MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.4
2025-10-12 02:04:30 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-13 07:07:28

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Earthquake info - Manual location
Event - ID :251012020331
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-10-12 02:04:30.01 (UTC)
Location : Latitude: 44.525 N, Longitude: 7.240 E
Area :Alpi Cozie
Depth (km) :14.02
Distances (km) : 4.1 --- San Damiano Macra
5.6 --- Macra
6.0 --- Frassino
6.4 --- Cartignano
6.7 --- Celle di Macra
7.2 --- Sampeyre
7.6 --- Melle
8.6 --- Valmala
9.2 --- Stroppo
9.6 --- Roccabruna
10.8 --- Brossasco
11.6 --- Dronero
12.0 --- Villar San Costanzo
12.1 --- Pradleves
12.1 --- Elva
13.0 --- Castelmagno
13.1 --- Venasca
13.2 --- Isasca
13.7 --- Marmora
14.4 --- Monterosso Grana

Quality location estimate: Erh: 0.9 km, Erz: 0.8 km, Nf: 42, Gap: 85 °, Rms: 0.34


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.
PZZGU2025-10-12 02:04:33.4600.0120-0.011.772025-10-12 02:04:35.2900.0491-0.660.7618.4
VINDIV2025-10-12 02:04:34.1940.0200-1.050.302025-10-12 02:04:37.1260.0400-1.810.0328.2
STVGU2025-10-12 02:04:36.2860.02000.021.672025-10-12 02:04:39.9780.1504-0.660.8335.1
SURFFR2025-10-12 02:04:37.0300.02710.031.602025-10-12 02:04:41.8100.1103-0.291.2937.0
BHBGU2025-10-12 02:04:36.5800.0462-0.001.652025-10-12 02:04:40.7300.1113-0.381.2237.5
ENRGU2025-10-12 02:04:36.8900.02210.031.602025-10-12 02:04:41.3900.1143-0.261.3138.8
ISOFR2025-10-12 02:04:38.3250.02000.500.352025-10-12 02:04:42.9780.1464-0.211.3443.4
RRLGU2025-10-12 02:04:40.4420.0200-0.061.542025-10-12 02:04:47.5800.1755-0.311.2558.9
GBOSGU2025-10-12 02:04:40.1900.03310.031.482025-10-12 02:04:47.0690.1755-0.251.2859.0
TURFFR2025-10-12 02:04:41.5260.02000.051.362025-10-12 02:04:49.0730.0400-0.620.9163.9
OGAGFR2025-10-12 02:04:41.3030.0200-0.291.242025-10-12 02:04:49.6200.2486-0.211.2164.5
SAOFFR2025-10-12 02:04:41.4030.0200-0.421.182025-10-12 02:04:49.5200.3537-0.720.7966.4
MLIGIV2025-10-12 02:04:42.0470.0200-0.570.992025-10-12 02:04:50.5460.0400-1.130.3170.7
RSPGU2025-10-12 02:04:41.5300.0371-0.471.142025-10-12 02:04:49.2160.2166-1.320.2371.0
MVIFFR2025-10-12 02:04:43.3520.02000.450.382025-10-12 02:04:51.8690.2146-0.371.1571.6
MGROGU2025-10-12 02:04:42.2500.0391-0.341.232025-10-12 02:04:50.9700.3437-0.670.8471.9
ESCAFR2025-10-12 02:04:44.4140.02000.420.402025-10-12 02:04:53.0600.3928-0.860.6679.2
ROROGU2025-10-12 02:04:43.7300.0442-0.071.442025-10-12 02:04:53.3000.2436-0.311.1681.4
IMIGU2025-10-12 02:04:44.7850.0200-0.021.402025-10-12 02:04:54.9300.3938-0.600.8887.1
OGMOFR2025-10-12 02:04:46.8770.02001.320.002025-10-12 02:04:55.5500.3097-0.860.6488.8
PCPGU2025-10-12 02:04:47.8100.05720.460.402025-10-12 02:05:00.0870.04000.230.83104.5


