MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.6
2025-09-29 04:09:50 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-29 07:08:59

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Earthquake info - Manual location
Event - ID :250929040901
Magnitude (ML) :0.6 +/- 0.2
Origin Time :2025-09-29 04:09:50.634 (UTC)
Location : Latitude: 44.982 N, Longitude: 6.738 E
Area :Alpi Cozie
Depth (km) :9.95
Distances (km) : 4.7 --- Claviere
5.4 --- Cesana Torinese
9.5 --- Oulx
10.7 --- Sauze di Cesana
10.9 --- Sauze d Oulx
11.2 --- Bardonecchia
11.4 --- Sestriere
15.5 --- Salbertrand
16.3 --- Pragelato
19.9 --- Exilles
24.1 --- Usseaux
24.9 --- Chiomonte
25.1 --- Salza di Pinerolo
25.2 --- Massello
25.5 --- Fenestrelle
26.4 --- Prali
27.3 --- Gravere
28.0 --- Giaglione
29.1 --- Venaus
30.0 --- Mompantero

Quality location estimate: Erh: 1.7 km, Erz: 1 km, Nf: 16, Gap: 174 °, 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.
RRLGU2025-09-29 04:09:53.6600.0080-0.021.462025-09-29 04:09:55.9100.03900.131.5714.5
OGAGFR2025-09-29 04:09:54.8420.0200-1.360.142025-09-29 04:09:58.4400.3457-1.720.1428.9
BHBGU2025-09-29 04:09:59.7100.04920.340.702025-09-29 04:10:05.4300.13840.031.3345.7
RSPGU2025-09-29 04:09:59.4100.0251-0.011.542025-09-29 04:10:05.3800.1394-0.121.0246.7
SURFFR2025-09-29 04:10:01.2700.03010.161.532025-09-29 04:10:08.8400.17350.061.2156.8
PZZGU2025-09-29 04:10:01.8400.03310.051.632025-09-29 04:10:09.7600.1875-0.091.0161.7
LSDGU2025-09-29 04:10:01.4600.0311-0.640.052025-09-29 04:10:08.3500.1865-1.610.1662.7
LATOIV2025-09-29 04:10:02.9410.02000.221.292025-09-29 04:10:11.3260.04000.201.2367.7


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
RRL GUHH0.812.09e-114.5149
OGAG FRHH0.151.90e-228.9216
BHB GUHH0.712.58e-245.7111
RSP GUHH0.572.10e-246.766
PZZ GUHH0.692.47e-261.7150
LSD GUHH0.801.81e-262.730


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.
(°)
RRL GUHHZ5.7757e-61.1387e-67.8440e-74.3577e-72.3304e-71.5950e-54.2482e-62.9782e-73.7288e-814.5149
RRL GUHHN1.2563e-52.9247e-61.4328e-64.3279e-72.0541e-73.5298e-56.3020e-63.3393e-76.9265e-814.5149
RRL GUHHE9.1033e-62.8986e-61.5533e-67.8449e-73.1744e-72.9566e-56.4533e-64.8063e-77.1344e-814.5149
OGAG FRHHZ1.3747e-62.3255e-71.5630e-75.4699e-82.6733e-87.1826e-66.3733e-73.9094e-85.8483e-928.9216
OGAG FRHHN1.6319e-63.3888e-72.0737e-76.1046e-82.9349e-85.9878e-68.4774e-74.8874e-87.1931e-928.9216
OGAG FRHHE1.4968e-62.5124e-71.6807e-78.7732e-84.8348e-83.9461e-68.2109e-77.0475e-87.7883e-928.9216
BHB GUHHZ2.3487e-63.8529e-72.6679e-77.9257e-83.9790e-88.6958e-61.5267e-67.7183e-89.9893e-945.7111
BHB GUHHN2.6192e-63.7410e-72.7177e-76.6026e-83.5207e-89.2398e-61.1252e-66.6233e-89.2164e-945.7111
BHB GUHHE2.9164e-65.6457e-71.7936e-76.1823e-83.4157e-81.1785e-56.9937e-77.7866e-81.2347e-845.7111
RSP GUHHZ1.8710e-62.0959e-77.9934e-83.2710e-81.3536e-82.9061e-62.4235e-72.2088e-83.9063e-946.766
RSP GUHHN2.2324e-62.5957e-71.2164e-73.3834e-81.9950e-85.4331e-63.5589e-73.4123e-86.3941e-946.766
RSP GUHHE2.5438e-64.2097e-72.0073e-74.3944e-82.5808e-88.2106e-65.1722e-74.4814e-88.6509e-946.766
PZZ GUHHZ1.8789e-62.9461e-71.9030e-75.1619e-82.7070e-85.8572e-67.8249e-74.2506e-85.9646e-961.7150
PZZ GUHHN1.5487e-63.3880e-72.0405e-75.9189e-83.5286e-84.0415e-69.3002e-75.0884e-86.8916e-961.7150
PZZ GUHHE1.5311e-62.6689e-72.5575e-77.1077e-83.7169e-83.5302e-61.4850e-65.4375e-88.0401e-961.7150
LSD GUHHZ1.7535e-62.3056e-71.2393e-74.5506e-82.0315e-83.1693e-67.8464e-73.0139e-85.2703e-962.730
LSD GUHHN2.3572e-62.5730e-71.2677e-74.7427e-82.1919e-85.9388e-64.4567e-73.2935e-85.1469e-962.730
LSD GUHHE2.3095e-63.0946e-71.7515e-74.9567e-82.8899e-83.7540e-61.1056e-63.9476e-86.3641e-962.730
*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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