MANUAL Location - Area: Valle del Trebbia , magnitude (ML): 2.0
2021-10-20 00:09:23 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2021-10-20 06:47:26

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Earthquake info - Manual location
Event - ID :211020000858
Magnitude (ML) :2.0 +/- 0.2
Origin Time :2021-10-20 00:09:23.482 (UTC)
Location : Latitude: 44.707 N, Longitude: 9.452 E
Area :Valle del Trebbia
Depth (km) :8.77
Distances (km) : 5.3 --- Coli
5.4 --- Corte Brugnatella
7.7 --- Ferriere
8.5 --- Cerignale
8.6 --- Bobbio
9.4 --- Farini
13.2 --- Ottone
13.7 --- Zerba
13.9 --- Brallo di Pregola
14.8 --- Bettola
16.9 --- Menconico
16.9 --- Gorreto
17.6 --- Santo Stefano d Aveto
17.7 --- Romagnese
18.2 --- Santa Margherita di Staffora
18.7 --- Travo
19.6 --- Pecorara
19.9 --- Morfasso
19.9 --- Rovegno
20.6 --- Rezzoaglio

Quality location estimate: Erh: 1 km, Erz: 1.6 km, Nf: 52, Gap: 69 °, Rms: 0.30


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.
BOBIV2021-10-20 00:09:25.3400.0040-0.800.342021-10-20 00:09:26.5800.0230-1.730.0111.8
GORRGU2021-10-20 00:09:27.4100.0090-0.031.772021-10-20 00:09:30.1880.2847-0.420.9019.2
TSAV1GU2021-10-20 00:09:31.1840.02000.031.762021-10-20 00:09:36.7400.0400-0.350.9340.7
MSSAIV2021-10-20 00:09:31.5600.02310.021.762021-10-20 00:09:38.1700.13640.271.1544.8
RNCAGU2021-10-20 00:09:32.3200.02510.061.692021-10-20 00:09:38.8000.1474-0.051.4348.4
GRAMGU2021-10-20 00:09:33.5600.02710.091.592021-10-20 00:09:41.7740.04000.860.4155.0
PCPGU2021-10-20 00:09:36.4010.0381-0.131.452021-10-20 00:09:47.2160.04001.020.2874.7
PLMAGU2021-10-20 00:09:37.2130.0200-0.241.192021-10-20 00:09:47.7550.1002-0.430.8880.2
EQUIGU2021-10-20 00:09:37.8000.1818-0.121.352021-10-20 00:09:48.4200.2496-0.171.1582.4
SARMGU2021-10-20 00:09:40.2600.0482-0.061.502021-10-20 00:09:52.6880.3097-0.141.0995.6
QLNOGU2021-10-20 00:09:40.8000.07330.271.142021-10-20 00:09:53.4210.55490.380.8397.9
GSCLGU2021-10-20 00:09:41.5900.0200-0.041.502021-10-20 00:09:55.9420.04000.490.8698.8
CANOGU2021-10-20 00:09:42.9800.05620.430.872021-10-20 00:09:56.4400.4158-0.011.01111.6
CARDGU2021-10-20 00:09:42.8640.02000.231.222021-10-20 00:09:56.2890.0400-0.630.64111.9
BDIIV2021-10-20 00:09:44.6620.02001.080.222021-10-20 00:09:58.1000.3587-0.450.82116.2
MDIIV2021-10-20 00:09:45.5700.05920.011.422021-10-20 00:10:02.1600.6749-0.640.62120.3
TRESNI2021-10-20 00:09:45.8800.0602-0.061.392021-10-20 00:10:02.5900.3848-0.520.76120.7
MAIMGU2021-10-20 00:09:44.9500.06130.680.592021-10-20 00:09:59.3550.0400-0.350.97121.3
ZCCAIV2021-10-20 00:09:48.4260.06431.160.002021-10-20 00:10:08.4930.04003.260.00127.5
ROROGU2021-10-20 00:09:45.2500.06530.490.822021-10-20 00:10:00.1360.1604-0.081.14128.7
GBOSGU2021-10-20 00:09:46.8400.07030.450.882021-10-20 00:10:02.6900.0400-0.241.06138.3
MUGIOCH2021-10-20 00:09:47.6750.0693-0.610.622021-10-20 00:10:05.5980.0400-1.580.00139.1
