MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.3
2025-12-07 00:51:15 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-12-09 08:01:49

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Earthquake info - Manual location
Event - ID :251207005009
Magnitude (ML) :0.3 +/- 0.2
Origin Time :2025-12-07 00:51:15.157 (UTC)
Location : Latitude: 44.287 N, Longitude: 7.182 E
Area :Alpi Marittime
Depth (km) :9.71
Distances (km) : 2.6 --- Vinadio
4.3 --- Aisone
9.7 --- Demonte
10.3 --- Sambuco
13.5 --- Pietraporzio
13.9 --- Castelmagno
16.3 --- Valloriate
16.8 --- Pradleves
16.9 --- Moiola
17.1 --- Valdieri
17.7 --- Monterosso Grana
17.9 --- Entracque
18.7 --- Gaiola
18.7 --- Rittana
20.4 --- Marmora
20.5 --- Canosio
21.1 --- Valgrana
21.5 --- Roccasparvera
21.8 --- Celle di Macra
21.8 --- Roaschia

Quality location estimate: Erh: 0.9 km, Erz: 0.6 km, Nf: 30, Gap: 106 °, 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.
VINDIV2025-12-07 00:51:17.6030.02000.230.602025-12-07 00:51:18.8660.0400-0.011.9510.1
STVGU2025-12-07 00:51:18.3880.02000.111.322025-12-07 00:51:20.3440.0400-0.031.9116.3
ISOFR2025-12-07 00:51:18.7400.02000.021.982025-12-07 00:51:20.4440.0400-0.660.5218.8
ENRGU2025-12-07 00:51:19.5670.06020.051.762025-12-07 00:51:22.2690.0400-0.200.8822.7
PZZGU2025-12-07 00:51:20.7160.02000.001.992025-12-07 00:51:24.3470.0400-0.290.6427.4
SURFFR2025-12-07 00:51:22.2880.0200-0.051.762025-12-07 00:51:26.8850.0400-0.540.5237.7
TURFFR2025-12-07 00:51:22.7240.0200-0.081.582025-12-07 00:51:27.2520.0400-1.020.3139.7
MVIFFR2025-12-07 00:51:23.9370.02000.290.472025-12-07 00:51:28.3790.0400-1.480.1544.5
SAOFFR2025-12-07 00:51:23.8330.02000.001.832025-12-07 00:51:29.1260.0400-0.790.4445.8
MLIGIV2025-12-07 00:51:24.5620.0200-0.640.532025-12-07 00:51:30.5660.0400-1.670.0952.9
GBOSGU2025-12-07 00:51:24.9180.02000.131.352025-12-07 00:51:31.0860.0400-0.250.9453.7
ESCAFR2025-12-07 00:51:25.2420.0200-0.001.762025-12-07 00:51:31.2920.0400-1.060.3153.9
MGROGU2025-12-07 00:51:25.4580.0803-0.540.522025-12-07 00:51:32.3480.0400-1.230.2558.0
IMIGU2025-12-07 00:51:27.5890.0200-0.240.902025-12-07 00:51:35.7120.0400-0.950.3871.3
ROROGU2025-12-07 00:51:28.3900.02000.161.162025-12-07 00:51:37.1090.0400-0.131.1973.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
ISO FRHH0.033.17e-218.8223
ENR GUHH0.509.20e-222.7109
TURF FRHH0.191.13e-239.7154
SAOF FRHH0.015.55e-345.8138
ESCA FRHH0.175.83e-353.9163
MGRO GUHH0.164.84e-358.0118
IMI GUHH0.691.44e-271.3126
RORO GUHH0.506.29e-373.8105


