MANUAL Location - Area: Alpi Cozie , magnitude (ML): 1.3
2025-10-17 21:11:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-18 13:52:22

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Earthquake info - Manual location
Event - ID :251017211052
Magnitude (ML) :1.3 +/- 0.2
Origin Time :2025-10-17 21:11:18.771 (UTC)
Location : Latitude: 44.521 N, Longitude: 7.248 E
Area :Alpi Cozie
Depth (km) :14.02
Distances (km) : 3.5 --- San Damiano Macra
5.6 --- Cartignano
5.9 --- Macra
6.2 --- Frassino
6.8 --- Celle di Macra
7.4 --- Melle
8.0 --- Sampeyre
8.2 --- Valmala
8.8 --- Roccabruna
9.7 --- Stroppo
10.5 --- Brossasco
10.8 --- Dronero
11.3 --- Villar San Costanzo
11.5 --- Pradleves
12.6 --- Castelmagno
12.6 --- Venasca
12.8 --- Elva
12.9 --- Isasca
13.6 --- Montemale di Cuneo
13.7 --- Monterosso Grana

Quality location estimate: Erh: 0.8 km, Erz: 0.6 km, Nf: 48, Gap: 77 °, Rms: 0.36


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.
PZZGU2025-10-17 21:11:22.2500.0090-0.021.802025-10-17 21:11:24.2100.0651-0.561.0718.7
VINDIV2025-10-17 21:11:23.0000.0200-0.960.412025-10-17 21:11:25.9650.0400-1.640.0927.9
STVGU2025-10-17 21:11:24.9900.01700.061.542025-10-17 21:11:28.8800.1073-0.361.1134.6
SURFFR2025-10-17 21:11:25.8200.0190-0.021.712025-10-17 21:11:30.5000.1153-0.501.0637.5
BHBGU2025-10-17 21:11:25.4000.01900.001.742025-10-17 21:11:29.3500.1173-0.610.9637.9
ENRGU2025-10-17 21:11:25.5400.01900.031.682025-10-17 21:11:29.9820.2386-0.251.2038.2
ISOFR2025-10-17 21:11:27.1000.02210.550.272025-10-17 21:11:31.8400.1324-0.041.3243.2
GBOSGU2025-10-17 21:11:28.8300.02910.031.532025-10-17 21:11:35.5100.1785-0.361.1458.2
RRLGU2025-10-17 21:11:29.3100.0291-0.061.512025-10-17 21:11:36.2700.1795-0.570.9759.6
TURFFR2025-10-17 21:11:30.2200.03210.091.292025-10-17 21:11:37.7800.1925-0.501.0363.3
OGAGFR2025-10-17 21:11:30.5100.03210.031.442025-10-17 21:11:38.2440.2186-0.550.9865.2
SAOFFR2025-10-17 21:11:30.4400.0331-0.031.502025-10-17 21:11:37.7900.2005-1.020.4965.7
MLIGIV2025-10-17 21:11:30.7420.0200-0.521.082025-10-17 21:11:38.8790.0400-1.360.2370.0
MGROGU2025-10-17 21:11:30.8700.0351-0.361.082025-10-17 21:11:39.4200.2156-0.770.7671.1
MVIFFR2025-10-17 21:11:32.0140.03610.420.362025-10-17 21:11:40.4400.2156-0.461.0571.2
RSPGU2025-10-17 21:11:30.3200.0351-0.491.092025-10-17 21:11:38.9930.2506-0.391.0971.4
ROROGU2025-10-17 21:11:32.3400.0452-0.101.372025-10-17 21:11:41.7300.2456-0.431.0680.6
BIGNGU2025-10-17 21:11:32.6100.0562-0.590.992025-10-17 21:11:42.6700.5029-0.800.7283.5
IMIGU2025-10-17 21:11:33.4600.04320.021.362025-10-17 21:11:43.7000.2617-0.381.0786.4
LATOIV2025-10-17 21:11:33.8470.02000.640.202025-10-17 21:11:42.7160.0400-0.970.5389.4
OGMOFR2025-10-17 21:11:34.8180.02000.400.422025-10-17 21:11:43.9800.0400-1.370.2489.5
QLNOIV2025-10-17 21:11:34.4140.02000.021.342025-10-17 21:11:45.3600.3277-0.341.0391.0