PIIIV2021-10-20 00:09:47.3900.07030.101.352021-10-20 00:10:02.9440.2005-2.070.00139.2
MGROGU2021-10-20 00:09:48.1800.11950.001.342021-10-20 00:10:05.8950.0400-0.420.88150.4
IMIGU2021-10-20 00:09:48.1580.08030.261.162021-10-20 00:10:05.3270.1604-0.600.69152.6
TRAVGU2021-10-20 00:09:50.8100.08040.660.652021-10-20 00:10:10.5010.1303-0.131.03161.2


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
GORR GUHH1.922.38e+019.2229
TSAV1GUEH2.067.96e-140.7246
RNCA GUHH1.782.98e-148.4237
GRAM GUHH1.743.75e-155.0116
PLMA GUHH2.061.87e-180.2156
EQUI GUHH1.748.71e-282.4137
SARM GUEH2.212.17e-195.6127
QLNO GUHH1.705.32e-297.9244
GSCL GUHH1.776.09e-298.8113
CANO GUHH2.191.19e-1111.6240
CARD GUHH2.492.33e-1111.9132
BDI IVHH2.331.89e-1116.2128
MAIM GUHH2.291.08e-1121.3137
ZCCA IVHH1.894.29e-2127.5108
RORO GUHH2.076.67e-2128.7239
GBOS GUHH1.982.18e-2138.3249
MUGIOCHHH2.364.64e-2139.1347
PII IVHH1.953.88e-2139.2142
MGRO GUHH1.872.63e-2150.4241
IMI GUHH1.923.78e-2152.6235
TRAV GUHH2.033.63e-2161.2304


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 IVHHZ1.8554e-32.3938e-41.2098e-42.9730e-52.0375e-54.8399e-36.7291e-43.4964e-55.1463e-611.8357
BOB IVHHN1.7752e-34.8183e-42.4287e-49.7817e-55.5268e-54.3257e-31.0925e-38.5336e-51.3582e-511.8357
BOB IVHHE4.1147e-34.9772e-41.6229e-44.2086e-52.1584e-55.6646e-37.6209e-44.1642e-51.0456e-511.8357
GORR GUHHZ4.5826e-44.6555e-51.3102e-56.6102e-65.2470e-63.3044e-46.4105e-56.3311e-65.2319e-719.2229
GORR GUHHN2.9495e-43.8454e-51.8847e-57.5450e-64.8908e-64.9171e-48.7978e-56.4464e-69.8937e-719.2229
GORR GUHHE1.6667e-42.9785e-51.9945e-57.6186e-63.6764e-63.9304e-48.3452e-54.9007e-66.9304e-719.2229
TSAV1GUEHZ1.8892e-53.0327e-62.8186e-61.1489e-65.3154e-75.5609e-51.1890e-56.7114e-78.8067e-840.7246
TSAV1GUEHN3.1657e-56.0885e-65.4607e-61.7535e-68.2169e-71.0547e-42.5206e-51.1575e-61.5234e-740.7246
TSAV1GUEHE3.8664e-59.7855e-68.2407e-62.2598e-61.0911e-69.1885e-55.9568e-51.4842e-62.3578e-740.7246
MSSA IVHHZ5.0498e-56.7223e-63.5723e-61.3831e-66.6739e-71.7398e-41.1415e-59.2209e-71.3541e-744.8173
MSSA IVHHN3.1681e-44.9041e-51.5397e-53.5140e-62.1933e-61.5667e-33.8045e-54.0634e-61.0115e-644.8173
MSSA IVHHE3.7185e-46.1396e-52.1532e-55.0705e-63.4716e-61.9436e-36.1474e-56.6540e-61.3745e-644.8173
RNCA GUHHZ1.3667e-52.0911e-61.3767e-64.4555e-72.1686e-73.4632e-56.4742e-63.0107e-74.6293e-848.4237
RNCA GUHHN1.6148e-53.4109e-62.2154e-66.5361e-72.8958e-75.9515e-58.5635e-64.3489e-78.6011e-848.4237
RNCA GUHHE2.3627e-53.6724e-62.9723e-68.9717e-73.9352e-76.5451e-51.7252e-56.0250e-79.5061e-848.4237
GRAM GUHHZ1.1907e-51.8957e-61.3903e-64.2873e-71.7982e-71.6375e-59.5808e-62.9695e-75.2822e-855.0116
GRAM GUHHN1.5781e-53.9268e-63.1993e-61.2294e-65.0054e-74.4060e-51.7629e-57.1414e-71.0658e-755.0116
GRAM GUHHE2.1516e-55.1715e-64.2009e-61.1549e-64.7055e-74.2869e-52.3829e-56.8188e-71.1146e-755.0116
