MANUAL Location - Area: Alpi Marittime , magnitude (ML): 0.2
2025-09-28 01:06:47 (UTC)

Regional Seismic Network of Northwestern Italy (Distav, University of Genoa)
Posted on: 2025-09-29 06:55:30

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Earthquake info - Manual location
Event - ID :250928010622
Magnitude (ML) :0.2 +/- 0.2
Origin Time :2025-09-28 01:06:47.435 (UTC)
Location : Latitude: 44.299 N, Longitude: 7.398 E
Area :Alpi Marittime
Depth (km) :14.52
Distances (km) : 2.2 --- Valdieri
2.6 --- Moiola
4.3 --- Gaiola
4.9 --- Valloriate
5.5 --- Roaschia
5.9 --- Roccasparvera
5.9 --- Rittana
6.4 --- Entracque
6.9 --- Roccavione
8.1 --- Borgo San Dalmazzo
8.3 --- Demonte
9.0 --- Vignolo
9.1 --- Robilante
10.2 --- Bernezzo
11.0 --- Cervasca
12.4 --- Vernante
12.7 --- Boves
12.7 --- Valgrana
13.5 --- Caraglio
13.7 --- Monterosso Grana

Quality location estimate: Erh: 0.8 km, Erz: 0.3 km, Nf: 32, Gap: 110 °, Rms: 0.37


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.
STVGU2025-09-28 01:06:51.2460.00400.511.422025-09-28 01:06:53.0030.04310.001.5417.5
ENRGU2025-09-28 01:06:51.2400.00300.521.422025-09-28 01:06:52.9790.0370-0.021.5617.5
VINDIV2025-09-28 01:06:51.7360.02000.011.572025-09-28 01:06:54.2190.0400-0.450.4522.9
ISOFR2025-09-28 01:06:54.8200.01301.120.012025-09-28 01:06:58.5100.10020.541.0134.2
PZZGU2025-09-28 01:06:54.6240.02000.491.292025-09-28 01:06:58.8080.0400-0.091.3235.9
TURFFR2025-09-28 01:06:55.4280.02000.650.752025-09-28 01:06:59.8530.1283-0.151.1238.8
GBOSGU2025-09-28 01:06:54.9440.02000.491.272025-09-28 01:06:59.3230.04000.091.0938.9
SAOFFR2025-09-28 01:06:55.3910.06020.491.182025-09-28 01:06:59.8640.1083-0.280.8839.8
MLIGIV2025-09-28 01:06:55.7460.02000.011.472025-09-28 01:07:00.6110.0400-1.040.0343.8
MGROGU2025-09-28 01:06:56.1120.02000.101.042025-09-28 01:07:01.3960.0400-0.700.1646.3
MVIFFR2025-09-28 01:06:57.5330.02000.561.162025-09-28 01:07:03.6400.1524-0.230.9650.9
SURFFR2025-09-28 01:06:57.4290.02000.360.662025-09-28 01:07:03.9610.04000.001.2052.7
ESCAFR2025-09-28 01:06:57.9180.02000.601.022025-09-28 01:07:04.0440.0400-0.211.0354.1
ROROGU2025-09-28 01:06:57.6790.0200-0.230.952025-09-28 01:07:05.1300.1655-0.031.0959.0
IMIGU2025-09-28 01:06:58.0410.0200-0.051.402025-09-28 01:07:05.3960.1002-0.280.9060.5
BHBGU2025-09-28 01:06:58.7700.02000.830.202025-09-28 01:07:05.0200.0400-0.310.8362.4


Local magnitude (ML) calculation results
Station Net Channels Stat. Mag. Wood-And.
Ampl.
Dist. (km) Azimuth
STV GUHH0.507.29e-217.5224
ENR GUHH0.551.65e-117.5168
PZZ GUHH-0.189.95e-335.9316
TURF FRHH0.048.32e-338.8181
GBOS GUHH0.328.10e-338.9100
MGRO GUHH0.045.88e-346.3131
ESCA FRHH0.328.13e-354.1182
RORO GUHH0.215.30e-359.0111
IMI GUHH0.338.93e-360.5137