PCPGU2025-10-17 21:11:36.3900.05220.370.502025-10-17 21:11:48.0310.4098-0.430.93103.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH1.401.26e+018.7262
STV GUHH1.311.30e-134.6169
BHB GUHH1.109.09e-237.92
ENR GUHH1.735.85e-138.2157
ISO FRHH1.241.06e-143.2203
GBOS GUHH1.556.07e-258.2123
RRL GUHH1.263.90e-259.6321
TURF FRHH1.275.24e-263.3169
OGAG FRHH1.437.11e-265.2298
SAOF FRHH0.962.34e-265.7158
MGRO GUHH1.022.26e-271.1140
RSP GUHH1.102.93e-271.41
RORO GUHH1.404.18e-280.6125
BIGN GUEH1.222.55e-283.5151
IMI GUHH1.394.68e-286.4143
QLNO IVHH1.372.92e-291.0104
PCP GUHH1.322.09e-2103.888


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 GUHHZ1.4206e-41.7424e-59.3121e-62.5699e-61.3915e-62.4358e-45.0141e-52.3798e-64.3934e-718.7262
PZZ GUHHN1.5587e-42.2380e-58.8396e-63.2130e-61.4936e-61.9902e-44.1780e-52.4824e-64.9449e-718.7262
PZZ GUHHE1.2977e-42.2225e-59.4332e-62.4299e-61.3973e-63.2136e-44.0384e-52.1380e-64.4264e-718.7262
STV GUHHZ3.1202e-53.7903e-61.0974e-62.9098e-71.4134e-74.9692e-54.4568e-63.0376e-77.1431e-834.6169
STV GUHHN2.4136e-52.7682e-69.4351e-72.8340e-71.5899e-75.7406e-52.6447e-62.9198e-76.0351e-834.6169
STV GUHHE2.2942e-53.2106e-61.0217e-62.1801e-71.2708e-73.6391e-54.0834e-62.4664e-76.4410e-834.6169
BHB GUHHZ1.2261e-51.5870e-68.3265e-72.2288e-71.2525e-73.5589e-53.7226e-61.9893e-73.5718e-837.92
BHB GUHHN7.9957e-61.5271e-68.0847e-71.9072e-79.6814e-82.0471e-55.0742e-61.7155e-73.7352e-837.92
BHB GUHHE9.0116e-61.3987e-68.8018e-72.6761e-71.2300e-72.6888e-54.6404e-61.7220e-72.9857e-837.92
ENR GUHHZ6.4753e-57.9486e-61.9495e-65.0759e-73.4976e-71.5175e-49.4505e-66.7165e-71.5056e-738.2157
ENR GUHHN1.6664e-41.7135e-53.4137e-61.0417e-65.1513e-71.9820e-41.2969e-51.1192e-62.6877e-738.2157
ENR GUHHE2.1670e-41.8298e-53.9022e-61.1904e-66.4944e-72.6393e-41.4988e-51.3136e-63.5681e-738.2157
ISO FRHHZ1.2791e-52.1058e-68.3312e-72.6380e-71.5457e-72.4363e-54.2403e-62.3169e-74.2435e-843.2203
ISO FRHHN1.9662e-52.5016e-65.3327e-71.9560e-71.2326e-72.3696e-52.6872e-62.1696e-74.3863e-843.2203
ISO FRHHE2.1539e-52.7073e-67.3282e-72.0305e-71.0691e-73.1127e-52.9052e-62.1538e-75.7666e-843.2203
GBOS GUHHZ5.9778e-69.3586e-75.5431e-71.4210e-76.9036e-81.7116e-53.7705e-69.9899e-82.0704e-858.2123
GBOS GUHHN6.0054e-68.4369e-75.1594e-71.3732e-76.2979e-81.5005e-52.9641e-69.6910e-81.8708e-858.2123
GBOS GUHHE6.5780e-61.1996e-65.2210e-71.3159e-76.8195e-81.7339e-51.7951e-61.1143e-72.3609e-858.2123
RRL GUHHZ2.8614e-63.3614e-72.1412e-71.0069e-74.5992e-86.1223e-61.3241e-65.5893e-87.3653e-959.6321
RRL GUHHN2.6584e-65.6138e-73.3616e-78.9592e-84.5572e-87.0720e-61.6295e-67.1351e-81.3987e-859.6321
RRL GUHHE2.7830e-64.3332e-73.0138e-71.1802e-75.3491e-89.1507e-61.3173e-68.4338e-81.2350e-859.6321
TURF FRHHZ2.6017e-63.8177e-72.5654e-79.6061e-83.9777e-84.8177e-61.5090e-65.3196e-88.5503e-963.3169
TURF FRHHN4.3639e-65.1158e-73.5779e-71.2516e-75.1931e-86.4127e-61.9358e-67.4393e-81.2701e-863.3169