PCP GUHHZ2.1124e-64.2453e-73.9532e-72.0088e-77.2477e-86.1996e-62.3080e-68.8521e-81.0884e-874.7256
PCP GUHHN2.8322e-65.7420e-75.3104e-72.2517e-78.4964e-89.7692e-62.8691e-61.1312e-71.7181e-874.7256
PCP GUHHE2.9575e-65.8641e-74.6835e-72.2780e-78.5138e-81.0421e-52.4311e-61.1031e-71.7588e-874.7256
PLMA GUHHZ6.4406e-61.4085e-61.4446e-67.9475e-72.8212e-71.8798e-55.7100e-64.3752e-74.8353e-880.2156
PLMA GUHHN8.3738e-61.9520e-61.6414e-66.1505e-72.3917e-72.7776e-56.8546e-63.3261e-74.6607e-880.2156
PLMA GUHHE8.0600e-62.0187e-61.8476e-66.5666e-72.5206e-72.3916e-51.0831e-53.3824e-75.8251e-880.2156
EQUI GUHHZ2.8830e-65.8724e-74.5174e-71.7644e-77.0346e-86.3351e-63.1633e-69.0149e-81.3852e-882.4137
EQUI GUHHN2.6838e-65.6878e-76.0436e-72.6718e-71.0569e-77.5906e-63.8174e-61.3701e-71.9847e-882.4137
EQUI GUHHE3.8165e-68.9198e-78.6999e-72.9766e-71.0867e-79.5819e-66.9538e-61.4664e-72.4420e-882.4137
SARM GUEHZ1.7409e-65.7540e-74.2720e-71.9490e-79.1076e-85.6396e-62.2259e-61.1149e-71.3691e-895.6127
SARM GUEHN3.7298e-61.2847e-61.3129e-61.3197e-64.2668e-75.7743e-66.4975e-65.6196e-75.8193e-895.6127
SARM GUEHE2.3877e-66.2645e-75.8397e-73.5287e-71.8713e-74.9394e-63.7627e-62.1291e-72.4095e-895.6127
QLNO GUHHZ2.0558e-65.1354e-73.7554e-71.6736e-76.7319e-87.1354e-61.2010e-68.6560e-81.3605e-897.9244
QLNO GUHHN2.7579e-66.6345e-75.5919e-72.0602e-78.5344e-81.0281e-52.2045e-61.2603e-71.6363e-897.9244
QLNO GUHHE3.0197e-66.7756e-74.6377e-71.6861e-78.0085e-86.2753e-61.2665e-61.2577e-71.5086e-897.9244
GSCL GUHHZ1.3201e-62.6665e-72.3138e-79.1178e-83.9037e-83.0174e-61.2174e-65.0873e-86.5935e-998.8113
GSCL GUHHN1.1414e-63.6931e-74.1131e-72.5873e-71.0680e-71.9094e-62.1357e-61.3645e-71.3557e-898.8113
GSCL GUHHE1.2464e-63.8430e-73.9994e-72.3123e-78.4311e-82.5764e-62.4655e-61.0152e-71.2987e-898.8113
CANO GUHHZ3.4051e-66.5600e-76.3845e-71.6736e-79.8563e-81.2162e-54.3639e-61.3950e-71.6163e-8111.6240
CANO GUHHN3.0605e-61.0308e-61.0728e-64.1427e-71.9152e-78.5222e-68.8974e-62.3767e-73.1790e-8111.6240
CANO GUHHE4.5841e-61.2610e-61.1038e-63.5154e-71.8116e-71.0191e-57.3632e-62.9839e-73.0868e-8111.6240
CARD GUHHZ4.1283e-61.0636e-68.2030e-74.6981e-71.9227e-71.2444e-54.8562e-62.2744e-73.0653e-8111.9132
CARD GUHHN9.3689e-62.2693e-61.8515e-68.8568e-74.5419e-73.0878e-58.4821e-65.1127e-76.4466e-8111.9132
CARD GUHHE1.0199e-52.3457e-62.2502e-61.0969e-63.6189e-72.3509e-51.0851e-54.7610e-76.8056e-8111.9132
BDI IVHHZ2.3827e-67.3231e-76.3586e-72.5504e-71.0233e-76.7769e-64.7185e-61.4764e-72.1220e-8116.2128
BDI IVHHN4.7869e-61.3511e-61.0853e-66.7136e-73.4054e-71.2580e-56.1926e-63.7864e-74.4928e-8116.2128
BDI IVHHE4.6931e-61.6684e-61.5823e-68.6543e-73.7197e-71.3051e-51.0651e-54.7565e-74.6919e-8116.2128
MDI IVHHZ2.2447e-66.2697e-73.9865e-71.3966e-75.7898e-85.6749e-62.3288e-68.5766e-81.3470e-8120.310
MDI IVHHN3.5634e-68.5118e-77.1469e-75.1622e-71.8583e-78.5752e-62.3301e-62.6443e-73.1877e-8120.310
