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 08:01:32

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Earthquake info - Manual location
Event - ID :251104145413
Magnitude (ML) :0.9 +/- 0.2
Origin Time :2025-11-04 14:56:29.74 (UTC)
Location : Latitude: 44.373 N, Longitude: 7.123 E
Area :Alpi Marittime
Depth (km) :6.20
Distances (km) : 5.3 --- Sambuco
7.8 --- Pietraporzio
8.1 --- Vinadio
8.2 --- Castelmagno
9.9 --- Marmora
9.9 --- Canosio
10.0 --- Aisone
13.1 --- Celle di Macra
13.5 --- Pradleves
13.6 --- Prazzo
14.9 --- Macra
15.0 --- Stroppo
15.0 --- Argentera
15.2 --- Demonte
15.6 --- Acceglio
16.4 --- Monterosso Grana
16.7 --- San Damiano Macra
17.5 --- Cartignano
18.9 --- Elva
20.2 --- Valloriate

Quality location estimate: Erh: 0.7 km, Erz: 1 km, Nf: 30, Gap: 100 °, 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.
VINDIV2025-11-04 14:56:32.5590.02000.451.232025-11-04 14:56:33.7120.0400-0.041.3710.2
PZZGU2025-11-04 14:56:33.4800.00700.021.312025-11-04 14:56:35.5700.0561-0.570.1716.8
ISOFR2025-11-04 14:56:34.6940.01200.481.142025-11-04 14:56:37.2500.07320.051.2422.9
SURFFR2025-11-04 14:56:35.2400.0170-0.121.162025-11-04 14:56:39.3990.0882-0.021.2728.1
ENRGU2025-11-04 14:56:35.6110.02000.341.042025-11-04 14:56:39.0980.09220.051.2329.3
BHBGU2025-11-04 14:56:39.6800.02610.491.042025-11-04 14:56:46.0650.17550.351.0353.0
MVIFFR2025-11-04 14:56:38.7620.0200-1.010.022025-11-04 14:56:46.9100.1635-0.101.0553.3
SAOFFR2025-11-04 14:56:40.3790.02000.311.082025-11-04 14:56:47.0960.0400-0.161.0255.3
GBOSGU2025-11-04 14:56:40.8100.03110.441.122025-11-04 14:56:47.7000.18150.131.1459.2
ESCAFR2025-11-04 14:56:42.1000.02000.540.842025-11-04 14:56:49.7300.1945-0.120.9863.8
MGROGU2025-11-04 14:56:41.7520.0200-0.200.942025-11-04 14:56:50.3200.2016-0.150.9466.2
RRLGU2025-11-04 14:56:41.6900.0321-0.280.702025-11-04 14:56:50.1650.2797-0.500.5066.9
IMIGU2025-11-04 14:56:44.0490.02000.111.172025-11-04 14:56:53.8540.13030.041.1180.4
ROROGU2025-11-04 14:56:44.4700.02000.451.022025-11-04 14:56:53.7960.0400-0.021.1180.7
RSPGU2025-11-04 14:56:45.1520.02000.361.102025-11-04 14:56:55.5170.34570.190.9287.3


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.915.07e-116.8358
ISO FRHH0.701.04e-122.9196
ENR GUHH0.961.64e-129.3124
BHB GUHH0.832.48e-253.012
SAOF FRHH0.511.19e-255.3141
GBOS GUHH1.172.47e-259.2104
ESCA FRHH0.791.71e-263.8161
MGRO GUHH0.741.39e-266.2124
RRL GUHH0.891.30e-266.9337
IMI GUHH1.163.20e-280.4130
RORO GUHH1.071.95e-280.7111
RSP GUHH1.041.60e-287.37