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.
(°)
STV GUHHZ9.8646e-69.9589e-72.1247e-77.0086e-83.6671e-86.1148e-69.2958e-77.9925e-82.0327e-817.5224
STV GUHHN2.2088e-52.2085e-64.4199e-71.7479e-71.1056e-72.1569e-51.7894e-62.2202e-74.6802e-817.5224
STV GUHHE1.3434e-51.3185e-63.5141e-71.2504e-77.8555e-81.5033e-51.2554e-61.4793e-72.9419e-817.5224
ENR GUHHZ1.8455e-51.1842e-62.3385e-76.7517e-83.8320e-81.0384e-59.9488e-77.8813e-82.2494e-817.5168
ENR GUHHN6.4805e-54.3528e-66.4822e-72.0478e-71.2482e-74.0708e-52.2809e-62.6789e-78.3089e-817.5168
ENR GUHHE8.5906e-57.8707e-67.1139e-72.7222e-71.7328e-73.6386e-53.1840e-64.6633e-71.1528e-717.5168
ISO FRHHZ1.1207e-61.0357e-72.4025e-87.0010e-94.8662e-98.6417e-77.2318e-87.1889e-91.1480e-934.2245
ISO FRHHN7.7385e-76.9437e-82.3090e-87.6942e-95.0802e-99.6615e-79.9196e-88.1809e-91.3273e-934.2245
ISO FRHHE6.5386e-76.9174e-82.2610e-87.7362e-94.5621e-98.4457e-71.0490e-76.8470e-91.3192e-934.2245
PZZ GUHHZ8.5839e-71.2084e-77.8206e-82.3583e-81.5565e-81.5764e-62.6706e-72.7098e-82.8530e-935.9316
PZZ GUHHN1.2290e-61.3625e-79.3848e-82.8969e-81.7369e-82.2693e-63.6671e-72.2018e-83.4467e-935.9316
PZZ GUHHE7.8009e-71.6370e-79.1872e-82.7474e-81.4954e-82.7917e-63.2843e-72.3094e-83.5172e-935.9316
TURF FRHHZ6.0408e-75.6748e-83.3112e-81.4071e-81.0289e-89.7403e-71.7072e-71.4370e-81.2584e-938.8181
TURF FRHHN8.6468e-71.1319e-76.9669e-82.1819e-81.2093e-81.7658e-63.4390e-71.8507e-82.7683e-938.8181
TURF FRHHE5.9511e-71.1304e-76.5708e-82.1992e-81.0653e-81.6802e-63.7556e-71.5211e-82.5537e-938.8181
GBOS GUHHZ8.3394e-71.1272e-75.1513e-81.6359e-89.0963e-92.4705e-61.7040e-71.3900e-82.7368e-938.9100
GBOS GUHHN1.0005e-61.0685e-75.4338e-82.4127e-81.0964e-81.5282e-63.0168e-71.6871e-83.1504e-938.9100
GBOS GUHHE1.0575e-61.5407e-76.0213e-82.0230e-81.0543e-82.8259e-61.9586e-71.6690e-82.7428e-938.9100
SAOF FRHHZ4.7673e-77.8893e-83.5893e-81.2643e-88.2894e-98.8858e-72.2220e-71.3559e-81.5776e-939.8160
SAOF FRHHN5.2670e-77.6808e-84.5068e-81.4293e-88.8556e-98.7741e-71.3915e-71.5523e-81.9628e-939.8160
SAOF FRHHE6.9702e-77.8244e-82.9724e-81.6568e-81.5139e-87.9569e-71.6845e-72.2355e-81.5585e-939.8160
MGRO GUHHZ5.1013e-75.1778e-82.7908e-81.8029e-89.1456e-96.3372e-71.9755e-71.0894e-81.1843e-946.3131
MGRO GUHHN5.6550e-76.7492e-83.9099e-82.4808e-81.7216e-81.1461e-61.7486e-72.2665e-81.6939e-946.3131
MGRO GUHHE5.3875e-78.0321e-84.2604e-82.0774e-81.7225e-87.1727e-72.5188e-72.1638e-82.3242e-946.3131
ESCA FRHHZ3.5558e-75.0796e-82.6414e-81.1879e-87.6692e-98.6313e-71.5844e-71.3171e-81.1410e-954.1182
ESCA FRHHN7.3371e-71.2665e-74.3935e-81.7179e-88.6884e-91.8027e-62.0051e-71.0977e-82.5984e-954.1182
ESCA FRHHE5.6560e-79.8261e-86.2509e-83.7564e-83.5576e-81.2635e-63.5024e-75.7803e-83.8425e-954.1182
RORO GUHHZ5.3481e-76.0843e-82.8821e-81.2277e-88.7845e-91.2628e-61.4207e-71.3854e-81.4163e-959.0111
RORO GUHHN7.6975e-77.0623e-83.9987e-82.3625e-83.2164e-89.3929e-72.0338e-74.7310e-84.5409e-959.0111
RORO GUHHE4.9859e-76.6522e-82.8537e-89.9359e-98.1647e-97.7277e-71.2743e-79.2421e-91.4382e-959.0111
IMI GUHHZ5.5264e-76.8976e-82.6808e-84.4747e-87.6298e-81.0526e-61.3161e-71.2123e-78.6070e-960.5137
IMI GUHHN1.8922e-61.9195e-76.6879e-83.2316e-82.2530e-82.4318e-62.4860e-73.4464e-84.2631e-960.5137
IMI GUHHE7.4179e-79.6945e-84.3765e-82.1401e-81.6785e-81.4576e-61.5171e-72.6912e-82.0154e-960.5137
BHB GUHHZ3.1084e-74.4949e-81.5678e-86.3506e-94.2465e-97.5505e-75.6050e-85.6142e-91.0446e-962.4350
BHB GUHHN2.5684e-74.4683e-82.0962e-87.0087e-94.2759e-97.0281e-71.0292e-77.1563e-99.0623e-1062.4350
BHB GUHHE3.8441e-74.2934e-81.6939e-87.6812e-94.6136e-97.2708e-76.2581e-86.0464e-98.6874e-1062.4350
*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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