MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.9
2025-11-04 14:56:29 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-05 08:03:38

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Earthquake info - Manual location
Event - ID :251104145557
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-11-04 14:56:29.666 (UTC)
Location : Latitude: 44.375 N, Longitude: 7.123 E
Area :Alpi Marittime
Depth (km) :6.20
Distances (km) : 5.5 --- Sambuco
7.9 --- Pietraporzio
8.1 --- Castelmagno
8.3 --- Vinadio
9.7 --- Marmora
9.7 --- Canosio
10.2 --- Aisone
12.9 --- Celle di Macra
13.3 --- Prazzo
13.5 --- Pradleves
14.7 --- Macra
14.7 --- Stroppo
15.0 --- Argentera
15.3 --- Demonte
15.5 --- Acceglio
16.3 --- Monterosso Grana
16.5 --- San Damiano Macra
17.4 --- Cartignano
18.7 --- Elva
20.3 --- Valloriate

Quality location estimate: Erh: 0.8 km, Erz: 0.7 km, Nf: 36, Gap: 100 °, 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.
VINDIV2025-11-04 14:56:32.5490.02000.490.952025-11-04 14:56:33.7240.04000.001.5110.4
PZZGU2025-11-04 14:56:33.4800.00700.141.352025-11-04 14:56:35.5700.0561-0.430.4216.6
STVGU2025-11-04 14:56:33.7700.0200-0.260.802025-11-04 14:56:37.1400.07320.141.3622.7
ISOFR2025-11-04 14:56:34.8200.01200.640.582025-11-04 14:56:37.2500.07320.061.5023.1
SURFFR2025-11-04 14:56:35.2400.0170-0.031.452025-11-04 14:56:39.3990.08820.081.4428.0
ENRGU2025-11-04 14:56:35.6270.02000.410.912025-11-04 14:56:39.2300.09220.231.2029.4
BHBGU2025-11-04 14:56:39.6800.02610.600.772025-11-04 14:56:46.0650.17550.490.9152.8
MVIFFR2025-11-04 14:56:38.8230.0200-0.920.062025-11-04 14:56:46.9100.1635-0.091.1953.6
SAOFFR2025-11-04 14:56:40.4970.02000.470.972025-11-04 14:56:47.0810.0400-0.151.1655.5
GBOSGU2025-11-04 14:56:40.8100.03110.510.942025-11-04 14:56:47.7000.18150.191.2359.3
ESCAFR2025-11-04 14:56:42.0830.02000.560.862025-11-04 14:56:49.7300.1945-0.111.1264.0
MGROGU2025-11-04 14:56:41.7400.0200-0.161.162025-11-04 14:56:50.3200.2016-0.111.1166.4
RRLGU2025-11-04 14:56:41.6900.0321-0.171.132025-11-04 14:56:50.1650.2797-0.360.7566.7
IMIGU2025-11-04 14:56:44.0460.02000.161.322025-11-04 14:56:53.7570.1002-0.031.2280.5
ROROGU2025-11-04 14:56:43.9160.0200-0.041.382025-11-04 14:56:53.7590.0400-0.001.2680.8
RSPGU2025-11-04 14:56:44.9310.02000.251.182025-11-04 14:56:54.5200.3457-0.670.4287.0
PCPGU2025-11-04 14:56:50.2200.05820.990.172025-11-04 14:57:03.2950.04000.171.14114.5
LSDGU2025-11-04 14:56:51.1720.02000.980.182025-11-04 14:57:04.3220.0400-0.250.89120.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.905.07e-116.6358