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.702.59e-118.4259
STV GUHH0.431.70e-235.1168
BHB GUHH0.171.10e-237.53
ENR GUHH0.786.37e-238.8157
ISO FRHH-0.104.80e-343.4202
RRL GUHH0.486.60e-358.9321
GBOS GUHH0.749.21e-359.0123
TURF FRHH0.285.18e-363.9169
OGAG FRHH0.477.96e-364.5298
SAOF FRHH0.143.46e-366.4157
RSP GUHH0.254.14e-371.02
MGRO GUHH0.132.87e-371.9140
ESCA FRHH0.586.48e-379.2172
RORO GUHH0.505.10e-381.4125
IMI GUHH0.516.09e-387.1142
PCP GUHH0.362.27e-3104.589


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 GUHHZ2.4472e-54.6261e-62.1315e-67.5030e-74.1056e-78.2700e-51.0066e-56.4589e-71.1306e-718.4259
PZZ GUHHN3.4996e-54.1104e-62.0996e-67.7752e-73.7100e-77.6215e-59.5681e-65.6276e-79.9089e-818.4259
PZZ GUHHE3.4367e-54.4005e-62.0320e-65.0571e-72.6537e-71.0804e-49.9094e-64.3867e-71.0341e-718.4259
STV GUHHZ2.6458e-63.0062e-71.4534e-75.6139e-82.6125e-86.7662e-66.0331e-74.1961e-86.5918e-935.1168
STV GUHHN2.6658e-62.8119e-71.1235e-74.1242e-82.2497e-85.9561e-65.3255e-73.7520e-85.8722e-935.1168
STV GUHHE3.4111e-63.5874e-71.3345e-73.3272e-81.9247e-87.1996e-64.6094e-73.3211e-87.5634e-935.1168
BHB GUHHZ3.0611e-62.9184e-71.0683e-72.5099e-81.4781e-87.0717e-64.2836e-72.8352e-86.0141e-937.53
BHB GUHHN1.9303e-61.9645e-78.0670e-81.6709e-81.0815e-84.1820e-62.8468e-71.8233e-84.1597e-937.53
BHB GUHHE3.3230e-63.6117e-79.0989e-82.3261e-81.4366e-84.5725e-64.2261e-72.5422e-86.1068e-937.53
ENR GUHHZ1.0413e-51.2053e-63.3988e-71.0212e-74.9313e-81.5060e-51.8536e-68.9585e-82.5125e-838.8157
ENR GUHHN1.7157e-51.7437e-64.6619e-72.0042e-79.7899e-82.6152e-51.8153e-61.7458e-73.6760e-838.8157
ENR GUHHE1.7915e-51.6435e-64.0891e-71.4785e-77.5240e-82.3772e-51.6848e-61.2294e-72.9674e-838.8157
ISO FRHHZ6.3654e-71.0371e-75.0064e-81.5647e-89.3320e-91.9372e-62.1476e-71.2043e-82.2970e-943.4202
ISO FRHHN9.4661e-71.1733e-73.0602e-81.0088e-85.5210e-91.2127e-61.4919e-71.0364e-82.2300e-943.4202
ISO FRHHE8.2800e-78.6804e-84.1648e-81.1646e-87.5496e-91.8778e-62.0728e-71.1798e-81.9821e-943.4202
RRL GUHHZ5.1988e-76.1803e-83.4026e-81.6657e-88.9174e-91.1802e-61.9407e-71.4285e-81.7653e-958.9321
RRL GUHHN5.9778e-71.0365e-76.6278e-82.2207e-89.9973e-92.2591e-63.7729e-71.3578e-82.0875e-958.9321
RRL GUHHE8.4437e-71.1353e-76.0869e-81.8966e-88.6825e-92.7487e-62.2884e-71.3599e-82.7184e-958.9321
GBOS GUHHZ6.7438e-71.2745e-78.1501e-81.9768e-81.0215e-82.0407e-63.8210e-71.8518e-82.9323e-959.0123
GBOS GUHHN9.5500e-71.5767e-78.3962e-83.5550e-81.9477e-82.2137e-64.7000e-72.6141e-83.6033e-959.0123
GBOS GUHHE9.3129e-71.5732e-77.6372e-81.8403e-88.4844e-92.3711e-63.8604e-71.3713e-83.1131e-959.0123
TURF FRHHZ2.4632e-75.0439e-83.5957e-81.4588e-87.2738e-95.7750e-71.6408e-79.8773e-91.4847e-963.9169
