MANUAL Location - Area: Appennino ligure , magnitude (ML): 1.8
2021-10-19 07:18:27 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-10-19 07:33:28

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Earthquake info - Manual location
Event - ID :211019071728
Magnitude (ML) :1.8 +/- 0.2
Origin Time :2021-10-19 07:18:27.252 (UTC)
Location : Latitude: 44.883 N, Longitude: 9.080 E
Area :Appennino ligure
Depth (km) :15.80
Distances (km) : 2.4 --- Godiasco
3.5 --- Cecima
3.8 --- Ponte Nizza
4.0 --- Pozzol Groppo
4.4 --- Rocca Susella
4.7 --- Montesegale
5.9 --- Momperone
7.1 --- Val di Nizza
7.1 --- Bagnaria
7.3 --- Rivanazzano
7.6 --- Volpedo
7.7 --- Montemarzino
8.1 --- Retorbido
8.2 --- Brignano-Frascata
8.2 --- Monleale
8.3 --- Casalnoceto
8.4 --- Casasco
9.2 --- Codevilla
9.5 --- Volpeglino
9.7 --- Gremiasco

Quality location estimate: Erh: 1.1 km, Erz: 1.7 km, Nf: 26, Gap: 115 °, Rms: 0.31


Manual location results
Station Net P arrival time P pick
err
P pick
weight
P res Nll
weight
S arrival time S pick
err
S pick
weight
S res Nll
weight
Dist.
BOBIV2021-10-19 07:18:34.7400.01800.340.602021-10-19 07:18:39.9270.2266-0.111.2635.8
GORRGU2021-10-19 07:18:34.5600.01900.021.822021-10-19 07:18:39.8840.1374-0.420.7838.6
TSAV1GU2021-10-19 07:18:34.4720.0200-0.051.702021-10-19 07:18:40.1410.04000.091.5539.6
RNCAGU2021-10-19 07:18:36.1200.0241-0.001.782021-10-19 07:18:42.3600.3607-0.440.8949.5
PCPGU2021-10-19 07:18:37.0280.0281-0.640.552021-10-19 07:18:44.7780.1303-0.430.8159.2
MSSAIV2021-10-19 07:18:40.3810.12050.101.442021-10-19 07:18:49.5380.1303-0.750.5673.8
QLNOGU2021-10-19 07:18:41.6580.1004-0.980.372021-10-19 07:18:53.9370.1604-0.031.2186.6
VAREIV2021-10-19 07:18:47.2300.05620.091.382021-10-19 07:19:01.0400.5519-1.240.39113.4
MUGIOCH2021-10-19 07:18:47.7000.0602-0.091.362021-10-19 07:19:02.3790.3778-0.790.63116.7
ROROGU2021-10-19 07:18:47.2470.08030.141.292021-10-19 07:19:01.6700.3547-0.220.96118.6
GBOSGU2021-10-19 07:18:48.8000.06020.820.082021-10-19 07:19:03.2030.16040.141.02122.5
TRAVGU2021-10-19 07:18:48.5200.06230.081.372021-10-19 07:19:03.0970.0400-1.230.33126.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
TSAV1GUEH1.401.82e-139.6191
MSSA IVHH1.718.17e-273.8151
VARE IVHH1.774.36e-2113.4348
MUGIOCHHH1.952.83e-2116.7359
RORO GUHH2.129.33e-2118.6224
GBOS GUHH1.771.81e-2122.5234
TRAV GUHH2.201.03e-1126.8304


