MANUAL Location - Area: Alpi Cozie , magnitude (ML): 1.0
2025-10-20 23:38:07 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-21 06:49:07

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Earthquake info - Manual location
Event - ID :251020233727
Magnitude (ML) :1.0 +/- 0.2
Origin Time :2025-10-20 23:38:07.917 (UTC)
Location : Latitude: 44.471 N, Longitude: 6.935 E
Area :Alpi Cozie
Depth (km) :4.37
Distances (km) : 4.4 --- Acceglio
8.2 --- Argentera
9.7 --- Prazzo
11.8 --- Canosio
12.7 --- Marmora
13.9 --- Bellino
14.5 --- Elva
15.7 --- Stroppo
16.1 --- Pietraporzio
17.1 --- Casteldelfino
18.4 --- Sambuco
18.4 --- Pontechianale
19.5 --- Celle di Macra
19.6 --- Macra
23.0 --- Castelmagno
23.5 --- Sampeyre
25.5 --- San Damiano Macra
26.2 --- Vinadio
27.9 --- Cartignano
28.0 --- Pradleves

Quality location estimate: Erh: 0.9 km, Erz: 1.1 km, Nf: 38, Gap: 111 °, Rms: 0.23


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.
SURFFR2025-10-20 23:38:10.4400.00500.001.472025-10-20 23:38:11.9800.0380-0.360.6810.7
PZZGU2025-10-20 23:38:11.8600.00800.271.252025-10-20 23:38:14.2000.0471-0.091.2316.0
VINDIV2025-10-20 23:38:13.3260.0200-0.021.462025-10-20 23:38:16.8290.0400-0.300.8026.6
ISOFR2025-10-20 23:38:14.7900.01700.341.082025-10-20 23:38:18.7710.1825-0.121.1533.6
STVGU2025-10-20 23:38:15.7500.05420.311.162025-10-20 23:38:20.5400.1203-0.101.2140.3
ENRGU2025-10-20 23:38:16.7550.02000.101.372025-10-20 23:38:22.7380.10020.051.3347.2
OGAGFR2025-10-20 23:38:17.9900.02001.080.012025-10-20 23:38:23.2380.0400-0.061.2747.4
BHBGU2025-10-20 23:38:17.1900.02410.221.292025-10-20 23:38:23.1590.1454-0.161.0948.3
RRLGU2025-10-20 23:38:17.8450.02000.061.412025-10-20 23:38:24.7800.15540.011.2551.7
TURFFR2025-10-20 23:38:20.6260.02000.360.982025-10-20 23:38:28.8400.3628-0.140.9266.2
MVIFFR2025-10-20 23:38:20.4510.0200-0.011.372025-10-20 23:38:29.0150.1002-0.460.6366.3
SAOFFR2025-10-20 23:38:21.6660.02000.251.232025-10-20 23:38:30.2970.2196-0.530.5673.2
GBOSGU2025-10-20 23:38:21.9600.03910.400.852025-10-20 23:38:31.3790.10020.430.7676.5
ESCAFR2025-10-20 23:38:22.9220.02000.311.092025-10-20 23:38:32.8800.0400-0.071.1779.5
RSPGU2025-10-20 23:38:22.7500.04010.470.652025-10-20 23:38:31.8200.3177-0.630.4979.8
MLIGIV2025-10-20 23:38:22.2870.0200-0.450.582025-10-20 23:38:32.2980.0400-0.780.2680.4
MGROGU2025-10-20 23:38:23.2720.0200-0.071.272025-10-20 23:38:33.4800.0400-0.660.3884.5
ROROGU2025-10-20 23:38:25.4000.05020.131.322025-10-20 23:38:37.0410.1303-0.250.9198.6
IMIGU2025-10-20 23:38:25.5040.02000.161.302025-10-20 23:38:37.4500.5119-0.060.7798.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.		 Dist. (km) Azimuth
PZZ GUHH0.804.25e-116.075
ISO FRHH0.634.29e-233.6164
STV GUHH0.944.17e-240.3129
ENR GUHH1.149.88e-247.2125
OGAG FRHH0.954.59e-247.4319
BHB GUHH0.873.28e-248.333
RRL GUHH0.872.12e-251.7347
TURF FRHH1.012.61e-266.2146
SAOF FRHH1.203.24e-273.2137
ESCA FRHH1.061.93e-279.5154
RSP GUHH0.911.47e-279.819
MGRO GUHH1.081.77e-284.5124
RORO GUHH1.432.78e-298.6114
IMI GUHH1.373.24e-298.7129


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.
