def par2quakeml(Par_filename,
QuakeML_filename,
rotation_axis=[0.0, 1.0, 0.0],
rotation_angle=-57.5,
origin_time="2000-01-01 00:00:00.0",
event_type="other event"):
# initialise event
ev = Event()
# open and read Par file
fid = open(Par_filename, 'r')
fid.readline()
fid.readline()
fid.readline()
fid.readline()
lat_old = 90.0 - float(fid.readline().strip().split()[0])
lon_old = float(fid.readline().strip().split()[0])
depth = float(fid.readline().strip().split()[0])
fid.readline()
Mtt_old = float(fid.readline().strip().split()[0])
Mpp_old = float(fid.readline().strip().split()[0])
Mrr_old = float(fid.readline().strip().split()[0])
Mtp_old = float(fid.readline().strip().split()[0])
Mtr_old = float(fid.readline().strip().split()[0])
Mpr_old = float(fid.readline().strip().split()[0])
# rotate event into physical domain
lat, lon = rot.rotate_lat_lon(lat_old, lon_old, rotation_axis,
rotation_angle)
Mrr, Mtt, Mpp, Mtr, Mpr, Mtp = rot.rotate_moment_tensor(
Mrr_old, Mtt_old, Mpp_old, Mtr_old, Mpr_old, Mtp_old, lat_old, lon_old,
rotation_axis, rotation_angle)
# populate event origin data
ev.event_type = event_type
ev_origin = Origin()
ev_origin.time = UTCDateTime(origin_time)
ev_origin.latitude = lat
ev_origin.longitude = lon
ev_origin.depth = depth
ev.origins.append(ev_origin)
# populte event moment tensor
ev_tensor = Tensor()
ev_tensor.m_rr = Mrr
ev_tensor.m_tt = Mtt
ev_tensor.m_pp = Mpp
ev_tensor.m_rt = Mtr
ev_tensor.m_rp = Mpr
ev_tensor.m_tp = Mtp
ev_momenttensor = MomentTensor()
ev_momenttensor.tensor = ev_tensor
ev_momenttensor.scalar_moment = np.sqrt(Mrr**2 + Mtt**2 + Mpp**2 + Mtr**2 +
Mpr**2 + Mtp**2)
ev_focalmechanism = FocalMechanism()
ev_focalmechanism.moment_tensor = ev_momenttensor
ev_focalmechanism.nodal_planes = NodalPlanes().setdefault(0, 0)
ev.focal_mechanisms.append(ev_focalmechanism)
# populate event magnitude
ev_magnitude = Magnitude()
ev_magnitude.mag = 0.667 * (np.log10(ev_momenttensor.scalar_moment) - 9.1)
ev_magnitude.magnitude_type = 'Mw'
ev.magnitudes.append(ev_magnitude)
# write QuakeML file
cat = Catalog()
cat.append(ev)
cat.write(QuakeML_filename, format="quakeml")
# clean up
fid.close()
def par2quakeml(Par_filename, QuakeML_filename, rotation_axis=[0.0, 1.0, 0.0],
rotation_angle=-57.5, origin_time="2000-01-01 00:00:00.0",
event_type="other event"):
# initialise event
ev = Event()
# open and read Par file
fid = open(Par_filename, 'r')
fid.readline()
fid.readline()
fid.readline()
fid.readline()
lat_old = 90.0 - float(fid.readline().strip().split()[0])
lon_old = float(fid.readline().strip().split()[0])
depth = float(fid.readline().strip().split()[0])
fid.readline()
Mtt_old = float(fid.readline().strip().split()[0])
Mpp_old = float(fid.readline().strip().split()[0])
Mrr_old = float(fid.readline().strip().split()[0])
Mtp_old = float(fid.readline().strip().split()[0])
Mtr_old = float(fid.readline().strip().split()[0])
Mpr_old = float(fid.readline().strip().split()[0])
# rotate event into physical domain
lat, lon = rot.rotate_lat_lon(lat_old, lon_old, rotation_axis,
rotation_angle)
Mrr, Mtt, Mpp, Mtr, Mpr, Mtp = rot.rotate_moment_tensor(
Mrr_old, Mtt_old, Mpp_old, Mtr_old, Mpr_old, Mtp_old, lat_old, lon_old,
rotation_axis, rotation_angle)
# populate event origin data
ev.event_type = event_type
ev_origin = Origin()
ev_origin.time = UTCDateTime(origin_time)
ev_origin.latitude = lat
ev_origin.longitude = lon
ev_origin.depth = depth
ev.origins.append(ev_origin)
# populte event moment tensor
ev_tensor = Tensor()
ev_tensor.m_rr = Mrr
ev_tensor.m_tt = Mtt
ev_tensor.m_pp = Mpp
ev_tensor.m_rt = Mtr
ev_tensor.m_rp = Mpr
ev_tensor.m_tp = Mtp
ev_momenttensor = MomentTensor()
ev_momenttensor.tensor = ev_tensor
ev_momenttensor.scalar_moment = np.sqrt(Mrr ** 2 + Mtt ** 2 + Mpp ** 2 +
Mtr ** 2 + Mpr ** 2 + Mtp ** 2)
ev_focalmechanism = FocalMechanism()
ev_focalmechanism.moment_tensor = ev_momenttensor
ev_focalmechanism.nodal_planes = NodalPlanes().setdefault(0, 0)
ev.focal_mechanisms.append(ev_focalmechanism)
# populate event magnitude
ev_magnitude = Magnitude()
ev_magnitude.mag = 0.667 * (np.log10(ev_momenttensor.scalar_moment) - 9.1)
ev_magnitude.magnitude_type = 'Mw'
ev.magnitudes.append(ev_magnitude)
# write QuakeML file
cat = Catalog()
cat.append(ev)
cat.write(QuakeML_filename, format="quakeml")
# clean up
fid.close()
def test_RotateMomentTensor():
"""
Tests the moment tensor rotations.