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-716.8358
PZZ GUHHN6.7468e-57.7355e-62.6528e-68.0466e-73.8931e-79.3075e-59.5697e-66.6610e-71.5332e-716.8358
PZZ GUHHE5.7013e-58.0934e-64.4466e-61.3445e-67.0402e-76.5139e-52.3458e-51.0116e-61.5502e-716.8358
ISO FRHHZ7.8412e-68.0537e-73.0294e-78.3250e-84.9109e-81.2142e-51.1999e-68.7747e-81.7406e-822.9196
ISO FRHHN1.5509e-51.3074e-62.9646e-79.3112e-85.2749e-81.3015e-51.0284e-69.3590e-82.2757e-822.9196
ISO FRHHE1.8363e-52.0242e-67.3230e-72.7623e-71.7086e-72.9450e-53.3009e-62.7806e-74.9811e-822.9196
ENR GUHHZ2.8122e-52.5644e-67.8388e-73.1280e-71.7026e-75.2312e-53.6682e-62.7015e-75.3401e-829.3124
ENR GUHHN5.6883e-55.7521e-61.0747e-63.8211e-72.0178e-77.0051e-55.2624e-64.5877e-71.1123e-729.3124
ENR GUHHE5.9297e-54.4230e-61.0366e-62.7352e-71.6045e-79.0579e-53.8847e-63.4282e-79.6769e-829.3124
BHB GUHHZ4.5130e-65.3092e-72.4817e-78.0373e-84.1260e-81.2427e-51.0453e-67.8685e-81.1983e-853.012
BHB GUHHN3.3288e-64.8231e-72.5672e-77.7302e-83.8878e-89.9918e-61.0296e-66.7107e-88.7834e-953.012
BHB GUHHE4.5093e-64.5080e-71.8826e-77.1219e-82.9842e-89.9529e-67.9726e-74.7010e-89.0360e-953.012
SAOF FRHHZ7.5360e-71.4649e-71.3201e-74.6860e-82.1698e-81.3572e-69.1367e-73.3222e-84.1664e-955.3141
SAOF FRHHN8.2336e-71.2866e-79.9592e-84.0480e-81.4884e-81.9008e-65.3615e-72.0946e-83.0632e-955.3141
SAOF FRHHE8.5269e-71.3623e-71.0378e-73.7677e-81.7411e-81.9556e-67.0680e-72.3413e-84.2475e-955.3141
GBOS GUHHZ3.2167e-65.8839e-72.6034e-76.9035e-83.7193e-88.2905e-66.6916e-75.7448e-81.2218e-859.2104
GBOS GUHHN2.9801e-64.1276e-72.3350e-77.3728e-84.0975e-86.7499e-61.2512e-66.8355e-81.0227e-859.2104
GBOS GUHHE2.3069e-64.7550e-72.5675e-76.5950e-82.8004e-86.5601e-61.0993e-64.5506e-81.0045e-859.2104
ESCA FRHHZ2.1002e-61.9698e-79.6459e-83.9740e-81.6797e-82.4920e-63.3002e-72.6570e-84.2661e-963.8161
ESCA FRHHN3.0414e-63.1628e-71.6372e-74.1080e-81.9639e-86.2815e-66.7156e-72.8855e-87.1999e-963.8161
ESCA FRHHE2.0272e-62.8017e-71.3853e-74.9076e-82.4118e-84.9213e-64.2982e-73.2321e-87.4320e-963.8161
MGRO GUHHZ6.7199e-79.3034e-86.2121e-83.5630e-81.6013e-81.5470e-62.8547e-72.0483e-82.0408e-966.2124
MGRO GUHHN1.5061e-62.1868e-71.2471e-74.1434e-81.9923e-84.0353e-67.8394e-72.7851e-84.3257e-966.2124
MGRO GUHHE1.1605e-61.6326e-71.1729e-75.0051e-81.9772e-82.4951e-65.7678e-72.4212e-84.4404e-966.2124
RRL GUHHZ9.0373e-71.3265e-75.7311e-82.1591e-81.3085e-81.3517e-62.4660e-71.6777e-82.8562e-966.9337
RRL GUHHN1.2020e-62.0994e-71.1526e-73.3822e-81.8495e-83.7237e-66.7117e-72.8102e-84.9470e-966.9337
RRL GUHHE9.7255e-71.8627e-71.0295e-73.2015e-81.5042e-83.6171e-64.6322e-72.2934e-84.0185e-966.9337
IMI GUHHZ1.1078e-61.6921e-71.0667e-73.9455e-81.8720e-83.8364e-63.9190e-72.6727e-84.5462e-980.4130
IMI GUHHN4.1506e-65.2815e-72.4503e-71.4684e-71.2092e-78.1731e-68.8381e-72.4349e-71.4555e-880.4130
IMI GUHHE1.9647e-62.5747e-71.5581e-75.8007e-82.6436e-84.1716e-65.6498e-74.2769e-87.1161e-980.4130
RORO GUHHZ1.8915e-62.2245e-71.2266e-74.6800e-82.6265e-84.1940e-66.5048e-73.6477e-84.7052e-980.7111
RORO GUHHN1.5844e-62.9924e-72.1218e-74.8425e-83.1754e-83.5961e-61.5377e-65.1318e-87.4808e-980.7111
RORO GUHHE1.7041e-62.8020e-71.3300e-73.2608e-82.0341e-85.2462e-65.0942e-73.1667e-85.3914e-980.7111
RSP GUHHZ1.4107e-61.9428e-78.4967e-83.9267e-81.6646e-82.7953e-64.7625e-72.1724e-84.3162e-987.37
RSP GUHHN1.5641e-62.2472e-71.1476e-73.6796e-81.6227e-83.6078e-64.3221e-72.4157e-84.6838e-987.37
RSP GUHHE1.4663e-62.0534e-71.3822e-76.1623e-83.0987e-85.4320e-66.0756e-74.7000e-89.6613e-987.37
*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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