TURF FRHHN3.2886e-75.9357e-84.1727e-81.4496e-89.4496e-91.3821e-61.8710e-71.4693e-81.6310e-963.9169
TURF FRHHE2.7538e-76.0937e-84.1745e-81.7757e-89.5397e-98.6872e-73.0587e-71.3044e-81.5094e-963.9169
OGAG FRHHZ1.6283e-73.7094e-83.7110e-82.2805e-81.0009e-87.7262e-72.2496e-71.0745e-81.1277e-964.5298
OGAG FRHHN2.9744e-76.6079e-85.3051e-82.9682e-82.0477e-81.2729e-61.8327e-73.1025e-84.6933e-964.5298
OGAG FRHHE2.4219e-78.0590e-86.1173e-84.0591e-82.4814e-85.7860e-72.9389e-74.1974e-86.1485e-964.5298
SAOF FRHHZ1.7156e-74.4247e-83.2496e-81.1767e-86.1396e-94.7823e-72.3083e-77.3815e-99.5459e-1066.4157
SAOF FRHHN1.8018e-74.2862e-82.2628e-81.5090e-88.0040e-95.3879e-78.9806e-89.8543e-91.3571e-966.4157
SAOF FRHHE2.3831e-74.1855e-83.0040e-81.3496e-88.9970e-98.5916e-72.4509e-71.1331e-81.3320e-966.4157
RSP GUHHZ6.9727e-78.1049e-82.5791e-88.4315e-95.1922e-99.8504e-71.1124e-77.4150e-91.8902e-971.02
RSP GUHHN6.3015e-78.1755e-84.1503e-81.0749e-85.9047e-91.3090e-61.4631e-79.7278e-91.6731e-971.02
RSP GUHHE7.6537e-78.7472e-83.7052e-81.0810e-87.1054e-91.6229e-61.2678e-71.0406e-82.0089e-971.02
MGRO GUHHZ2.0388e-72.7958e-81.5264e-89.9305e-97.2025e-93.5466e-75.2587e-81.0631e-87.4941e-1071.9140
MGRO GUHHN3.4302e-74.6656e-82.5694e-81.3150e-81.0086e-86.6707e-71.6729e-71.4266e-81.2362e-971.9140
MGRO GUHHE2.2691e-73.8582e-82.3771e-81.0947e-88.1115e-95.9941e-78.2476e-81.2467e-81.0177e-971.9140
ESCA FRHHZ3.1592e-74.3738e-83.0100e-81.1915e-86.3880e-98.6932e-71.7345e-79.7124e-91.0940e-979.2172
ESCA FRHHN3.8796e-75.3825e-82.6256e-81.2034e-87.0661e-99.1265e-71.1936e-78.6333e-91.3977e-979.2172
ESCA FRHHE4.4218e-79.0986e-85.4514e-81.6672e-81.0590e-81.8465e-64.1747e-71.6104e-82.0034e-979.2172
RORO GUHHZ5.2285e-78.5889e-84.1826e-89.7998e-95.5190e-91.3900e-61.7407e-79.2992e-91.7157e-981.4125
RORO GUHHN4.6457e-76.9800e-84.2069e-81.0539e-85.8953e-91.2886e-62.0099e-79.1337e-91.4210e-981.4125
RORO GUHHE5.6055e-78.7502e-84.8859e-81.1387e-86.1661e-91.8447e-61.6103e-71.0456e-82.0095e-981.4125
IMI GUHHZ3.6724e-75.0768e-82.5149e-81.5140e-81.0474e-81.1856e-61.4747e-71.5259e-81.2235e-987.1142
IMI GUHHN1.1225e-61.1347e-75.1588e-82.2728e-81.6750e-81.8336e-62.3551e-72.9532e-82.4391e-987.1142
IMI GUHHE4.5884e-76.1886e-82.8707e-81.3882e-81.1193e-89.0086e-71.1975e-71.5277e-81.3720e-987.1142
PCP GUHHZ2.2247e-72.5265e-81.8317e-81.0736e-87.8863e-93.6134e-78.3618e-81.0845e-88.6633e-10104.589
PCP GUHHN2.1203e-72.6942e-81.6681e-89.2772e-95.5393e-95.5435e-79.3598e-87.7330e-97.6076e-10104.589
PCP GUHHE1.9812e-73.2257e-81.9417e-88.6884e-97.3230e-95.2197e-71.0505e-71.2771e-89.5096e-10104.589
*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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