"""
# A full rotation should not change anything.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor(
1, 2, 3, 4, 5, 6, 7, 8, [9, 10, 11], 360)
np.testing.assert_almost_equal(Mrr, 1.0, 6)
np.testing.assert_almost_equal(Mtt, 2.0, 6)
np.testing.assert_almost_equal(Mpp, 3.0, 6)
np.testing.assert_almost_equal(Mrt, 4.0, 6)
np.testing.assert_almost_equal(Mrp, 5.0, 6)
np.testing.assert_almost_equal(Mtp, 6.0, 6)
# The following ones are tested against a well proven Matlab script by
# Andreas Fichtner.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor(
-0.704, 0.071, 0.632, 0.226, -0.611, 3.290, rotations.colat2lat(26.08),
-21.17, [0, 1, 0], 57.5)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[-0.70400000, 2.04919171, -1.34619171, 0.02718681, -0.65089007,
2.83207047]
np.testing.assert_almost_equal(Mrr, Mrr_new, 6)
np.testing.assert_almost_equal(Mtt, Mtt_new, 6)
np.testing.assert_almost_equal(Mpp, Mpp_new, 6)
np.testing.assert_almost_equal(Mrt, Mrt_new, 6)
np.testing.assert_almost_equal(Mrp, Mrp_new, 6)
np.testing.assert_almost_equal(Mtp, Mtp_new, 6)
# Another example.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor(
-0.818, -1.300, 2.120, 1.720, 2.290, -0.081,
rotations.colat2lat(53.51), -9.87,
[np.sqrt(2) / 2, -np.sqrt(2) / 2, 0], -31.34)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[-0.81800000, -0.69772178, 1.51772178, 2.55423451, 1.29552541,
1.30522545]
np.testing.assert_almost_equal(Mrr, Mrr_new, 6)
np.testing.assert_almost_equal(Mtt, Mtt_new, 6)
np.testing.assert_almost_equal(Mpp, Mpp_new, 6)
np.testing.assert_almost_equal(Mrt, Mrt_new, 6)
np.testing.assert_almost_equal(Mrp, Mrp_new, 6)
np.testing.assert_almost_equal(Mtp, Mtp_new, 6)
# The same as before, but with a non-normalized axis. Should work just
# as well.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor(
-0.818, -1.300, 2.120, 1.720, 2.290, -0.081,
rotations.colat2lat(53.51), -9.87, [11.12, -11.12, 0], -31.34)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[-0.81800000, -0.69772178, 1.51772178, 2.55423451, 1.29552541,
1.30522545]
np.testing.assert_almost_equal(Mrr, Mrr_new, 6)
np.testing.assert_almost_equal(Mtt, Mtt_new, 6)
np.testing.assert_almost_equal(Mpp, Mpp_new, 6)
np.testing.assert_almost_equal(Mrt, Mrt_new, 6)
np.testing.assert_almost_equal(Mrp, Mrp_new, 6)
np.testing.assert_almost_equal(Mtp, Mtp_new, 6)
# One more.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor(
0.952, -1.030, 0.076, 0.226, -0.040, -0.165,
rotations.colat2lat(63.34), 55.80,
[np.sqrt(3) / 3, -np.sqrt(3) / 3, -np.sqrt(3) / 3], 123.45)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[0.95200000, -0.41458722, -0.53941278, -0.09170855, 0.21039378,
0.57370606]
np.testing.assert_almost_equal(Mrr, Mrr_new, 6)
np.testing.assert_almost_equal(Mtt, Mtt_new, 6)
np.testing.assert_almost_equal(Mpp, Mpp_new, 6)
np.testing.assert_almost_equal(Mrt, Mrt_new, 6)
np.testing.assert_almost_equal(Mrp, Mrp_new, 6)
np.testing.assert_almost_equal(Mtp, Mtp_new, 6)
def test_RotateMomentTensor(self):
"""
Tests the moment tensor rotations.