TURF FRHHE2.5200e-66.6621e-73.9582e-71.4326e-78.1004e-88.6287e-62.2060e-61.2522e-71.6951e-863.3169
OGAG FRHHZ1.3054e-63.8593e-73.2951e-72.0485e-79.0057e-84.9927e-61.8712e-61.0008e-71.0527e-865.2298
OGAG FRHHN1.9172e-64.9973e-74.0757e-72.1206e-77.0870e-85.6678e-61.4536e-68.6999e-81.1560e-865.2298
OGAG FRHHE1.4094e-65.9874e-75.2669e-73.9021e-71.2395e-72.5109e-62.5632e-61.5686e-71.5068e-865.2298
SAOF FRHHZ1.2706e-62.8409e-72.1063e-76.7628e-83.3623e-82.9736e-61.4742e-64.5979e-86.7364e-965.7158
SAOF FRHHN1.6027e-62.5978e-71.7182e-76.5311e-83.3397e-84.3501e-69.4242e-74.4586e-86.6629e-965.7158
SAOF FRHHE1.5464e-62.8009e-72.0688e-77.9114e-84.1206e-83.4974e-61.3660e-65.5992e-87.0270e-965.7158
MGRO GUHHZ1.6771e-62.5298e-71.2428e-75.8249e-82.9180e-84.8906e-65.2054e-74.8244e-86.9959e-971.1140
MGRO GUHHN2.9302e-64.1386e-72.0192e-78.9639e-84.0234e-88.2550e-69.1650e-76.0358e-88.8201e-971.1140
MGRO GUHHE2.0317e-63.0290e-72.3419e-79.2779e-83.6570e-86.0168e-69.9586e-75.0526e-87.6047e-971.1140
RSP GUHHZ2.5662e-63.4450e-71.7143e-74.4457e-82.1246e-85.6441e-66.6569e-73.5531e-87.5007e-971.41
RSP GUHHN2.8485e-64.6828e-72.8924e-76.6272e-83.7636e-89.5416e-61.0146e-65.9091e-81.1363e-871.41
RSP GUHHE3.0125e-64.4339e-72.7839e-76.4771e-83.1435e-81.1020e-51.4804e-65.2877e-81.0043e-871.41
RORO GUHHZ3.5488e-64.9095e-72.7038e-76.2119e-83.4008e-81.2838e-51.2078e-66.3062e-81.0108e-880.6125
RORO GUHHN4.3354e-66.6004e-74.0493e-78.6997e-84.5509e-81.1898e-51.4117e-67.4573e-81.5904e-880.6125
RORO GUHHE5.8131e-67.2240e-74.2384e-71.0207e-75.3501e-81.7865e-51.6791e-68.6184e-81.5941e-880.6125
BIGN GUEHZ2.1519e-61.9113e-78.8828e-83.2625e-82.0377e-82.8361e-64.3785e-73.6845e-84.4830e-983.5151
BIGN GUEHN6.8367e-67.2743e-72.1414e-76.8506e-83.3943e-89.1488e-69.1021e-76.3464e-81.2461e-883.5151
BIGN GUEHE8.8673e-67.6229e-72.0367e-75.8679e-83.2122e-87.7376e-68.2989e-76.5204e-81.4472e-883.5151
IMI GUHHZ2.7866e-63.8963e-71.9224e-76.5161e-87.3329e-88.5720e-69.5318e-71.1367e-79.1008e-986.4143
IMI GUHHN9.0436e-61.2590e-64.2897e-79.9783e-85.7227e-82.2712e-51.3723e-61.0989e-72.4250e-886.4143
IMI GUHHE3.7486e-64.9179e-72.2836e-75.6491e-83.2231e-88.0727e-61.0879e-65.9875e-81.1513e-886.4143
QLNO IVHHZ2.0579e-63.1778e-71.5999e-75.6719e-82.8700e-88.2749e-67.0358e-73.5721e-86.7994e-991.0104
QLNO IVHHN4.3081e-65.1377e-72.9902e-79.3672e-84.5054e-87.8993e-61.4617e-67.8474e-81.1062e-891.0104
QLNO IVHHE3.4717e-64.6093e-72.4599e-79.5567e-83.7550e-88.0176e-61.0898e-65.6778e-89.2270e-991.0104
PCP GUHHZ1.6890e-62.3905e-71.8357e-78.5025e-83.0229e-84.2799e-68.5678e-74.7828e-85.8161e-9103.888
PCP GUHHN1.8616e-62.6640e-72.1228e-77.0283e-82.7825e-83.5951e-61.1725e-63.9931e-85.8997e-9103.888
PCP GUHHE2.3431e-63.3759e-72.3262e-76.1882e-83.0075e-86.6963e-61.0082e-64.4290e-87.8122e-9103.888
*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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