STV GUHH0.778.39e-222.7132
ISO FRHH0.701.02e-123.1195
ENR GUHH0.961.64e-129.4124
BHB GUHH0.822.48e-252.812
SAOF FRHH0.511.19e-255.5141
GBOS GUHH1.182.47e-259.3104
ESCA FRHH0.801.71e-264.0162
MGRO GUHH0.741.39e-266.4124
RRL GUHH0.891.30e-266.7337
IMI GUHH1.163.20e-280.5130
RORO GUHH1.081.95e-280.8111
RSP GUHH1.031.60e-287.07
PCP GUHH1.048.71e-3114.580
LSD GUHH1.371.48e-2120.90


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 GUHHZ6.0643e-56.9883e-63.4820e-67.6738e-74.3697e-75.7895e-51.2829e-58.0149e-71.7111e-716.6358
PZZ GUHHN6.7468e-57.7355e-62.6528e-68.0466e-73.8931e-79.3075e-59.5697e-66.6610e-71.5332e-716.6358
PZZ GUHHE5.7012e-58.0934e-64.4466e-61.3445e-67.0402e-76.5139e-52.3458e-51.0116e-61.5502e-716.6358
STV GUHHZ1.1712e-51.2493e-66.3026e-71.5809e-79.0606e-82.1045e-52.9686e-61.5565e-73.1827e-822.7132
STV GUHHN1.6068e-52.1128e-67.4489e-72.0261e-71.0672e-71.7996e-52.9299e-61.6485e-73.8723e-822.7132
STV GUHHE1.5770e-52.1303e-66.7835e-71.5424e-78.0172e-83.2885e-52.6689e-61.4871e-74.0475e-822.7132
ISO FRHHZ7.8396e-68.0545e-73.0292e-78.3211e-84.9122e-81.2142e-51.2004e-68.7552e-81.7450e-823.1195
ISO FRHHN1.5510e-51.3074e-62.9648e-79.3154e-85.2664e-81.3015e-51.0284e-69.3584e-82.2739e-823.1195
ISO FRHHE1.8394e-52.0198e-67.3126e-72.7277e-71.6539e-72.9472e-53.2746e-62.7046e-74.9294e-823.1195
ENR GUHHZ2.8122e-52.5644e-67.8391e-73.1297e-71.7055e-75.2311e-53.6686e-62.7069e-75.2630e-829.4124
ENR GUHHN5.6883e-55.7521e-61.0748e-63.8218e-72.0210e-77.0052e-55.2634e-64.5956e-71.1197e-729.4124
ENR GUHHE5.9297e-54.4230e-61.0366e-62.7387e-71.6113e-79.0578e-53.8860e-63.4410e-79.7487e-829.4124
BHB GUHHZ4.5130e-65.3092e-72.4817e-78.0373e-84.1260e-81.2427e-51.0453e-67.8685e-81.1983e-852.812
BHB GUHHN3.3288e-64.8231e-72.5672e-77.7302e-83.8878e-89.9918e-61.0296e-66.7107e-88.7834e-952.812
BHB GUHHE4.5093e-64.5080e-71.8826e-77.1219e-82.9842e-89.9529e-67.9726e-74.7010e-89.0360e-952.812
SAOF FRHHZ7.5182e-71.4639e-71.3201e-74.6871e-82.1728e-81.3572e-69.1371e-73.3647e-84.3200e-955.5141
SAOF FRHHN8.2228e-71.2871e-79.9592e-84.0475e-81.4895e-81.9008e-65.3619e-72.0881e-83.0234e-955.5141
SAOF FRHHE8.5369e-71.3618e-71.0379e-73.7694e-81.7432e-81.9557e-67.0686e-72.3322e-84.1776e-955.5141
GBOS GUHHZ3.2167e-65.8839e-72.6034e-76.9035e-83.7193e-88.2905e-66.6916e-75.7448e-81.2218e-859.3104
GBOS GUHHN2.9801e-64.1276e-72.3350e-77.3728e-84.0975e-86.7499e-61.2512e-66.8355e-81.0227e-859.3104
GBOS GUHHE2.3069e-64.7550e-72.5675e-76.5950e-82.8004e-86.5601e-61.0993e-64.5506e-81.0045e-859.3104
