MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.4
2025-11-22 15:35:43 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-11-24 07:56:52

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Earthquake info - Manual location
Event - ID :251122153513
Magnitude (ML) :0.4 +/- 0.2
Origin Time :2025-11-22 15:35:43.047 (UTC)
Location : Latitude: 44.398 N, Longitude: 7.304 E
Area :Alpi Cozie
Depth (km) :6.80
Distances (km) : 1.9 --- Monterosso Grana
3.1 --- Pradleves
6.2 --- Valgrana
7.2 --- Montemale di Cuneo
7.5 --- Castelmagno
8.5 --- Valloriate
9.0 --- Cartignano
9.0 --- Dronero
9.1 --- Demonte
9.1 --- Rittana
9.4 --- Roccabruna
10.1 --- Caraglio
10.5 --- Bernezzo
10.6 --- Gaiola
10.9 --- Moiola
10.9 --- San Damiano Macra
11.3 --- Villar San Costanzo
11.5 --- Aisone
12.4 --- Roccasparvera
13.1 --- Cervasca

Quality location estimate: Erh: 1.5 km, Erz: 1.5 km, Nf: 22, Gap: 88 °, Rms: 0.26


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.
STVGU2025-11-22 15:35:46.7010.02000.021.582025-11-22 15:35:48.9470.0400-0.241.2518.7
PZZGU2025-11-22 15:35:45.7660.0200-1.630.142025-11-22 15:35:48.0280.0400-2.460.0020.9
ENRGU2025-11-22 15:35:47.2180.0200-0.081.562025-11-22 15:35:50.2560.04000.021.5322.3
ISOFR2025-11-22 15:35:49.0870.02000.041.452025-11-22 15:35:52.9450.0400-0.131.5732.2
GBOSGU2025-11-22 15:35:51.2600.0200-0.231.292025-11-22 15:35:57.2550.04000.031.3646.6
BHBGU2025-11-22 15:35:50.4420.0200-1.170.012025-11-22 15:35:55.8950.0400-1.570.1549.2
MGROGU2025-11-22 15:35:53.1350.0200-0.360.722025-11-22 15:36:00.6550.0400-0.221.2457.0
MVIFFR2025-11-22 15:35:54.9680.02001.180.002025-11-22 15:36:01.3520.0400-0.161.3457.5
ESCAFR2025-11-22 15:35:54.4490.0200-0.201.392025-11-22 15:36:02.5940.0400-0.171.2963.7
IMIGU2025-11-22 15:35:55.8500.02000.121.022025-11-22 15:36:04.9130.04000.230.7172.1
PCPGU2025-11-22 15:36:00.1690.0200-0.091.442025-11-22 15:36:12.5230.04000.090.95100.0


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.441.15e-120.9309
ENR GUHH0.458.37e-222.3154
ISO FRHH0.151.54e-232.2220
GBOS GUHH0.488.19e-346.6112
BHB GUHH0.166.28e-349.2356
MGRO GUHH0.276.53e-357.0134
ESCA FRHH0.641.20e-263.7175
IMI GUHH0.741.58e-272.1139
PCP GUHH0.644.81e-3100.080


