MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.6
2025-10-31 13:44:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-31 14:17:16

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Earthquake info - Manual location
Event - ID :251031134353
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-10-31 13:44:18.264 (UTC)
Location : Latitude: 44.621 N, Longitude: 7.223 E
Area :Alpi Cozie
Depth (km) :5.77
Distances (km) : 5.4 --- Sampeyre
6.7 --- Frassino
6.8 --- Oncino
8.0 --- Sanfront
8.3 --- Paesana
8.5 --- Ostana
9.9 --- Gambasca
9.9 --- Melle
10.2 --- Crissolo
10.5 --- Rifreddo
11.2 --- Martiniana Po
12.2 --- Brossasco
12.6 --- Casteldelfino
12.8 --- Valmala
13.0 --- Isasca
13.7 --- Envie
13.8 --- Revello
13.8 --- Macra
13.9 --- Elva
14.3 --- Barge

Quality location estimate: Erh: 0.7 km, Erz: 1.4 km, Nf: 30, Gap: 122 °, Rms: 0.25


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.
PZZGU2025-10-31 13:44:22.1300.01100.400.612025-10-31 13:44:24.1750.0701-0.021.5716.9
BHBGU2025-10-31 13:44:22.3140.0200-0.720.312025-10-31 13:44:26.2800.13840.021.3824.8
VINDIV2025-10-31 13:44:25.2280.02000.430.602025-10-31 13:44:29.5670.04000.181.1235.3
SURFFR2025-10-31 13:44:25.2500.0200-0.041.562025-10-31 13:44:29.9800.1183-0.450.6936.5
STVGU2025-10-31 13:44:26.0770.02000.111.352025-10-31 13:44:31.1170.1645-0.201.1043.1
ENRGU2025-10-31 13:44:26.5400.0251-0.011.602025-10-31 13:44:32.1600.4979-0.150.8446.7
RRLGU2025-10-31 13:44:27.1210.02000.001.592025-10-31 13:44:32.7200.1484-0.600.5448.4
ISOFR2025-10-31 13:44:27.9760.02000.500.422025-10-31 13:44:33.8600.16950.051.2250.9
OGAGFR2025-10-31 13:44:28.8200.02000.031.532025-10-31 13:44:35.9500.0400-0.350.8357.5
RSPGU2025-10-31 13:44:28.1700.1025-0.510.602025-10-31 13:44:36.2650.04000.350.7759.1
GBOSGU2025-10-31 13:44:29.4650.02000.001.522025-10-31 13:44:37.0500.2146-0.061.1365.0
SAOFFR2025-10-31 13:44:31.7690.02000.101.332025-10-31 13:44:39.9990.0400-1.050.1275.5
MGROGU2025-10-31 13:44:31.9190.0200-0.360.762025-10-31 13:44:41.9940.0400-0.151.1379.7
ROROGU2025-10-31 13:44:33.0920.0200-0.181.122025-10-31 13:44:42.9800.2747-0.570.6287.9
LSDGU2025-10-31 13:44:34.5050.02000.201.102025-10-31 13:44:45.1870.0400-0.300.9493.8


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.511.96e-116.9214
BHB GUHH0.444.42e-224.88
STV GUHH0.712.16e-243.1169
ENR GUHH1.058.09e-246.7160
RRL GUHH0.912.66e-248.4314
ISO FRHH0.278.19e-350.9196
OGAG FRHH0.631.46e-257.5289
RSP GUHH0.611.40e-259.13
SAOF FRHH0.303.84e-375.5159
MGRO GUHH0.515.43e-379.7144
RORO GUHH0.911.11e-287.9130
LSD GUHH0.878.55e-393.8356