"""
# A full rotation should not change anything.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor(1, 2, 3,
4, 5, 6, 7, 8, [9, 10, 11], 360)
self.assertAlmostEqual(Mrr, 1.0, 6)
self.assertAlmostEqual(Mtt, 2.0, 6)
self.assertAlmostEqual(Mpp, 3.0, 6)
self.assertAlmostEqual(Mrt, 4.0, 6)
self.assertAlmostEqual(Mrp, 5.0, 6)
self.assertAlmostEqual(Mtp, 6.0, 6)
# The following ones are tested against a well proven Matlab script by
# Andreas Fichtner.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor( \
-0.704, 0.071, 0.632, 0.226, -0.611, 3.290,
rotations.colat2lat(26.08), -21.17,
[0, 1, 0], 57.5)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[-0.70400000, 2.04919171, -1.34619171, 0.02718681, -0.65089007,
2.83207047]
self.assertAlmostEqual(Mrr, Mrr_new, 6)
self.assertAlmostEqual(Mtt, Mtt_new, 6)
self.assertAlmostEqual(Mpp, Mpp_new, 6)
self.assertAlmostEqual(Mrt, Mrt_new, 6)
self.assertAlmostEqual(Mrp, Mrp_new, 6)
self.assertAlmostEqual(Mtp, Mtp_new, 6)
# Another example.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor( \
-0.818, -1.300, 2.120, 1.720, 2.290, -0.081,
rotations.colat2lat(53.51), -9.87,
[np.sqrt(2) / 2, -np.sqrt(2) / 2, 0], -31.34)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[-0.81800000, -0.69772178, 1.51772178, 2.55423451, 1.29552541,
1.30522545]
self.assertAlmostEqual(Mrr, Mrr_new, 6)
self.assertAlmostEqual(Mtt, Mtt_new, 6)
self.assertAlmostEqual(Mpp, Mpp_new, 6)
self.assertAlmostEqual(Mrt, Mrt_new, 6)
self.assertAlmostEqual(Mrp, Mrp_new, 6)
self.assertAlmostEqual(Mtp, Mtp_new, 6)
# The same as before, but with a non-normalized axis. Should work just
# as well.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor( \
-0.818, -1.300, 2.120, 1.720, 2.290, -0.081,
rotations.colat2lat(53.51), -9.87,
[11.12, -11.12, 0], -31.34)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[-0.81800000, -0.69772178, 1.51772178, 2.55423451, 1.29552541,
1.30522545]
self.assertAlmostEqual(Mrr, Mrr_new, 6)
self.assertAlmostEqual(Mtt, Mtt_new, 6)
self.assertAlmostEqual(Mpp, Mpp_new, 6)
self.assertAlmostEqual(Mrt, Mrt_new, 6)
self.assertAlmostEqual(Mrp, Mrp_new, 6)
self.assertAlmostEqual(Mtp, Mtp_new, 6)
# One more.
Mrr, Mtt, Mpp, Mrt, Mrp, Mtp = rotations.rotate_moment_tensor( \
0.952, -1.030, 0.076, 0.226, -0.040, -0.165,
rotations.colat2lat(63.34), 55.80,
[np.sqrt(3) / 3, -np.sqrt(3) / 3, -np.sqrt(3) / 3], 123.45)
Mrr_new, Mtt_new, Mpp_new, Mrt_new, Mrp_new, Mtp_new = \
[0.95200000, -0.41458722, -0.53941278, -0.09170855, 0.21039378,
0.57370606]
self.assertAlmostEqual(Mrr, Mrr_new, 6)
self.assertAlmostEqual(Mtt, Mtt_new, 6)
self.assertAlmostEqual(Mpp, Mpp_new, 6)
self.assertAlmostEqual(Mrt, Mrt_new, 6)
self.assertAlmostEqual(Mrp, Mrp_new, 6)
self.assertAlmostEqual(Mtp, Mtp_new, 6)
