MANUAL Location - Area: Alpi Cozie , magnitude (ML): 0.1
2026-09-23 22:34:51 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2026-09-24 07:11:27

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Earthquake info - Manual location
Event - ID :260923223359
Magnitude (ML) :0.1 +/- 0.2
Origin Time :2026-09-23 22:34:51.811 (UTC)
Location : Latitude: 44.617 N, Longitude: 7.197 E
Area :Alpi Cozie
Depth (km) :15.57
Distances (km) : 4.2 --- Sampeyre
6.8 --- Oncino
7.8 --- Frassino
8.6 --- Ostana
9.8 --- Crissolo
9.8 --- Paesana
10.1 --- Sanfront
10.5 --- Casteldelfino
11.3 --- Melle
12.0 --- Gambasca
12.0 --- Elva
12.6 --- Rifreddo
13.0 --- Macra
13.2 --- Martiniana Po
13.4 --- Pontechianale
13.4 --- Stroppo
13.9 --- Brossasco
14.2 --- Valmala
14.8 --- Bellino
14.9 --- Isasca

Quality location estimate: Erh: 0.8 km, Erz: 0.8 km, Nf: 22, Gap: 116 °, 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.
PZZGU2026-09-23 22:34:55.8300.0110-0.011.882026-09-23 22:34:57.7730.2957-0.950.4121.9
PONCIV2026-09-23 22:34:55.9140.02000.081.482026-09-23 22:34:58.1480.0400-0.550.8522.1
BHBGU2026-09-23 22:34:57.1100.0150-0.011.872026-09-23 22:35:00.0790.0942-0.680.7229.6
VINDIV2026-09-23 22:34:58.4810.0200-0.051.612026-09-23 22:35:02.6790.0400-0.600.8137.6
STVGU2026-09-23 22:34:59.7830.02000.021.722026-09-23 22:35:04.8180.0400-0.530.7845.6
RRLGU2026-09-23 22:35:00.8300.03910.081.432026-09-23 22:35:06.3800.1554-0.630.7049.9
FENEIV2026-09-23 22:35:00.7270.0200-0.140.982026-09-23 22:35:05.9380.0400-1.160.1550.0
ISOFR2026-09-23 22:35:01.7720.02000.690.002026-09-23 22:35:07.2400.2246-0.240.9452.2
OGAGFR2026-09-23 22:35:02.2650.0200-0.011.572026-09-23 22:35:09.1780.0400-0.490.7557.8
GBOSGU2026-09-23 22:35:03.3240.02000.121.112026-09-23 22:35:10.7200.2005-0.610.6967.9
ROROGU2026-09-23 22:35:06.8070.02000.011.322026-09-23 22:35:16.2000.4919-1.360.2390.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
PZZ GUHH0.145.28e-221.9208
BHB GUHH-0.011.13e-229.612
STV GUHH0.145.12e-345.6166
RRL GUHH0.367.19e-349.9317
FENE IVHH0.115.83e-350.0347
ISO FRHH-0.113.23e-352.2194
OGAG FRHH0.063.90e-357.8290
RORO GUHH0.413.30e-390.4129