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.
(°)
STV GUHHZ2.1590e-62.8919e-71.3816e-72.8990e-81.8098e-85.0819e-63.4119e-73.1213e-86.5625e-918.7174
STV GUHHN2.8811e-63.8866e-71.1050e-72.5158e-82.0302e-85.2938e-63.7698e-73.9166e-86.9047e-918.7174
STV GUHHE2.8219e-63.7356e-71.0062e-72.6701e-81.6600e-85.5899e-64.0655e-72.9360e-88.0073e-918.7174
PZZ GUHHZ9.4282e-61.3224e-66.4255e-72.1834e-71.1434e-71.8658e-53.6340e-61.7065e-72.7003e-820.9309
PZZ GUHHN1.1202e-51.9231e-68.6964e-73.0590e-71.4408e-72.5943e-54.1091e-62.1988e-74.4133e-820.9309
PZZ GUHHE8.0015e-69.0632e-74.5930e-71.1314e-75.2749e-81.2894e-52.0111e-68.2028e-82.0072e-820.9309
ENR GUHHZ9.6097e-69.2803e-71.9350e-75.6935e-83.3890e-81.0760e-57.8916e-76.9882e-81.7238e-822.3154
ENR GUHHN3.1394e-53.2380e-64.4808e-71.5186e-78.6447e-82.5253e-52.1768e-61.9557e-75.6072e-822.3154
ENR GUHHE2.3069e-52.0765e-63.6625e-79.8618e-86.0312e-81.9893e-51.4931e-61.3584e-73.8823e-822.3154
ISO FRHHZ1.4559e-62.0239e-71.0920e-73.6436e-82.0761e-82.3437e-65.5552e-72.9422e-84.9083e-932.2220
ISO FRHHN1.2608e-61.4920e-74.7588e-81.6742e-81.2212e-82.3385e-61.9280e-71.5562e-83.1926e-932.2220
ISO FRHHE2.2514e-63.3087e-71.0232e-72.7505e-82.4992e-85.1304e-63.2254e-74.8370e-88.1710e-932.2220
GBOS GUHHZ7.7930e-71.3936e-79.0040e-82.9569e-81.5021e-81.6594e-63.1623e-72.0079e-83.6383e-946.6112
GBOS GUHHN8.9314e-71.3692e-79.1400e-83.7102e-81.8455e-82.4493e-63.9142e-72.2980e-82.9536e-946.6112
GBOS GUHHE7.4956e-71.2227e-76.7445e-81.8633e-89.8966e-93.8900e-63.8263e-71.8100e-82.8400e-946.6112
BHB GUHHZ9.0702e-71.3456e-75.7558e-82.0825e-82.1923e-82.8588e-61.4803e-74.8367e-83.2202e-949.2356
BHB GUHHN8.4686e-71.3020e-74.8773e-81.6748e-81.2076e-81.9236e-61.8403e-72.0817e-82.8997e-949.2356
BHB GUHHE1.1095e-61.2654e-74.9323e-82.3994e-81.3154e-82.3894e-61.9890e-72.5554e-82.9176e-949.2356
MGRO GUHHZ4.0749e-74.6430e-82.7131e-82.4639e-82.3087e-86.9174e-79.6449e-84.0994e-82.6178e-957.0134
MGRO GUHHN5.5585e-76.6451e-84.5903e-82.8655e-82.4602e-81.0081e-62.0293e-73.5809e-83.4822e-957.0134
MGRO GUHHE3.9916e-76.2465e-83.9328e-82.0826e-81.8813e-81.1143e-61.9067e-72.4039e-82.7470e-957.0134
ESCA FRHHZ4.2026e-76.2020e-84.0812e-82.3955e-82.0391e-81.3931e-61.4907e-72.7056e-82.1389e-963.7175
ESCA FRHHN7.8727e-79.6947e-85.5783e-83.1658e-82.2980e-81.5668e-62.6593e-73.6554e-82.8014e-963.7175
ESCA FRHHE7.7052e-71.4023e-76.7747e-84.5942e-85.5548e-82.7082e-62.1989e-78.9847e-81.9044e-863.7175
IMI GUHHZ6.3337e-79.7661e-84.2665e-83.6407e-83.7172e-81.1623e-61.9018e-76.6798e-86.2299e-972.1139
IMI GUHHN1.5616e-63.2786e-71.2889e-75.5681e-85.3730e-84.3277e-64.2722e-77.8597e-86.6101e-972.1139
IMI GUHHE1.0124e-61.3284e-75.9804e-84.1594e-84.1781e-82.4631e-62.9305e-76.0538e-84.8490e-972.1139
PCP GUHHZ2.6086e-75.3130e-84.2896e-82.5014e-81.6652e-88.9398e-72.0595e-72.7584e-81.7525e-9100.080
PCP GUHHN3.0713e-75.6646e-83.8542e-81.7625e-81.3203e-86.5733e-72.1537e-71.9535e-82.1213e-9100.080
PCP GUHHE4.1299e-75.5104e-84.1611e-81.9236e-81.8979e-81.0197e-61.7762e-73.1767e-81.8940e-9100.080
*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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