Results of PGA, PGV, IH, spectral amplitudes (SA) values calculation
Station Net Channel PGA
(g)
PGV
(m/s)
IH 0*
(m)
IH 1*
(m)
IH 2*
(m)
Sa(T=0.10)
(g)
Sa(T=0.30)
(g)
Sa(T=1.00)
(g)
Sa(T=3.00)
(g)
Dist.
(km)
Azim.
(°)
BOB IVHHZ1.8320e-63.3875e-72.6657e-71.0999e-75.0009e-86.6744e-61.4196e-66.4773e-88.6344e-935.8114
BOB IVHHN2.9932e-65.6379e-75.1238e-72.4829e-79.1504e-88.4679e-62.9975e-61.1175e-71.4722e-835.8114
BOB IVHHE5.4847e-67.6862e-76.0118e-71.8947e-77.9481e-81.0429e-52.9901e-61.0862e-71.7880e-835.8114
GORR GUHHZ5.3908e-61.1628e-61.1083e-64.0628e-71.8395e-71.8781e-57.7072e-62.7989e-74.0419e-838.6151
GORR GUHHN9.5680e-61.9128e-61.7317e-68.0751e-73.0107e-74.1640e-58.2168e-63.8213e-75.8215e-838.6151
GORR GUHHE6.9636e-61.6279e-61.7081e-66.7068e-72.2750e-72.5107e-58.7644e-63.4651e-74.7472e-838.6151
TSAV1GUEHZ1.3903e-52.0317e-69.1726e-73.7143e-72.0194e-71.7992e-54.6395e-62.1990e-72.5921e-839.6191
TSAV1GUEHN7.1820e-61.5135e-61.5389e-66.8670e-72.3422e-72.0636e-51.0752e-53.1969e-74.1688e-839.6191
TSAV1GUEHE8.5619e-61.8497e-61.7565e-67.3933e-73.7344e-72.2754e-51.0126e-55.1015e-75.0083e-839.6191
RNCA GUHHZ3.5720e-65.9045e-72.7316e-71.2549e-75.4156e-81.1533e-51.1786e-66.8160e-81.0111e-849.5193
RNCA GUHHN2.5065e-64.6939e-74.5912e-71.5805e-78.7917e-86.1003e-62.0362e-61.1255e-71.4123e-849.5193
RNCA GUHHE3.3800e-65.2361e-73.8842e-71.2961e-76.4438e-81.0193e-52.1798e-67.8801e-81.4010e-849.5193
PCP GUHHZ1.5900e-62.1199e-72.0265e-71.1310e-73.9610e-85.1265e-61.0836e-64.6282e-86.5473e-959.2228
PCP GUHHN2.0025e-63.9876e-72.6404e-71.0853e-74.5700e-85.7388e-61.0098e-66.3960e-88.8449e-959.2228
PCP GUHHE1.9901e-63.8634e-72.6844e-71.0007e-74.0611e-85.7818e-61.0922e-65.7873e-89.7626e-959.2228
MSSA IVHHZ4.3596e-65.3857e-71.7249e-75.4248e-82.8091e-89.8743e-65.3612e-74.7221e-81.0414e-873.8151
MSSA IVHHN1.1752e-51.6047e-65.4334e-71.2482e-77.3791e-85.6695e-51.4817e-61.4038e-73.4333e-873.8151
MSSA IVHHE1.3536e-51.9821e-67.1952e-71.6164e-79.9546e-87.1443e-51.6268e-61.9094e-74.2312e-873.8151
QLNO GUHHZ1.3190e-62.2879e-71.7084e-78.2091e-83.5294e-84.1576e-67.5857e-74.4476e-86.1061e-986.6223
QLNO GUHHN1.8978e-63.7800e-72.4337e-71.1926e-77.2587e-86.3250e-68.7587e-78.1406e-89.3482e-986.6223
QLNO GUHHE2.1648e-63.9228e-72.5182e-79.3725e-84.3060e-84.5722e-68.8006e-76.0424e-88.2174e-986.6223
VARE IVHHZ2.6683e-64.1363e-72.6886e-79.8426e-83.7555e-88.4445e-61.0986e-65.4710e-81.0911e-8113.4348
VARE IVHHN2.8239e-64.9928e-73.1246e-71.3432e-75.4727e-88.3774e-61.3228e-66.4829e-81.1683e-8113.4348
VARE IVHHE2.5030e-65.4293e-73.8057e-71.6675e-77.8422e-87.4036e-61.7306e-69.6503e-81.2838e-8113.4348
MUGIOCHHHZ2.9839e-65.1250e-72.5969e-77.0632e-83.4536e-86.8705e-61.2536e-65.7337e-81.0490e-8116.7359
MUGIOCHHHN2.7188e-64.1466e-73.3256e-71.2364e-74.5742e-86.0873e-61.8732e-66.3841e-81.0649e-8116.7359
MUGIOCHHHE2.3628e-64.1054e-73.1495e-79.9567e-84.2130e-89.8849e-61.8907e-66.0947e-89.8166e-9116.7359
RORO GUHHZ1.4658e-62.1637e-71.6015e-76.7932e-82.8266e-83.7618e-67.3950e-73.8276e-85.9375e-9118.6224
RORO GUHHN2.0771e-63.6319e-72.8681e-71.0087e-74.0028e-85.5473e-69.3855e-75.4055e-89.0320e-9118.6224
RORO GUHHE3.6219e-67.0472e-75.1626e-75.4392e-73.4539e-75.5682e-62.7503e-65.2308e-72.5474e-8118.6224
GBOS GUHHZ6.1924e-71.2931e-71.2602e-76.2055e-83.0491e-82.5640e-66.5550e-73.8304e-83.2022e-9122.5234
GBOS GUHHN7.3637e-71.8636e-71.5170e-79.3284e-84.3818e-82.4577e-66.2831e-74.9170e-86.4292e-9122.5234
GBOS GUHHE6.8120e-71.5263e-71.1869e-76.9507e-82.9103e-82.1845e-64.7712e-73.9532e-84.1236e-9122.5234
TRAV GUHHZ4.8672e-67.1538e-74.4010e-79.4224e-84.8724e-81.2018e-52.0746e-67.8210e-81.8282e-8126.8304
TRAV GUHHN7.0521e-61.0834e-67.3377e-72.4244e-71.1298e-71.5141e-52.7279e-61.6260e-72.8807e-8126.8304
TRAV GUHHE9.0002e-61.7826e-68.8806e-72.2950e-71.2755e-73.1257e-53.9547e-61.9038e-73.9228e-8126.8304
*IH (Housner Intensity) calculated on the velocity spectrum (SV) between 0.1 and 0.5 s (IH0), 0.1 and 1.0 s (IH1), 0.1 and 1.5 s (IH2)

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