MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.2
2025-10-08 21:58:18 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-10-09 07:19:19

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Earthquake info - Manual location
Event - ID :251008215653
Magnitude (ML) :0.2 +/- 0.2
Origin Time :2025-10-08 21:58:18.81 (UTC)
Location : Latitude: 44.593 N, Longitude: 6.704 E
Area :Alpi Cozie
Depth (km) :2.54
Distances (km) : 24.8 --- Bellino
25.9 --- Pontechianale
26.2 --- Acceglio
28.6 --- Argentera
29.0 --- Casteldelfino
30.3 --- Prazzo
31.1 --- Elva
33.6 --- Canosio
34.3 --- Marmora
34.8 --- Stroppo
37.8 --- Crissolo
38.0 --- Pietraporzio
38.5 --- Sampeyre
38.7 --- Claviere
39.0 --- Macra
39.6 --- Oncino
39.6 --- Celle di Macra
39.9 --- Ostana
40.6 --- Sauze di Cesana
40.6 --- Bobbio Pellice

Quality location estimate: Erh: 1.3 km, Erz: 1.9 km, Nf: 23, Gap: 180 °, Rms: 0.21


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.
SURFFR2025-10-08 21:58:22.4600.01200.191.232025-10-08 21:58:24.8400.04410.011.9415.4
OGAGFR2025-10-08 21:58:24.0900.0200-0.011.972025-10-08 21:58:27.6700.0782-0.121.3025.5
PZZGU2025-10-08 21:58:25.8400.01600.011.952025-10-08 21:58:30.9100.0982-0.041.5534.3
RRLGU2025-10-08 21:58:26.7600.02310.320.772025-10-08 21:58:31.7390.11030.061.6137.3
VINDIV2025-10-08 21:58:26.8130.0200-1.550.072025-10-08 21:58:33.0390.0400-2.070.0149.0
BHBGU2025-10-08 21:58:29.1700.02510.281.012025-10-08 21:58:35.8320.0400-0.071.4051.8
ISOFR2025-10-08 21:58:28.5450.0200-0.510.232025-10-08 21:58:34.8980.0400-1.210.1753.3
STVGU2025-10-08 21:58:30.4420.02000.041.802025-10-08 21:58:37.8130.0400-0.700.2762.8
RSPGU2025-10-08 21:58:34.1380.02001.210.022025-10-08 21:58:42.8940.04000.071.3676.0
TURFFR2025-10-08 21:58:35.1500.04820.131.532025-10-08 21:58:45.6300.2917-0.850.3687.9
SAOFFR2025-10-08 21:58:36.3710.02000.061.582025-10-08 21:58:47.5920.0400-0.960.2695.6
QLNOIV2025-10-08 21:58:42.5700.38890.490.63--:---.-----.---.-- 133.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OGAG FRHH-0.121.28e-225.5329
PZZ GUHH0.242.82e-234.3106
RRL GUHH0.106.91e-337.311
BHB GUHH0.216.31e-351.859
ISO FRHH-0.113.08e-353.3149
STV GUHH0.344.24e-362.8128
RSP GUHH0.334.36e-376.035
TURF FRHH0.282.59e-387.9141
SAOF FRHH0.141.54e-395.6135