MDI IVHHE4.8951e-61.6285e-61.0919e-66.5101e-72.8823e-71.3181e-56.0156e-63.7804e-73.9983e-8120.310
MAIM GUHHZ2.1885e-68.0312e-76.5411e-72.9162e-71.1358e-75.0317e-65.2920e-61.4450e-71.9975e-8121.3137
MAIM GUHHN2.5722e-69.8917e-78.4892e-74.9623e-71.7764e-78.1528e-64.3026e-62.2421e-72.5790e-8121.3137
MAIM GUHHE1.3470e-64.1870e-74.2610e-72.0779e-78.7340e-82.9832e-62.7219e-61.1048e-71.3267e-8121.3137
ZCCA IVHHZ1.5657e-63.6417e-72.8769e-71.4185e-75.1594e-83.8400e-61.1943e-66.6144e-89.3697e-9127.5108
ZCCA IVHHN1.0011e-61.9194e-71.6743e-78.9540e-84.1030e-83.4743e-66.5630e-75.1118e-84.7679e-9127.5108
ZCCA IVHHE9.0461e-72.5030e-72.5838e-71.5609e-75.2697e-82.2259e-61.4298e-66.5615e-87.4621e-9127.5108
RORO GUHHZ2.0071e-63.9599e-73.1796e-71.1995e-74.9007e-85.9603e-61.3587e-67.1095e-81.1675e-8128.7239
RORO GUHHN2.0367e-64.9438e-73.4223e-78.9908e-84.9357e-87.0167e-61.8279e-66.9002e-81.0850e-8128.7239
RORO GUHHE5.0356e-67.4795e-76.4786e-75.8260e-73.5112e-74.8985e-62.9455e-64.8976e-72.8460e-8128.7239
GBOS GUHHZ7.3351e-71.7974e-71.6343e-79.1700e-83.7110e-82.7128e-68.1158e-74.6187e-85.9682e-9138.3249
GBOS GUHHN6.7689e-71.5478e-71.5230e-78.0354e-83.7366e-81.5784e-68.4031e-75.4089e-85.7132e-9138.3249
GBOS GUHHE5.9678e-71.9438e-71.4731e-78.7615e-83.6349e-81.9508e-66.8594e-74.3106e-84.7023e-9138.3249
MUGIOCHHHZ9.1561e-72.8609e-71.7988e-78.1514e-83.7597e-83.3155e-66.6566e-75.5756e-86.1823e-9139.1347
MUGIOCHHHN1.1718e-63.1963e-71.9897e-71.3659e-77.9656e-82.1844e-68.5605e-71.0245e-79.1517e-9139.1347
MUGIOCHHHE1.2262e-63.7595e-72.5210e-71.3859e-76.0649e-82.7200e-61.0587e-68.6786e-81.0228e-8139.1347
PII IVHHZ1.0027e-63.2067e-72.6255e-71.0159e-74.0538e-83.4764e-61.5495e-65.4679e-88.2534e-9139.2142
PII IVHHN1.1973e-63.2118e-73.0240e-71.1711e-74.3539e-82.2026e-61.3538e-66.2264e-88.7239e-9139.2142
PII IVHHE1.0749e-63.6254e-73.0426e-71.2646e-75.1260e-82.1305e-62.0602e-67.1525e-81.2296e-8139.2142
MGRO GUHHZ6.2646e-71.1942e-71.2030e-74.9833e-82.1784e-81.8152e-65.7067e-73.1379e-83.4210e-9150.4241
MGRO GUHHN6.0132e-71.4392e-71.4698e-76.7610e-82.8714e-81.6018e-61.0646e-63.7675e-84.7093e-9150.4241
MGRO GUHHE7.0853e-71.9794e-71.4376e-76.3395e-82.7773e-81.7472e-68.1392e-73.8553e-84.6159e-9150.4241
IMI GUHHZ9.0252e-72.4758e-71.8487e-71.1483e-79.3034e-83.4553e-68.9693e-71.2654e-79.9728e-9152.6235
IMI GUHHN1.7409e-64.3290e-73.2106e-71.5458e-75.7245e-83.7550e-62.1691e-66.4980e-81.1595e-8152.6235
IMI GUHHE1.0816e-63.0838e-72.5907e-78.1328e-83.7206e-83.1691e-61.4857e-65.0934e-87.8185e-9152.6235
TRAV GUHHZ9.8418e-71.6298e-71.1688e-73.5330e-81.5837e-83.8957e-66.6237e-72.3254e-83.8779e-9161.2304
TRAV GUHHN8.9641e-71.3516e-71.1289e-73.9170e-81.6501e-83.7000e-65.9619e-72.1941e-83.2766e-9161.2304
TRAV GUHHE5.6868e-71.2536e-71.0742e-74.0485e-81.7016e-81.6717e-66.1018e-72.3793e-83.1774e-9161.2304
*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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