ESCA FRHHZ2.1003e-61.9699e-79.6459e-83.9675e-81.6578e-82.4915e-63.3048e-72.6082e-83.6858e-964.0162
ESCA FRHHN3.0423e-63.1624e-71.6370e-74.1099e-81.9666e-86.2806e-66.7249e-72.7942e-86.0235e-964.0162
ESCA FRHHE2.0315e-62.8038e-71.3852e-74.9109e-82.4020e-84.9209e-64.3011e-73.2619e-87.0070e-964.0162
MGRO GUHHZ6.7197e-79.3034e-86.2121e-83.5630e-81.6012e-81.5470e-62.8546e-72.0488e-82.0463e-966.4124
MGRO GUHHN1.5061e-62.1867e-71.2471e-74.1435e-81.9925e-84.0354e-67.8396e-72.7833e-84.3035e-966.4124
MGRO GUHHE1.1605e-61.6326e-71.1729e-75.0054e-81.9794e-82.4950e-65.7669e-72.4115e-84.3187e-966.4124
RRL GUHHZ9.0372e-71.3265e-75.7311e-82.1591e-81.3085e-81.3517e-62.4660e-71.6777e-82.8562e-966.7337
RRL GUHHN1.2020e-62.0994e-71.1526e-73.3822e-81.8495e-83.7237e-66.7117e-72.8102e-84.9470e-966.7337
RRL GUHHE9.7256e-71.8627e-71.0295e-73.2015e-81.5042e-83.6171e-64.6322e-72.2934e-84.0185e-966.7337
IMI GUHHZ1.1078e-61.6922e-71.0667e-73.9455e-81.8720e-83.8364e-63.9190e-72.6727e-84.5461e-980.5130
IMI GUHHN4.1506e-65.2816e-72.4503e-71.4684e-71.2092e-78.1731e-68.8381e-72.4349e-71.4554e-880.5130
IMI GUHHE1.9647e-62.5747e-71.5581e-75.8007e-82.6436e-84.1716e-65.6498e-74.2769e-87.1159e-980.5130
RORO GUHHZ1.8915e-62.2245e-71.2266e-74.6799e-82.6240e-84.1938e-66.5032e-73.6281e-84.6513e-980.8111
RORO GUHHN1.5844e-62.9924e-72.1219e-74.8459e-83.1658e-83.5963e-61.5379e-65.1120e-87.2720e-980.8111
RORO GUHHE1.7041e-62.8020e-71.3299e-73.2687e-82.0507e-85.2459e-65.0979e-73.1993e-85.6951e-980.8111
RSP GUHHZ1.4107e-61.9427e-78.4971e-83.9255e-81.6652e-82.7953e-64.7632e-72.1894e-84.3270e-987.07
RSP GUHHN1.5641e-62.2472e-71.1476e-73.6815e-81.6237e-83.6079e-64.3210e-72.4304e-84.7644e-987.07
RSP GUHHE1.4663e-62.0530e-71.3821e-76.1658e-83.1005e-85.4321e-66.0751e-74.7067e-89.4860e-987.07
PCP GUHHZ5.9208e-78.0385e-86.9069e-83.2021e-81.3541e-81.3319e-65.4783e-71.6467e-82.4110e-9114.580
PCP GUHHN6.0319e-71.2456e-77.7917e-83.2694e-81.5060e-81.5961e-63.2320e-72.0725e-83.2398e-9114.580
PCP GUHHE6.4346e-79.3566e-87.2842e-82.6831e-81.3997e-81.8322e-64.4541e-72.2082e-82.4104e-9114.580
LSD GUHHZ5.0911e-77.4344e-85.8141e-82.9574e-81.9221e-81.1429e-63.4373e-73.0991e-83.0026e-9120.90
LSD GUHHN6.3813e-71.1552e-77.3248e-82.7095e-81.1563e-81.4500e-64.2495e-71.5688e-82.5169e-9120.90
LSD GUHHE9.6457e-71.5916e-71.3596e-74.3444e-81.9286e-82.5498e-69.2804e-72.8973e-85.1335e-9120.90
*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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