MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.5
2025-10-13 23:50:22 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-14 06:39:05

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Earthquake info - Manual location
Event - ID :251013234903
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-10-13 23:50:22.206 (UTC)
Location : Latitude: 44.306 N, Longitude: 7.340 E
Area :Alpi Marittime
Depth (km) :17.16
Distances (km) : 3.6 --- Demonte
4.3 --- Moiola
4.6 --- Valloriate
5.5 --- Valdieri
6.3 --- Gaiola
6.9 --- Rittana
8.6 --- Entracque
8.9 --- Roccasparvera
9.6 --- Aisone
10.0 --- Roaschia
11.3 --- Roccavione
11.6 --- Monterosso Grana
11.7 --- Bernezzo
12.1 --- Vignolo
12.1 --- Borgo San Dalmazzo
12.3 --- Valgrana
13.2 --- Vinadio
13.4 --- Cervasca
13.5 --- Pradleves
13.8 --- Robilante

Quality location estimate: Erh: 1.1 km, Erz: 0.8 km, Nf: 32, Gap: 105 °, Rms: 0.37


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.
STVGU2025-10-13 23:50:25.8000.01000.021.912025-10-13 23:50:27.7400.0541-0.501.1319.3
ENRGU2025-10-13 23:50:26.0900.01100.001.962025-10-13 23:50:28.3400.0581-0.431.2021.2
VINDIV2025-10-13 23:50:20.6480.0200-5.620.002025-10-13 23:50:27.6610.0400-1.390.2721.6
ISOFR2025-10-13 23:50:28.4000.02210.330.132025-10-13 23:50:31.5420.2456-0.511.0032.3
PZZGU2025-10-13 23:50:28.5300.0170-0.021.902025-10-13 23:50:32.8390.1043-0.221.2934.0
TURFFR2025-10-13 23:50:29.8500.0211-0.001.802025-10-13 23:50:34.4400.1183-0.850.4740.8
SAOFFR2025-10-13 23:50:30.3040.02000.091.302025-10-13 23:50:34.7200.1243-1.140.3743.2
GBOSGU2025-10-13 23:50:30.0570.0211-0.011.802025-10-13 23:50:35.2520.1002-0.191.3544.3
MLIGIV2025-10-13 23:50:30.5480.0200-0.600.802025-10-13 23:50:35.8970.0400-1.610.2347.9
SURFFR2025-10-13 23:50:31.1700.0261-0.061.682025-10-13 23:50:37.5500.1514-0.121.3549.2
MVIFFR2025-10-13 23:50:31.3000.0271-0.411.182025-10-13 23:50:36.7500.0400-1.830.1350.9
MGROGU2025-10-13 23:50:31.1200.0251-0.421.192025-10-13 23:50:36.6260.2466-1.540.2951.1
ESCAFR2025-10-13 23:50:32.1760.0200-0.141.392025-10-13 23:50:38.3550.1675-1.100.4155.8
BHBGU2025-10-13 23:50:32.0800.0311-0.461.162025-10-13 23:50:38.8070.0400-1.040.3861.7
ROROGU2025-10-13 23:50:33.5960.02000.180.762025-10-13 23:50:40.8400.1895-0.421.1164.2
IMIGU2025-10-13 23:50:33.3500.0321-0.151.362025-10-13 23:50:40.8600.1905-0.730.7164.9


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
STV GUHH0.841.31e-119.3189
ISO FRHH0.372.56e-232.3240
TURF FRHH0.632.90e-240.8174
SAOF FRHH0.291.20e-243.2154
GBOS GUHH0.529.95e-344.3100
MGRO GUHH0.381.04e-251.1128
ESCA FRHH0.419.43e-355.8177
RORO GUHH0.234.63e-364.2110
IMI GUHH0.842.49e-264.9135