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 GUHHZ1.6626e-51.5109e-61.2306e-74.2572e-82.3055e-84.5608e-67.5754e-74.1010e-81.0914e-816.3112
STV GUHHN6.8894e-66.7654e-71.2754e-74.1688e-82.6748e-84.6800e-65.2616e-75.9646e-81.1891e-816.3112
STV GUHHE4.3104e-64.5552e-71.0163e-72.8700e-81.7575e-84.7496e-64.9071e-73.5077e-87.9422e-916.3112
ISO FRHHZ2.5882e-64.2015e-71.7823e-75.9568e-83.6580e-84.7380e-67.8383e-76.0668e-81.0768e-818.8223
ISO FRHHN8.4104e-61.0402e-62.0379e-76.6694e-84.2819e-81.0661e-58.1054e-79.3491e-82.1245e-818.8223
ISO FRHHE3.0196e-63.8403e-71.3036e-74.2136e-82.5396e-86.6433e-64.7006e-74.1859e-87.3106e-918.8223
ENR GUHHZ1.4475e-51.5265e-62.2175e-77.3620e-84.5336e-81.9537e-59.0547e-79.6344e-82.4614e-822.7109
ENR GUHHN2.8003e-52.8364e-65.6158e-71.7563e-71.2173e-74.1525e-51.9376e-62.4113e-77.3516e-822.7109
ENR GUHHE3.2750e-53.0619e-63.7877e-71.1823e-77.7414e-82.8735e-52.0934e-62.1318e-76.2931e-822.7109
PZZ GUHHZ2.5856e-63.0412e-71.1046e-73.4040e-81.8026e-83.7137e-64.3827e-72.8898e-85.8636e-927.4348
PZZ GUHHN3.3296e-64.3613e-71.1890e-75.2226e-82.1159e-83.6142e-64.3542e-73.3772e-87.2831e-927.4348
PZZ GUHHE2.6009e-62.9304e-71.2237e-73.0762e-81.9991e-83.5503e-64.7726e-73.6191e-86.1627e-927.4348
TURF FRHHZ7.8023e-71.1779e-75.6746e-83.0747e-82.0579e-81.3913e-62.5455e-72.8111e-83.2156e-939.7154
TURF FRHHN1.4392e-62.1279e-78.4120e-82.7130e-81.8395e-84.1143e-63.0113e-73.1691e-85.8014e-939.7154
TURF FRHHE8.2040e-71.1752e-76.8144e-83.1019e-82.2668e-82.5524e-62.8904e-73.2120e-84.2551e-939.7154
SAOF FRHHZ3.6357e-76.2373e-83.7799e-82.2140e-81.6204e-81.0160e-62.1201e-72.3108e-81.7889e-945.8138
SAOF FRHHN5.9464e-76.2391e-83.7455e-82.3147e-81.1309e-81.1769e-61.9823e-71.8428e-81.8729e-945.8138
SAOF FRHHE5.2971e-77.3745e-84.5073e-82.2721e-81.8821e-81.1287e-62.8938e-72.7141e-82.0384e-945.8138
GBOS GUHHZ1.1483e-61.5598e-74.6795e-81.4853e-89.5803e-92.2012e-61.1649e-71.6481e-83.1913e-953.795
GBOS GUHHN1.0370e-61.5840e-71.1236e-76.1673e-82.8496e-81.6565e-68.0024e-74.0421e-84.1067e-953.795
GBOS GUHHE1.6353e-62.3824e-74.5426e-81.3922e-81.0785e-81.8744e-61.2723e-71.7775e-81.9810e-953.795
ESCA FRHHZ3.8719e-76.0718e-82.6143e-82.5888e-83.0914e-88.7937e-71.1720e-75.2310e-89.0795e-953.9163
ESCA FRHHN7.4121e-77.8560e-83.8403e-81.9908e-81.4013e-82.1096e-61.7186e-71.6150e-82.0675e-953.9163
ESCA FRHHE6.6219e-71.0179e-74.8328e-82.1808e-81.7594e-81.7135e-62.7590e-72.9991e-82.7877e-953.9163
MGRO GUHHZ2.9885e-75.0386e-82.0002e-81.3387e-81.0551e-85.0852e-79.8716e-81.6516e-81.4149e-958.0118
MGRO GUHHN6.9865e-79.0538e-82.8795e-82.4604e-81.5349e-88.6749e-71.1283e-72.1052e-82.8770e-958.0118
MGRO GUHHE4.7872e-75.4224e-82.9385e-81.5568e-81.4484e-81.2006e-61.3337e-71.7294e-81.5104e-958.0118
IMI GUHHZ5.9338e-79.8344e-84.4901e-83.9417e-88.4570e-89.8176e-71.8574e-71.6906e-71.7830e-871.3126
IMI GUHHN1.4608e-62.0724e-71.0386e-75.1677e-83.5954e-82.3634e-64.9970e-74.1522e-85.5884e-971.3126
IMI GUHHE6.5320e-79.0310e-85.5785e-82.5309e-81.7899e-81.2707e-63.0934e-72.3473e-83.0513e-971.3126
RORO GUHHZ4.9946e-76.5518e-82.4545e-81.2377e-81.4626e-81.0457e-67.1720e-82.7000e-81.6291e-973.8105
RORO GUHHN4.8907e-76.7885e-82.8718e-81.8842e-83.1571e-81.5575e-61.6719e-75.8017e-87.5575e-973.8105
RORO GUHHE5.3412e-76.9471e-82.9697e-81.1904e-81.1051e-81.3371e-68.2954e-81.8587e-82.0078e-973.8105
*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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