MANUAL Location - Area: Alpi Cozie , magnitude (ML): 1.0
2025-12-11 18:52:02 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-12 07:46:46

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Earthquake info - Manual location
Event - ID :251211185136
Magnitude (ML) :1.0 +/- 0.2
Origin Time :2025-12-11 18:52:02.4 (UTC)
Location : Latitude: 44.782 N, Longitude: 6.721 E
Area :Alpi Cozie
Depth (km) :4.55
Distances (km) : 17.7 --- Claviere
19.9 --- Cesana Torinese
20.8 --- Sauze di Cesana
23.2 --- Sestriere
28.5 --- Prali
29.4 --- Oulx
29.5 --- Sauze d Oulx
30.0 --- Pontechianale
31.0 --- Pragelato
31.5 --- Bobbio Pellice
31.5 --- Salza di Pinerolo
32.3 --- Bellino
33.0 --- Massello
33.0 --- Bardonecchia
34.5 --- Villar Pellice
34.8 --- Casteldelfino
34.9 --- Salbertrand
35.6 --- Perrero
35.6 --- Crissolo
37.8 --- Rora

Quality location estimate: Erh: 0.9 km, Erz: 1.7 km, Nf: 32, Gap: 103 °, Rms: 0.27


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.
OGAGFR2025-12-11 18:52:05.6500.00800.001.442025-12-11 18:52:07.4050.0762-0.500.9115.5
RRLGU2025-12-11 18:52:06.5900.01000.230.822025-12-11 18:52:09.1000.05210.021.4017.7
SURFFR2025-12-11 18:52:09.0700.0170-0.171.142025-12-11 18:52:13.7800.1013-0.450.9934.6
BHBGU2025-12-11 18:52:10.9000.0231-0.011.412025-12-11 18:52:16.4900.1394-0.291.1843.5
PZZGU2025-12-11 18:52:10.3870.0200-0.391.072025-12-11 18:52:16.3600.1293-0.450.9744.1
OGMOFR2025-12-11 18:52:11.6290.02000.011.392025-12-11 18:52:17.7080.1795-0.311.1347.6
RSPGU2025-12-11 18:52:13.8300.03110.360.612025-12-11 18:52:20.8600.2396-0.281.1159.4
VINDIV2025-12-11 18:52:14.4380.02000.270.842025-12-11 18:52:22.3770.0400-0.201.2563.8
ISOFR2025-12-11 18:52:15.5050.0200-0.001.352025-12-11 18:52:24.3700.2166-0.291.0971.6
STVGU2025-12-11 18:52:16.1530.02000.121.182025-12-11 18:52:25.5000.3097-0.201.0576.7
LSDGU2025-12-11 18:52:17.1530.0200-0.221.242025-12-11 18:52:26.8890.0400-0.810.4082.3
ENRGU2025-12-11 18:52:17.4840.02000.530.292025-12-11 18:52:27.3840.13030.091.0982.8
TURFFR2025-12-11 18:52:21.4880.02000.330.742025-12-11 18:52:34.0140.0400-0.490.87104.5
GBOSGU2025-12-11 18:52:20.9550.02000.111.172025-12-11 18:52:33.8880.04000.141.01107.2
CIROGU2025-12-11 18:52:22.2960.0200-0.540.822025-12-11 18:52:35.4000.4088-1.480.11113.0
MGROGU2025-12-11 18:52:23.0260.0200-0.281.182025-12-11 18:52:37.6320.0400-0.570.76119.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OGAG FRHH0.812.74e-115.5273
RRL GUHH0.811.44e-117.719
BHB GUHH0.763.15e-243.582
PZZ GUHH1.151.40e-144.1134
RSP GUHH0.852.43e-259.446
ISO FRHH0.721.12e-271.6158
STV GUHH1.111.62e-276.7141
LSD GUHH1.071.86e-282.323
ENR GUHH1.445.94e-282.8138
TURF FRHH1.211.44e-2104.5149
CIRO GUHH1.155.62e-3113.036
MGRO GUHH1.087.81e-3119.4133