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 GUHHZ7.7679e-65.5081e-72.3479e-75.1437e-82.8661e-81.0007e-58.6443e-75.0142e-81.1708e-819.3189
STV GUHHN3.4530e-53.9393e-66.9381e-72.6768e-71.6752e-73.4519e-53.0809e-63.5172e-78.7751e-819.3189
STV GUHHE2.0849e-52.8616e-68.5535e-72.5982e-71.6483e-74.5318e-53.1465e-62.8182e-76.0769e-819.3189
ENR GUHHZ3.3671e-53.0612e-66.8149e-71.7282e-79.9351e-83.3419e-52.3271e-62.3412e-75.6350e-821.2144
ENR GUHHN9.7569e-58.9133e-61.7831e-66.4085e-73.8625e-76.0024e-57.8319e-67.9582e-72.0894e-721.2144
ENR GUHHE1.0021e-48.0731e-61.5056e-65.5078e-73.4409e-71.0733e-46.4509e-67.3687e-71.5464e-721.2144
ISO FRHHZ3.2387e-64.6831e-71.0298e-72.8916e-81.7369e-83.7775e-63.9873e-73.4949e-89.0601e-932.3240
ISO FRHHN4.5323e-65.7592e-71.5807e-75.5513e-83.4291e-89.6662e-67.5266e-76.3834e-81.2571e-832.3240
ISO FRHHE6.5555e-65.8322e-71.1653e-73.5531e-81.9971e-86.0958e-64.4270e-74.4294e-81.1082e-832.3240
PZZ GUHHZ3.2700e-66.1940e-73.0150e-76.4026e-83.5236e-87.6515e-69.7091e-76.1041e-81.3360e-834.0322
PZZ GUHHN3.1839e-64.6935e-72.8708e-77.0192e-83.9573e-81.1446e-51.4037e-66.4134e-81.1389e-834.0322
PZZ GUHHE4.0541e-65.6240e-72.9955e-77.1613e-84.1209e-89.7883e-61.5807e-67.4970e-81.4141e-834.0322
TURF FRHHZ7.0040e-71.2294e-76.8715e-82.6163e-81.2126e-81.3608e-63.2246e-71.6348e-83.1766e-940.8174
TURF FRHHN1.3670e-62.4294e-79.9117e-83.9619e-81.6138e-83.5403e-64.8006e-71.9744e-84.3698e-940.8174
TURF FRHHE1.4678e-63.5906e-72.3647e-77.2457e-83.9962e-84.1856e-61.4355e-65.9656e-89.3744e-940.8174
SAOF FRHHZ7.7157e-71.8709e-71.0589e-73.3446e-81.6397e-81.6898e-66.2107e-72.3320e-83.9932e-943.2154
SAOF FRHHN5.8333e-71.1827e-78.2292e-83.7746e-82.0431e-81.4593e-64.9125e-72.7591e-83.5935e-943.2154
SAOF FRHHE7.8972e-71.5615e-79.2196e-83.9917e-81.6803e-82.0551e-64.8341e-72.3279e-83.9074e-943.2154
GBOS GUHHZ8.9044e-71.4856e-77.2886e-82.2022e-81.1904e-83.6828e-62.4809e-72.1735e-83.4479e-944.3100
GBOS GUHHN7.3524e-71.1836e-77.6926e-84.5369e-82.5275e-82.4921e-63.0730e-72.7650e-82.9331e-944.3100
GBOS GUHHE7.0212e-71.2978e-78.7575e-83.2254e-81.6275e-83.5469e-64.6372e-72.1606e-83.3221e-944.3100
MGRO GUHHZ6.0986e-77.8768e-84.5857e-82.2798e-81.2507e-81.2253e-61.6067e-72.0101e-81.8441e-951.1128
MGRO GUHHN7.6831e-79.9105e-86.7291e-82.4749e-81.5333e-81.9035e-64.0212e-72.4762e-82.7964e-951.1128
MGRO GUHHE7.4380e-71.4272e-78.8099e-82.6154e-81.4016e-81.5684e-63.7736e-72.3022e-83.5883e-951.1128
ESCA FRHHZ7.3113e-76.8999e-85.0172e-81.6025e-89.4712e-99.4118e-72.2761e-71.2094e-81.8468e-955.8177
ESCA FRHHN7.2554e-71.1347e-76.3409e-81.9020e-81.3134e-82.1231e-62.6070e-72.2595e-82.2436e-955.8177
ESCA FRHHE8.8292e-71.7045e-79.0934e-82.5461e-81.5211e-82.8888e-64.6991e-72.6705e-83.8142e-955.8177
BHB GUHHZ8.7910e-76.9162e-83.5749e-82.0835e-86.8716e-91.0542e-61.0239e-79.8326e-91.7058e-961.7354
BHB GUHHN4.3164e-75.5283e-82.9270e-81.1893e-85.0555e-99.9946e-71.0022e-77.2964e-91.0252e-961.7354
BHB GUHHE5.6996e-76.9526e-83.3556e-81.9532e-86.6553e-91.2054e-69.6874e-89.5388e-91.4719e-961.7354
RORO GUHHZ2.9137e-74.8321e-82.5519e-81.1409e-89.1441e-91.0923e-61.3619e-71.4422e-81.1456e-964.2110
RORO GUHHN3.3877e-75.3950e-84.2878e-82.0754e-82.0184e-81.1563e-62.1874e-72.6762e-82.4993e-964.2110
RORO GUHHE4.5452e-76.3394e-82.8544e-89.8349e-97.7411e-91.0024e-61.2963e-79.7267e-91.2852e-964.2110
IMI GUHHZ6.4295e-71.0245e-75.7769e-83.9601e-85.4326e-81.4965e-62.9202e-78.9128e-85.2019e-964.9135
IMI GUHHN2.0657e-63.4903e-72.1731e-75.3804e-83.1677e-82.7390e-68.2282e-74.9744e-88.0966e-964.9135
IMI GUHHE7.7155e-71.3543e-79.0875e-83.2803e-82.1185e-81.4397e-65.0952e-72.7503e-84.3810e-964.9135
*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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