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 FRHHZ8.1800e-71.4515e-71.2694e-74.6395e-82.2851e-81.9614e-66.4995e-72.7366e-83.9246e-925.5329
OGAG FRHHN8.9196e-71.4521e-71.0540e-73.0703e-81.5280e-83.3854e-65.4347e-71.8582e-83.6783e-925.5329
OGAG FRHHE8.5472e-71.4905e-71.3262e-74.6910e-82.7849e-82.7894e-67.5593e-73.5363e-83.8716e-925.5329
PZZ GUHHZ1.9498e-63.1305e-71.7012e-73.9636e-82.2834e-84.9642e-61.1687e-63.4260e-86.6056e-934.3106
PZZ GUHHN2.8125e-65.8901e-72.7442e-76.6845e-83.2253e-85.2853e-61.2060e-65.1857e-81.1876e-834.3106
PZZ GUHHE1.9200e-63.6095e-72.0494e-76.4330e-83.4824e-84.0252e-61.2513e-65.0652e-89.0214e-934.3106
RRL GUHHZ5.9096e-78.2679e-83.7214e-81.5149e-87.1761e-91.5678e-62.2801e-79.3089e-91.8413e-937.311
RRL GUHHN5.2954e-79.0413e-86.6771e-82.1715e-89.0524e-92.4802e-63.3428e-71.2694e-82.3084e-937.311
RRL GUHHE6.0892e-79.8820e-85.9584e-82.8219e-81.1353e-81.5897e-62.8543e-71.3123e-82.0408e-937.311
BHB GUHHZ7.4246e-79.5085e-85.7879e-82.3896e-88.7344e-92.3762e-61.7392e-71.4126e-82.3917e-951.859
BHB GUHHN6.9082e-78.3781e-85.4662e-81.7512e-86.8015e-91.4550e-62.4085e-79.8963e-91.6127e-951.859
BHB GUHHE5.8190e-78.3075e-85.5152e-82.7922e-89.6788e-91.2002e-62.3666e-71.4008e-82.1551e-951.859
ISO FRHHZ5.3584e-76.3871e-82.3778e-88.4747e-99.7397e-97.9484e-77.9048e-81.8281e-82.1860e-953.3149
ISO FRHHN6.5308e-77.6365e-82.2529e-87.4789e-94.0655e-98.8553e-78.3107e-86.9760e-91.3318e-953.3149
ISO FRHHE8.4069e-77.0285e-82.3419e-81.0172e-84.2904e-99.5895e-78.2680e-88.1321e-91.6268e-953.3149
STV GUHHZ5.6682e-76.6127e-82.7230e-88.0531e-93.8848e-91.2182e-61.1696e-77.5290e-91.5882e-962.8128
STV GUHHN7.1877e-78.2118e-82.5941e-81.3163e-81.1087e-81.1440e-61.0752e-71.4049e-82.6274e-962.8128
STV GUHHE5.4952e-76.6077e-82.6273e-88.0296e-94.1822e-91.1701e-61.0973e-76.4727e-91.3148e-962.8128
RSP GUHHZ4.5436e-75.1028e-82.1734e-89.9530e-94.1772e-97.2985e-76.8121e-86.8022e-99.6240e-1076.035
RSP GUHHN3.9961e-75.2401e-82.9722e-81.0282e-85.8754e-97.9080e-71.3954e-71.0421e-81.4161e-976.035
RSP GUHHE4.6969e-77.3447e-83.6566e-81.9578e-81.9863e-81.5844e-61.3137e-73.3466e-83.2531e-976.035
TURF FRHHZ2.2136e-73.7614e-81.9479e-81.2315e-82.4738e-84.5019e-71.0224e-75.1069e-83.2204e-987.9141
TURF FRHHN2.5632e-74.0124e-82.9481e-88.7063e-95.5878e-98.1193e-71.1518e-78.7234e-91.0523e-987.9141
TURF FRHHE2.1508e-73.3490e-82.3563e-81.4265e-85.5752e-94.4485e-71.1226e-79.7348e-98.1099e-1087.9141
SAOF FRHHZ1.1307e-72.5376e-81.7568e-87.7011e-94.4832e-92.4063e-71.5781e-76.9308e-98.2706e-1095.6135
SAOF FRHHN1.3288e-71.7957e-81.5820e-88.1472e-94.7080e-92.6735e-71.1529e-75.9197e-95.1347e-1095.6135
SAOF FRHHE1.2462e-71.8629e-81.3874e-87.7504e-95.5552e-92.1909e-79.0134e-88.2032e-95.5816e-1095.6135
*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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