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 GUHHZ3.2494e-53.4008e-61.4957e-63.8814e-72.2849e-73.3145e-58.7874e-64.0942e-77.9207e-816.9214
PZZ GUHHN3.3288e-54.3236e-61.4931e-63.3281e-71.8579e-77.2846e-55.3102e-63.6914e-79.3814e-816.9214
PZZ GUHHE2.6769e-52.8560e-61.8331e-64.7389e-72.5283e-74.5090e-59.4705e-63.9382e-78.3211e-816.9214
BHB GUHHZ8.5138e-61.0232e-64.6195e-71.1120e-77.1599e-82.1982e-52.1269e-61.3213e-72.1719e-824.88
BHB GUHHN6.9417e-68.6521e-73.9372e-78.3336e-84.8420e-82.3701e-51.7319e-68.1002e-81.7479e-824.88
BHB GUHHE8.9039e-61.1802e-63.4301e-71.0415e-74.9919e-81.9554e-51.8164e-69.4630e-82.6737e-824.88
STV GUHHZ2.7973e-63.2836e-71.3063e-73.4472e-82.0086e-83.6000e-66.9146e-73.1858e-85.4587e-943.1169
STV GUHHN3.1040e-63.0105e-71.2203e-73.5869e-81.8236e-83.2990e-65.1539e-72.8728e-86.0555e-943.1169
STV GUHHE4.1890e-65.1086e-71.5721e-74.8544e-82.6350e-81.0913e-55.3667e-74.8514e-81.0667e-843.1169
ENR GUHHZ9.8388e-68.9590e-73.0350e-78.1999e-84.1904e-81.3796e-51.2531e-67.3480e-81.7674e-846.7160
ENR GUHHN2.0578e-51.7886e-65.1312e-71.5317e-78.3358e-82.5457e-51.9424e-61.6652e-73.6229e-846.7160
ENR GUHHE2.7665e-52.4868e-66.9698e-71.7259e-71.3522e-72.4045e-53.7783e-62.3405e-73.6444e-846.7160
RRL GUHHZ2.0658e-62.3226e-71.0805e-74.7457e-81.9615e-83.0090e-65.3273e-72.6548e-85.2615e-948.4314
RRL GUHHN3.4155e-64.5086e-72.0801e-74.4338e-82.7928e-81.2541e-56.7051e-74.9612e-81.0607e-848.4314
RRL GUHHE3.1307e-64.7858e-72.0924e-76.8519e-83.6176e-81.2251e-58.5731e-76.3119e-81.1863e-848.4314
ISO FRHHZ1.3745e-61.7883e-77.6344e-83.6570e-82.3482e-82.9981e-63.6253e-74.1349e-87.2827e-950.9196
ISO FRHHN1.5136e-61.6415e-74.9655e-81.8435e-89.1247e-92.1234e-61.6114e-71.6303e-83.6463e-950.9196
ISO FRHHE1.5069e-61.7155e-77.4394e-82.5844e-81.2079e-83.3983e-61.7857e-71.9562e-83.9157e-950.9196
OGAG FRHHZ4.1640e-77.2169e-87.6118e-84.4229e-81.7005e-81.4753e-64.2617e-72.2175e-82.7101e-957.5289
OGAG FRHHN4.5889e-79.3669e-88.3374e-85.4450e-83.0489e-81.2661e-65.7285e-73.5984e-83.7424e-957.5289
OGAG FRHHE6.8096e-71.4320e-71.0266e-78.0988e-83.0363e-88.9870e-76.9617e-73.5616e-83.2818e-957.5289
RSP GUHHZ1.5549e-61.8513e-77.5418e-83.2230e-82.9875e-83.0947e-63.5324e-74.5985e-87.4977e-959.13
RSP GUHHN1.8188e-62.7289e-71.1858e-72.9806e-81.6143e-84.2172e-63.4297e-72.8582e-85.9285e-959.13
RSP GUHHE2.6389e-63.1813e-71.2018e-74.1723e-81.7170e-86.0849e-63.7684e-73.1564e-87.0476e-959.13
GBOS GUHHZ1.7728e-63.5676e-72.4079e-77.0380e-82.8294e-86.7511e-61.1911e-64.7384e-87.4406e-965.0131
GBOS GUHHN1.6733e-62.5477e-71.8523e-74.8564e-82.4879e-83.3071e-61.0583e-63.6670e-86.9609e-965.0131
GBOS GUHHE1.2186e-62.0599e-71.3091e-75.2011e-82.0480e-83.2770e-65.9239e-72.9887e-85.3222e-965.0131
SAOF FRHHZ2.7746e-75.0063e-84.1560e-81.7879e-81.5370e-87.9393e-71.9406e-72.2142e-81.4887e-975.5159
SAOF FRHHN2.8582e-74.2059e-83.1455e-81.8813e-81.5848e-86.7048e-71.2024e-72.0688e-81.7293e-975.5159
SAOF FRHHE3.3000e-73.6855e-82.6824e-81.8718e-81.4031e-86.8071e-71.0835e-72.1943e-81.1998e-975.5159
MGRO GUHHZ2.8488e-75.0188e-83.2411e-83.4017e-81.7900e-85.8879e-71.1421e-72.3766e-81.7170e-979.7144
MGRO GUHHN4.5870e-76.0037e-84.1699e-82.5434e-81.8999e-81.1591e-61.9316e-72.8160e-82.4582e-979.7144
MGRO GUHHE3.1420e-75.7719e-84.2170e-82.6867e-81.7434e-89.5713e-72.3496e-72.0829e-81.8236e-979.7144
RORO GUHHZ1.2456e-61.1947e-76.1836e-82.4378e-81.5963e-82.2148e-62.8040e-72.9497e-83.4364e-987.9130
RORO GUHHN1.1477e-61.4893e-71.0083e-73.1516e-81.4634e-81.9784e-63.6406e-72.2215e-83.3620e-987.9130
RORO GUHHE1.3336e-61.8655e-78.5251e-82.7215e-81.4326e-83.2356e-62.6215e-72.4450e-84.4515e-987.9130
LSD GUHHZ7.0683e-78.8087e-85.8227e-81.6128e-89.1026e-91.2867e-62.4664e-71.4573e-82.3539e-993.8356
LSD GUHHN7.8523e-71.0310e-76.7897e-82.1011e-81.5125e-81.8564e-64.9815e-72.5748e-87.7329e-993.8356
LSD GUHHE1.1401e-61.2425e-77.8963e-82.6979e-81.2175e-82.4362e-64.1903e-71.9283e-83.5545e-993.8356
*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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