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.
(°)
OGAG FRHHZ1.3434e-52.9591e-62.3834e-61.9074e-61.0146e-63.3645e-51.3913e-51.1982e-61.2644e-715.5273
OGAG FRHHN1.7141e-53.2707e-62.3134e-68.0164e-74.6025e-74.2389e-59.4410e-65.9892e-78.5564e-815.5273
OGAG FRHHE1.2340e-53.2841e-62.6324e-61.1769e-64.8633e-71.9239e-51.8283e-56.3094e-77.3448e-815.5273
RRL GUHHZ1.8112e-51.7868e-64.9311e-71.8950e-71.0075e-72.4627e-53.1438e-61.5560e-73.2649e-817.719
RRL GUHHN1.4614e-52.2589e-68.3230e-74.5405e-72.0495e-74.1753e-53.2934e-62.8254e-74.1093e-817.719
RRL GUHHE1.6165e-52.9135e-61.0601e-63.5900e-72.0817e-74.6851e-54.5182e-63.4139e-75.8120e-817.719
BHB GUHHZ5.9462e-68.0534e-72.9509e-77.4162e-83.2778e-81.2531e-59.8790e-76.0779e-81.6340e-843.582
BHB GUHHN6.5810e-66.8053e-72.3350e-76.0418e-83.4745e-81.4778e-58.3681e-76.3612e-81.4962e-843.582
BHB GUHHE6.1518e-66.3371e-72.4450e-78.4722e-83.8694e-81.2111e-58.5744e-77.2025e-81.4045e-843.582
PZZ GUHHZ8.3831e-61.4654e-68.6691e-72.0791e-71.0447e-72.4817e-53.7996e-61.5247e-73.1710e-844.1134
PZZ GUHHN1.0526e-51.5439e-68.5284e-72.0685e-71.2245e-72.0753e-52.7990e-61.9998e-73.5405e-844.1134
PZZ GUHHE1.2420e-52.0376e-61.1191e-62.9634e-71.7896e-72.8493e-56.6060e-63.1578e-75.5738e-844.1134
RSP GUHHZ3.3505e-63.5288e-71.2856e-75.1578e-82.2692e-85.7507e-64.8936e-73.1787e-86.3438e-959.446
RSP GUHHN2.6455e-64.1199e-71.8701e-74.5605e-82.5505e-86.5839e-68.0776e-74.2349e-89.6228e-959.446
RSP GUHHE3.9182e-65.2870e-72.0972e-75.2563e-82.7281e-81.3543e-51.0053e-64.7465e-81.1171e-859.446
ISO FRHHZ1.3288e-62.0559e-71.0355e-73.1147e-81.4489e-82.7434e-64.6781e-71.9686e-83.4469e-971.6158
ISO FRHHN1.2361e-61.4184e-78.4946e-83.4585e-81.3229e-82.4454e-64.3887e-71.7593e-83.3944e-971.6158
ISO FRHHE1.4467e-61.6260e-71.1373e-74.9257e-81.9362e-82.8039e-64.8853e-72.6134e-84.1568e-971.6158
STV GUHHZ1.1788e-61.8164e-71.5023e-74.0578e-81.9558e-83.8973e-67.4028e-72.7740e-84.7394e-976.7141
STV GUHHN1.7071e-61.9586e-71.1626e-75.1120e-82.0985e-83.0853e-65.3913e-72.9601e-85.1490e-976.7141
STV GUHHE1.7139e-62.6957e-71.6141e-75.1447e-82.2532e-84.9381e-67.7226e-73.5280e-86.8055e-976.7141
LSD GUHHZ9.8464e-71.5557e-79.7196e-82.9037e-81.4323e-81.8816e-66.2143e-72.0630e-83.3667e-982.323
LSD GUHHN1.2452e-61.4376e-79.7956e-82.6328e-81.1652e-82.6356e-66.7190e-71.7203e-83.2802e-982.323
LSD GUHHE1.2754e-62.4027e-71.5761e-73.9749e-82.1963e-82.6387e-61.1538e-63.5983e-85.5586e-982.323
ENR GUHHZ3.9215e-65.8996e-72.2280e-76.9338e-83.4907e-87.9115e-69.8830e-75.4583e-81.1937e-882.8138
ENR GUHHN1.2625e-51.3771e-64.9651e-71.7933e-79.7644e-82.1076e-52.6632e-61.3162e-72.5649e-882.8138
ENR GUHHE1.2161e-51.0957e-65.0264e-71.3829e-77.7467e-81.9407e-52.3968e-61.2954e-72.6370e-882.8138
TURF FRHHZ6.4951e-71.0841e-77.7401e-83.0254e-81.5982e-81.4980e-64.1491e-72.0047e-83.1332e-9104.5149
TURF FRHHN7.7143e-71.9855e-71.1890e-75.2175e-82.2488e-82.2916e-63.7804e-73.3836e-84.2521e-9104.5149
TURF FRHHE4.7182e-71.2374e-71.0182e-75.1083e-82.0026e-81.5164e-65.9238e-72.5997e-83.5952e-9104.5149
GBOS GUHHZ5.3535e-71.0094e-78.7636e-82.8520e-81.4983e-82.6353e-63.4829e-72.1840e-82.7803e-9107.2124
GBOS GUHHN4.7024e-71.0502e-78.1540e-83.0164e-81.3797e-81.9777e-63.2520e-72.3695e-82.6228e-9107.2124
GBOS GUHHE5.0798e-71.0090e-78.3858e-82.7866e-81.1910e-82.3045e-65.3071e-71.4386e-82.5011e-9107.2124
CIRO GUHHZ3.6033e-75.8261e-84.2572e-81.6282e-81.4072e-81.0725e-62.1389e-71.9416e-85.7459e-9113.036
CIRO GUHHN5.1167e-75.9369e-83.2157e-81.0787e-85.6579e-99.1119e-71.3457e-79.1964e-91.5354e-9113.036
CIRO GUHHE5.5924e-78.6876e-85.2668e-81.4330e-86.9696e-99.5253e-72.1977e-71.1772e-82.2308e-9113.036
MGRO GUHHZ2.9973e-75.7280e-84.4087e-82.3365e-81.3364e-86.7520e-72.9114e-71.5311e-81.4414e-9119.4133
MGRO GUHHN3.0330e-77.1464e-86.5378e-83.7850e-81.5191e-88.9394e-73.4780e-71.8171e-82.0848e-9119.4133
MGRO GUHHE4.3586e-79.9937e-88.0260e-83.4323e-81.6808e-81.0100e-64.4887e-71.8658e-82.6516e-9119.4133
*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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