cat = obspy.read_events()
with pytest.raises(SourceParseError) as err:
Source.parse(cat)
assert err.value.args[0].startswith("Event catalog contains 3 events")
event = obspy.read_events(EVENT_FILE)[0]
# Event with no origin.
ev = event.copy()
ev.origins = []
with pytest.raises(SourceParseError) as err:
Source.parse(ev)
assert err.value.args[0] == "Event must contain an origin."
# Event with no focmec.
ev = event.copy()
ev.focal_mechanisms = []
with pytest.raises(SourceParseError) as err:
Source.parse(ev)
assert err.value.args[0] == "Event must contain a focal mechanism."
# Event with no moment tensor.
ev = event.copy()
ev.focal_mechanisms[0].moment_tensor = None
# Force this to None to prevent the resource id mechanism to "resurrect"
# the focal mechanism.
ev.preferred_focal_mechanism_id = None
with pytest.raises(SourceParseError) as err:
Source.parse(ev)
assert err.value.args[0] == "Event must contain a moment tensor."
def test_radian_calculations():
src = Source(latitude=90.0, longitude=180.0)
assert np.isclose(src.latitude, 90.0)
assert np.isclose(src.latitude_rad, np.pi / 2.0)
assert np.isclose(src.longitude, 180.0)
assert np.isclose(src.longitude_rad, np.pi)