(°)
PZZ GUHHZ2.8505e-55.5882e-62.9835e-61.1392e-65.6136e-71.1084e-41.7116e-58.6710e-71.2020e-716.075
PZZ GUHHN5.0593e-59.5350e-63.8802e-61.5442e-66.9328e-71.2033e-41.3239e-58.9474e-71.8981e-716.075
PZZ GUHHE3.1592e-55.8003e-63.1707e-61.3506e-66.0898e-79.2517e-51.6935e-57.4956e-71.3702e-716.075
ISO FRHHZ4.2150e-66.4148e-72.8149e-78.8692e-84.3467e-88.8024e-68.0079e-77.0278e-81.3755e-833.6164
ISO FRHHN4.3764e-65.5977e-72.6390e-77.5029e-84.0773e-88.1212e-69.5257e-76.7409e-81.2675e-833.6164
ISO FRHHE6.7086e-67.7089e-73.7165e-71.1381e-74.9435e-81.5939e-51.7423e-68.7570e-81.7781e-833.6164
STV GUHHZ5.9488e-67.2917e-73.6174e-71.4934e-77.4886e-81.1057e-51.3195e-61.1272e-71.5391e-840.3129
STV GUHHN5.0970e-66.4597e-74.0442e-71.5813e-78.9816e-88.8873e-61.6480e-61.1912e-71.8411e-840.3129
STV GUHHE4.4897e-66.5366e-73.9717e-71.5826e-77.1435e-81.5160e-51.5434e-69.0197e-81.3958e-840.3129
ENR GUHHZ1.5193e-51.7334e-64.5741e-72.4602e-71.3088e-71.7758e-51.4677e-61.8031e-73.4947e-847.2125
ENR GUHHN2.9702e-52.8194e-69.6685e-73.6697e-72.0259e-74.3811e-56.2902e-62.8675e-75.4459e-847.2125
ENR GUHHE2.5952e-52.5415e-68.7238e-72.5610e-71.1880e-73.1482e-55.3064e-62.2257e-75.3524e-847.2125
OGAG FRHHZ6.8599e-71.5865e-71.6246e-79.0662e-84.5341e-81.7200e-67.1219e-74.5295e-85.5136e-947.4319
OGAG FRHHN6.5664e-71.5377e-71.5017e-77.6495e-83.5494e-82.0439e-67.9111e-74.2908e-84.7749e-947.4319
OGAG FRHHE1.1338e-64.1554e-73.3315e-71.8507e-77.8594e-81.4689e-61.7037e-69.0837e-81.1611e-847.4319
BHB GUHHZ3.5203e-65.1574e-72.8434e-77.5791e-84.3024e-81.3237e-51.0828e-67.3817e-81.2268e-848.333
BHB GUHHN1.9944e-64.4450e-72.9336e-78.4850e-84.6020e-86.7762e-61.8986e-66.8550e-89.9268e-948.333
BHB GUHHE2.6856e-63.4632e-72.5657e-76.9273e-83.4178e-86.3615e-61.7539e-65.3255e-87.5717e-948.333
RRL GUHHZ9.8979e-71.4712e-79.2480e-84.7437e-82.4347e-82.5759e-65.6838e-73.5533e-83.5756e-951.7347
RRL GUHHN1.3401e-62.5817e-71.7436e-76.6807e-83.1424e-85.0914e-66.8073e-74.7188e-87.9158e-951.7347
RRL GUHHE1.1578e-61.8396e-71.6608e-79.7663e-87.1951e-83.2357e-66.7434e-71.1234e-71.3047e-851.7347
TURF FRHHZ1.2089e-62.3378e-72.1021e-77.0792e-83.1675e-83.3828e-61.1332e-63.9333e-85.6244e-966.2146
TURF FRHHN2.7187e-64.7400e-73.2558e-77.7148e-84.0695e-88.8341e-61.2867e-66.1780e-81.0835e-866.2146
