MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.5
2025-09-11 09:05:10 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-11 11:56:58

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Earthquake info - Manual location
Event - ID :250911090422
Magnitude (ML) :0.5 +/- 0.2
Origin Time :2025-09-11 09:05:10.042 (UTC)
Location : Latitude: 44.707 N, Longitude: 6.709 E
Area :Alpi Cozie
Depth (km) :0.99
Distances (km) : 26.1 --- Claviere
26.9 --- Pontechianale
28.0 --- Bellino
28.2 --- Cesana Torinese
28.6 --- Sauze di Cesana
31.0 --- Sestriere
31.3 --- Casteldelfino
33.6 --- Prali
33.9 --- Acceglio
34.2 --- Bobbio Pellice
35.3 --- Elva
35.4 --- Crissolo
36.9 --- Prazzo
37.0 --- Villar Pellice
37.5 --- Salza di Pinerolo
37.6 --- Sauze d Oulx
37.6 --- Oulx
37.9 --- Ostana
38.1 --- Oncino
38.6 --- Pragelato

Quality location estimate: Erh: 0.6 km, Erz: 0.5 km, Nf: 16, Gap: 140 °, Rms: 0.11


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.
OGAGFR2025-09-11 09:05:13.5100.0080-0.021.442025-09-11 09:05:15.9200.0471-0.001.4316.3
RRLGU2025-09-11 09:05:15.5800.01300.160.912025-09-11 09:05:19.0600.07520.041.3124.8
SURFFR2025-09-11 09:05:15.5700.01800.051.392025-09-11 09:05:19.3690.0400-0.081.1626.5
PZZGU2025-09-11 09:05:18.1000.02010.220.742025-09-11 09:05:23.1950.0400-0.210.6539.2
BHBGU2025-09-11 09:05:19.2090.0200-0.091.112025-09-11 09:05:25.5100.1404-0.001.0346.0
ISOFR2025-09-11 09:05:22.2690.02000.051.282025-09-11 09:05:30.2920.0400-0.310.4664.1
RSPGU2025-09-11 09:05:22.5400.02000.021.282025-09-11 09:05:31.1370.04000.041.0265.8
ENRGU2025-09-11 09:05:24.3890.02000.360.392025-09-11 09:05:34.2590.04000.420.4277.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
OGAG FRHH0.933.23e-116.3304
RRL GUHH0.352.71e-224.815
PZZ GUHH0.534.25e-239.2125
BHB GUHH0.391.22e-246.072
ISO FRHH0.345.95e-364.1155
RSP GUHH0.478.08e-365.842


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 FRHHZ7.8902e-62.4266e-61.5499e-66.4344e-74.0006e-71.3299e-57.2887e-65.6622e-77.2175e-816.3304
OGAG FRHHN1.6498e-53.4218e-61.9995e-65.0479e-72.8333e-73.4029e-58.7954e-64.6470e-78.5334e-816.3304
OGAG FRHHE1.0753e-53.5245e-62.6693e-61.1889e-64.7394e-71.6153e-51.5817e-56.2155e-79.2588e-816.3304
RRL GUHHZ2.4710e-62.1043e-78.6502e-83.4145e-82.2663e-82.5771e-64.9603e-73.0653e-84.4540e-924.815
RRL GUHHN1.5864e-62.7227e-72.0412e-79.2444e-83.9963e-83.2638e-67.0736e-75.6559e-87.7013e-924.815
RRL GUHHE2.3573e-64.0074e-72.1878e-79.7513e-83.6452e-86.3782e-61.0060e-66.1978e-89.8574e-924.815
PZZ GUHHZ3.8462e-66.1350e-73.5554e-71.0206e-76.0275e-81.0789e-51.6633e-61.0141e-71.4001e-839.2125
PZZ GUHHN4.2824e-67.2701e-74.2810e-71.2480e-75.9501e-89.7364e-62.0965e-68.6837e-81.4376e-839.2125
PZZ GUHHE2.9907e-66.2372e-73.9731e-71.0845e-75.7447e-81.0971e-52.1336e-67.8167e-81.3313e-839.2125
BHB GUHHZ1.5648e-62.6895e-71.2941e-74.5204e-82.2380e-85.1170e-63.6837e-73.5086e-86.5647e-946.072
BHB GUHHN1.5573e-61.8597e-71.1841e-74.3779e-82.0068e-83.7180e-64.8787e-73.3134e-84.0492e-946.072
BHB GUHHE1.4447e-61.7214e-79.4181e-84.3400e-81.8377e-83.6445e-63.2839e-72.4643e-83.6046e-946.072
ISO FRHHZ6.2393e-77.5737e-84.3924e-81.6261e-81.3140e-81.3867e-61.7235e-71.9611e-82.0517e-964.1155
ISO FRHHN6.2193e-77.9513e-83.7065e-81.2900e-81.0009e-81.4966e-61.4897e-71.7457e-82.1831e-964.1155
ISO FRHHE7.3277e-79.1783e-83.9179e-82.0255e-81.1722e-81.3138e-61.2963e-71.4026e-82.2787e-964.1155
RSP GUHHZ6.5043e-78.0745e-84.9621e-82.8970e-81.3573e-81.3727e-62.0392e-71.8126e-82.4103e-965.842
RSP GUHHN8.4778e-71.3218e-77.2162e-83.2924e-81.6170e-82.7299e-63.0089e-72.0897e-82.7791e-965.842
RSP GUHHE8.7948e-71.1009e-78.0519e-83.5183e-81.7314e-82.6157e-63.1035e-72.2986e-82.7833e-965.842
ENR GUHHZ1.6423e-62.1896e-71.1374e-74.1616e-82.5236e-84.4017e-64.3388e-74.0780e-85.5225e-977.4133
ENR GUHHN3.2161e-63.9832e-72.1253e-77.8079e-84.4104e-87.8509e-61.1244e-66.5518e-88.7447e-977.4133
ENR GUHHE3.8461e-65.1071e-72.3867e-77.2145e-84.0328e-86.6070e-61.2534e-65.8906e-89.4601e-977.4133
*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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