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 GUHHZ1.0061e-58.8032e-73.9341e-79.1376e-85.1334e-89.6057e-62.2461e-68.8562e-81.6726e-821.9208
PZZ GUHHN9.2487e-68.5027e-73.3721e-77.6492e-84.7698e-81.4521e-51.1321e-69.4791e-81.9054e-821.9208
PZZ GUHHE7.5038e-68.5945e-74.5570e-71.0497e-75.3450e-81.4164e-52.4322e-69.9670e-82.0613e-821.9208
PONC IVHHZ4.6010e-52.4252e-63.1110e-71.2206e-76.9588e-81.0180e-51.5503e-61.7375e-75.1309e-822.1275
PONC IVHHN3.3213e-53.0324e-66.9955e-72.5419e-71.5789e-73.9373e-52.7376e-62.8524e-76.6464e-822.1275
PONC IVHHE1.7498e-51.8019e-62.6043e-71.0917e-76.3817e-81.0402e-51.5255e-61.3770e-73.2567e-822.1275
BHB GUHHZ2.5506e-62.9063e-71.1325e-72.9366e-81.4582e-85.5484e-65.3758e-72.5541e-86.0672e-929.612
BHB GUHHN2.0160e-62.0531e-71.0449e-72.6020e-81.4361e-84.0567e-63.8106e-72.3214e-84.9103e-929.612
BHB GUHHE2.5704e-62.9853e-79.3843e-83.3330e-81.6041e-84.6783e-63.7009e-72.6890e-84.7253e-929.612
STV GUHHZ7.5385e-79.3678e-84.3208e-81.0601e-86.3295e-91.3726e-62.0760e-79.1130e-91.6392e-945.6166
STV GUHHN1.0663e-61.0899e-73.7009e-81.0259e-85.7810e-91.0546e-61.3909e-71.2450e-82.3490e-945.6166
STV GUHHE8.3661e-71.2289e-74.1131e-81.3584e-87.0987e-92.5118e-61.5934e-71.2435e-82.6264e-945.6166
RRL GUHHZ5.3757e-76.4525e-83.2191e-81.5456e-86.8761e-99.9243e-71.5341e-78.7020e-91.5733e-949.9317
RRL GUHHN8.0904e-71.2455e-76.0715e-81.4615e-89.0191e-93.6820e-61.8015e-71.3382e-82.9090e-949.9317
RRL GUHHE8.8374e-71.4044e-75.9038e-81.7845e-89.3250e-93.6085e-62.1477e-71.4439e-83.6838e-949.9317
FENE IVHHZ1.4134e-61.6731e-76.1628e-81.6395e-88.8476e-93.4380e-62.2563e-71.3762e-83.7127e-950.0347
FENE IVHHN1.2259e-61.4410e-75.3806e-81.2538e-87.1354e-92.2371e-62.9571e-71.2840e-82.4680e-950.0347
FENE IVHHE1.1682e-61.1943e-75.0572e-81.6668e-88.7405e-91.6693e-62.4874e-71.2684e-82.6955e-950.0347
ISO FRHHZ4.7911e-76.5330e-82.6576e-81.4615e-81.3108e-81.1665e-61.2948e-72.2376e-82.5073e-952.2194
ISO FRHHN5.3472e-75.2844e-81.7034e-86.6363e-93.8241e-97.6474e-77.6768e-86.6445e-91.2360e-952.2194
ISO FRHHE6.1384e-78.2498e-82.7672e-88.4248e-95.0903e-91.4211e-67.4052e-81.1059e-81.6409e-952.2194
OGAG FRHHZ1.8683e-73.3499e-82.4687e-81.3607e-84.8655e-95.4411e-71.1769e-76.8360e-97.8785e-1057.8290
OGAG FRHHN1.9759e-73.3298e-82.7301e-81.8150e-89.9359e-96.0894e-71.8523e-71.1837e-81.0671e-957.8290
OGAG FRHHE2.0082e-74.1455e-82.9510e-82.3015e-81.2762e-84.5721e-71.5590e-71.7197e-81.2947e-957.8290
GBOS GUHHZ1.2943e-62.3336e-71.7304e-75.6129e-82.5139e-85.7074e-68.5095e-73.0757e-86.1339e-967.9129
GBOS GUHHN1.2390e-61.8450e-71.2253e-73.4359e-82.1817e-81.9707e-66.7041e-73.3863e-84.5420e-967.9129
GBOS GUHHE8.5245e-71.8071e-79.4466e-84.5173e-82.2502e-82.4828e-64.4049e-72.7264e-84.0046e-967.9129
RORO GUHHZ3.6334e-75.2042e-81.8103e-88.1072e-95.9081e-97.1233e-77.5851e-88.3764e-91.0178e-990.4129
RORO GUHHN2.2744e-75.1091e-82.7181e-88.1008e-96.7223e-96.3125e-71.1898e-79.1786e-91.3460e-990.4129
RORO GUHHE3.8378e-75.4498e-82.5376e-81.0095e-86.9564e-91.1534e-68.2721e-88.7177e-91.3403e-990.4129
*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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