TURF FRHHE1.5493e-63.2274e-72.4850e-71.2104e-75.2041e-86.1536e-61.1084e-67.4244e-81.0338e-866.2146
SAOF FRHHZ9.3981e-73.5880e-73.1390e-71.4985e-75.1694e-81.9688e-61.6857e-66.3770e-89.2626e-973.2137
SAOF FRHHN1.1085e-63.0284e-72.6282e-71.3741e-75.2107e-83.3179e-61.7645e-66.2657e-88.8360e-973.2137
SAOF FRHHE1.2236e-63.1265e-72.6841e-71.0670e-74.7777e-82.3993e-61.6965e-66.8928e-88.9442e-973.2137
GBOS GUHHZ3.1521e-67.5705e-75.6820e-72.0923e-71.0961e-71.1609e-52.8946e-61.5213e-72.2429e-876.5109
GBOS GUHHN2.5330e-64.9553e-73.8152e-71.2436e-75.1411e-88.1658e-61.9664e-67.1866e-81.3119e-876.5109
GBOS GUHHE2.7697e-67.3933e-75.1535e-72.6794e-71.1632e-78.1569e-62.2586e-61.7807e-72.7056e-876.5109
ESCA FRHHZ1.1077e-61.8344e-71.4654e-75.9550e-82.7566e-82.6194e-68.2507e-73.6626e-85.1883e-979.5154
ESCA FRHHN1.9283e-62.6256e-71.7446e-76.2402e-83.4494e-85.1895e-65.5646e-75.2538e-86.2427e-979.5154
ESCA FRHHE1.8350e-62.6099e-72.0349e-77.9423e-84.0564e-85.1751e-61.0390e-65.5888e-86.5600e-979.5154
RSP GUHHZ1.1362e-61.3584e-78.3576e-83.6915e-81.5613e-82.8137e-64.6295e-72.5976e-83.2051e-979.819
RSP GUHHN1.4204e-61.9072e-71.2768e-74.4165e-81.8641e-83.6062e-64.9060e-72.7781e-85.0895e-979.819
RSP GUHHE1.3711e-62.0576e-71.2423e-75.3143e-86.0267e-86.4953e-65.4244e-71.2350e-71.1316e-879.819
MGRO GUHHZ6.9866e-72.0670e-71.1471e-77.4779e-83.8784e-81.6678e-64.6623e-75.5203e-87.8062e-984.5124
MGRO GUHHN8.5646e-71.9615e-71.5440e-76.5519e-83.9434e-82.2558e-61.0462e-65.1458e-85.9795e-984.5124
MGRO GUHHE9.5719e-72.2032e-71.8148e-76.0471e-83.1140e-83.1498e-69.3228e-74.2791e-85.8547e-984.5124
RORO GUHHZ1.0721e-62.7873e-72.5452e-71.1031e-75.2053e-83.4020e-61.3038e-67.4685e-89.0209e-998.6114
RORO GUHHN1.4536e-62.7002e-72.3213e-71.0108e-74.7750e-82.9817e-61.0215e-67.3780e-86.5300e-998.6114
RORO GUHHE1.7039e-63.3115e-72.4152e-71.0642e-75.5223e-83.2787e-61.0685e-67.0216e-89.8901e-998.6114
IMI GUHHZ1.3033e-62.0980e-71.4138e-76.1449e-83.3789e-83.8575e-67.9054e-74.3612e-85.6576e-998.7129
IMI GUHHN2.9890e-64.9013e-72.9956e-71.1823e-76.6469e-89.4309e-61.0992e-68.3966e-81.3400e-898.7129
IMI GUHHE1.6230e-62.9110e-72.3403e-78.5128e-85.4861e-85.0390e-61.2685e-66.8771e-87.2514e-998.7129
*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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